Simplified Tools

Tools

1069 tools

List of available tools
Blue-Green Deployment Planner Plan a blue-green release with traffic waves, bake windows, capacity checks, rollback triggers, command drafts, and an exposure curve for review.
CSS Border Radius Generator Generate border-radius CSS from corner values, slash syntax, and preview dimensions with fit warnings, Tailwind output, and copy-ready code.
CSS Box Shadow Generator Build a CSS box-shadow stack with editable layers, live surface previews, CSS/SCSS output, and a ledger for checking each shadow.
CSS Flexbox Generator Generate flexbox CSS for responsive rows, columns, wrapping, gaps, and child sizing with a live preview, property notes, and starter HTML.
CSS Grid Generator Generate CSS Grid layout rules from a selector, strategy, gaps, and alignment, with a live preview, fit projections, scaffold, and audit ledgers.
Canary Deployment Planner Plan a canary rollout from traffic steps, bake windows, guardrail limits, and rollback posture with schedule, risk, chart, and export outputs.
JSON Schema Generator Generate a draft-aware JSON Schema from sample JSON in your browser, with required-field choices, nullable handling, and review ledgers.
NTP Config Generator Build NTP configs for chrony, ntpd, systemd-timesyncd, and Cisco devices with source parsing, access checks, fallback warnings, and copy-ready output.
OpenTelemetry Collector Config Generator Generate OpenTelemetry Collector YAML for OTLP traces, metrics, and logs with pipeline audits, memory guards, batch settings, and endpoint checks.
README Generator Draft a README from project details, setup commands, usage examples, and license choices with readiness checks and follow-up repository tasks.
Route Table Longest Match Checker Check which IPv4 or IPv6 route wins for a destination, with longest-prefix ranking, equal-prefix policy choices, and host-bit warnings.
Secrets Rotation Planner Plan a secret rotation without pasting the credential, with staged cutover timing, validation gates, risk scoring, and change-record exports.
Sitemap XML Generator Generate sitemap XML from same-host URLs or paths, with lastmod handling, crawl-hint controls, dedupe review, and protocol limit checks.
Test Data Generator Generate repeatable synthetic test rows from field recipes and seeds, then export CSV, JSON, NDJSON, or SQL with recipe quality checks.
Web App Manifest Generator Generate a web app manifest with install markup, icon asset checks, and warnings for launch scope, display mode, colors, and shortcuts.
.env File Generator Turn key-value rows into reviewed .env and .env.example files with quote safety checks, duplicate-key warnings, and masked secret previews.
.gitignore Generator Draft a repository-ready .gitignore from stack, OS, editor, secret, and exception choices, with warnings for broad or duplicate patterns.
.gitignore Pattern Coverage Checker Check whether .gitignore rules protect generated or sensitive paths, with in-browser coverage metrics for negations, tracked files, and gaps.
.htaccess Generator Generate an Apache .htaccess draft from presets and ordered rule sections, then review warnings, counts, and saved JSON before staging changes.
16-Factor Personality Profile Assessment Take a 163-item IPIP-style 16-factor profile, see factor means and pole leans, and avoid mistaking it for an official 16PF report.
3D Print Volumetric Flow Calculator Calculate FDM volumetric flow from layer height, line width, speed, and flow multiplier, then compare demand with calibrated hotend caps.
7 Wonders Score Calculator Score a finished 7 Wonders game, convert remaining coins, resolve treasury tie-breaks, and audit each city's category totals and rank.
7-Minute Workout Timer Run a 7-minute workout timer with preset 12-move circuits, interval sliders, browser cues, plan metrics, a load chart, and JSON export.
ACL Wildcard Mask Calculator Calculate IPv4 ACL wildcard masks from CIDR, subnet, host, or any entries, then review ACE lines, match size, overlaps, and broad matches.
ACME DNS Challenge Readiness Check Check ACME DNS-01 readiness with TXT token matching, CNAME or NS delegation checks, resolver comparison, and cache-aware retry guidance.
ACME HTTP 01 Readiness Validator Check ACME HTTP-01 retry readiness with route, redirect, body-match, IPv6, cache, CDN/WAF, and backend consistency evidence for retries.
ACS Mini Attachment Style Snapshot (Proxy) Reflect on one adult attachment pattern with an original 16-item proxy, four style totals, profile-balance notes, and cue rows.
AMRAP Workout Timer Plan and run a time-capped AMRAP workout with parsed movement loops, target pace checks, live score logging, charts, and exportable session records.
API Error Budget Analyzer Measure API error-budget burn from status counts or access-log snippets, with SLO projections, status-code policy checks, and burn guardrails.
API Gateway Cost Calculator Estimate API Gateway monthly spend across HTTP, REST, Private REST, and WebSocket traffic with request chunks, transfer, cache, and budget checks.
API Key Generator Generate API keys in your browser with public IDs, entropy checks, check segments, storage hashes, and sensitive-batch warnings.
API Pagination Window Calculator Plan an API pagination window from item count, page size, rate limits, latency, workers, retry reserve, and payload risk checks.
APR Calculator Compare loan offers by modeling APR from net proceeds, upfront finance charges, payment timing, final installments, and note-rate spread.
AWS Lambda Cost Calculator Estimate AWS Lambda monthly cost from requests, billed duration, memory, provisioned windows, streaming overage, free tier, and editable rates.
Acceptance Criteria Generator Draft acceptance criteria from a story, actor, outcomes, behaviors, and edge cases with Gherkin, review checks, and exportable ledgers.
Accessibility Ramp Slope Calculator Plan or check an accessibility ramp from rise and run, then review slope, landings, width, handrails, edge protection, and material estimates.
Ad Network Detector Check a public page for ad-network tags, ads.txt seller alignment, confidence scores, fetch warnings, charts, and prioritized follow-up actions.
Adult ADHD Self-Report Scale (ASRS v1.1) 6-Question Screener Screen adult ADHD symptoms with the ASRS v1.1 six-item screener, comparing classic shaded count and 24-point cutoffs with follow-up notes.
Age Calculator Calculate age from birth and as-of dates with calendar wording, elapsed totals, leap-day rules, birthday countdowns, and milestone planning.
Air Compressor CFM Calculator Size an air compressor by SCFM, PSI, trigger time, duty rating, tank buffer, and reserve so tool demand and candidate headroom are clear.
Air Purifier CADR Calculator Size an air purifier from room volume and ACH, then compare label CADR, quiet-speed cushion, unit count, and coverage fit for particle removal.
Aircraft Weight Balance Calculator Build an aircraft weight-and-balance worksheet with fuel burn, station arms, CG envelope checks, and phase-by-phase limit warnings.
Airport Code Lookup Find IATA and ICAO airport codes by code, city, country, or airport name, with match evidence, source checks, and nearby coordinate context.
Alcohol Screener Comparator Compare AUDIT-C, AUDIT-10, and CAGE with route scores, cutoff context, coverage charts, and follow-up notes before an alcohol review.
Alcohol Use Disorders Identification Test (AUDIT-10) Score the 10-item AUDIT alcohol screen, see WHO risk zones, domain patterns, priority cues, and follow-up notes for safer review.
Alcohol Use Disorders Identification Test (AUDIT-C) Score AUDIT-C alcohol screening answers, compare 3+, 4+, VA/DoD 5+, and 8+ reference lines, and review the strongest item cue.
Alert Noise Rate Calculator Calculate alert noise from classified CSV rows, compare routes with your target, and spot repeat groups, ack delays, and cleanup gaps.
Alphabet Matching Sheet Generator Create alphabet matching worksheets from letter sets and cue words, with repeatable shuffles, challenge distractors, answer keys, and print exports.
Alternative DCV Checker Check alternative DCV proofs before a certificate order retry, comparing DNS, CNAME, HTTP, HTTPS, CSR hashes, tokens, and resolver evidence.
Anger & Irritability Proxy Check Review anger and irritability over the past 2 weeks with an 8-item browser-local proxy, domain scores, high-item cues, and charts.
Ansible Inventory Generator Generate a static Ansible INI inventory from host rows, group variables, and parent groups, with validation warnings and a host ledger.
Apache Virtual Host Generator Generate an Apache vhost draft for static, PHP-FPM, or proxy sites, with TLS settings, required modules, warnings, and activation checks.
Appliance Energy Cost Calculator Estimate one appliance's monthly and annual running cost from watts, amps, annual kWh, runtime, standby draw, rates, and usage checks.
Application Log Pattern Analyzer Analyze application log excerpts in your browser, group repeated failure patterns, and review severity counts, time buckets, and triage rows.
Application Programming Interface (API) Testing Tool Test an HTTP API directly from your browser, import cURL commands, inspect CORS-blocked failures, and save clean response traces.
Aquarium Screensaver Simulator Simulate a browser aquarium screensaver with live fish, bubbles, lighting, fullscreen preview, FPS metrics, and director cues for calmer display loops.
Aquarium Stocking Capacity Calculator Plan a freshwater stocking list from adult fish size, tank footprint, filtration, water changes, swim zones, and compatibility warnings.
Aquarium Substrate Amount Calculator Estimate aquarium substrate from tank footprint, sloped depths, density, and bag size, then plan reserve, cost, displacement, and leftovers.
Area Code Lookup Look up NANP area codes by code, phone number, or place, with status, overlay, dialing-plan, time-zone, and caller-location caveats.
Arithmetic Practice Generator Generate arithmetic practice sheets from operation mixes, number ranges, and replay seeds, with printable pages, answer keys, setup notes, and exports.
AsciiMath Editor Edit AsciiMath with a live equation preview, conversion audit, function counts, and reusable LaTeX, MathML, image, PDF, and data outputs.
Attendance Rate Calculator Calculate attendance rate from present days or absences, then test targets, recovery days, future absence cushion, and scenario projections.
Attendance Sheet Generator Build printable attendance sheets from roster text or CSV, with date/session columns, duplicate-name warnings, and downloadable handoff files.
Attenuator Pad Calculator Design a matched Pi or T attenuator pad, compare exact and preferred resistor values, and check power dissipation before choosing parts.
Attic Ventilation Calculator Size attic ventilation from floor area, split intake and exhaust NFA, and turn product ratings into ridge, soffit, roof, or gable vent counts.
Audio File Size Calculator Estimate audio storage from PCM settings or encoded bitrate, with multitrack counts, media-fit checks, duration curves, and exports.
Audit Log Anomalies Analyzer Analyze audit log exports in your browser, ranking failure bursts, privilege changes, source shifts, and after-hours activity with evidence.
Autonomous System Number (ASN) Information Lookup Look up an ASN or public IP, then compare routing visibility, prefixes, RDAP contacts, and PeeringDB clues in one focused report.
Avro Schema Compatibility Validator Compare released and proposed Avro schemas by compatibility mode, with field-level blockers, alias/default checks, and registry-ready notes.
BFI-2-S Aligned Proxy Assessment Score a 30-item BFI-2-S-aligned IPIP proxy, compare five domain means, and treat two-item facet pairs as directional clues, not norms.
BFI-44 Style Big Five Proxy Assessment Build a 44-item Big Five proxy profile with trait means, cluster support gaps, answer review, and clear non-normed interpretation limits.
BGP AS Path Policy Checker Check pasted BGP AS paths for wrong origins, blocked ASNs, regex misses, long paths, and prepend watch findings before policy changes.
BGP Prefix List Generator Generate BGP prefix-list configuration from CIDR rows, with Cisco, Arista, FRR, SONiC, and Junos syntax plus shadowing checks.
BGP Route Scale Calculator Estimate BGP route memory, peer fanout, and churn risk from prefix counts, retained paths, route bytes, update rates, and budgets.
BIMI Record Generator Generate a BIMI DNS TXT record with logo, evidence, selector, provider steps, and readiness checks for DMARC-aligned mail rollout.
BIMI Validation Report Validate BIMI for a domain and selector with DNS, DMARC, SVG logo, and PEM certificate checks, then review gate scores and fix notes.
BIS/BAS Behavioral Style Proxy Assessment Map BIS/BAS motivation signals across caution, drive, reward response, and fun seeking with keyed scoring, balance labels, and answer review.
BMI-for-Age Percentile Calculator Calculate a child's BMI-for-age percentile from height and weight or a known BMI, then compare WHO/CDC z-score, category, and P95 severity cues.
BMR & TDEE Calculator Estimate BMR, TDEE, calorie targets, weekly pace, and macros from body measurements, activity, formula choice, and goal settings.
BRI-12 Resilience Proxy Assessment Check a 12-item resilience proxy, compare recovery, adaptation, support, and steady-anchor lanes, and track changes against a prior total.
Baby Formula Amount Calculator Estimate a baby formula day from age, weight, feeds, and formula share, with bottle targets, schedule checks, and pediatric caution flags.
Baby Formula Cost Calculator Estimate baby formula costs from prepared ounces, container yield, waste, taxes, shipping, and stock runway with monthly and reorder totals.
Babysitting Rate Calculator Estimate a babysitting quote from local hourly rates, children, care timing, duties, minimum hours, fees, and rounding in one breakdown.
Backup Capacity Calculator Plan backup repository capacity from data size, retention, change rate, copy tiers, reserves, raw overhead, and budget runway checks.
Backup Restore Time Calculator Estimate backup restore time from logical size, compression, tested throughput, fixed recovery phases, and RTO margin checks.
Backup Rotation Planner Plan a GFS backup rotation from full and incremental sizes, then compare net storage, raw capacity, retention horizon, and audit warnings.
Bakers Percentage Calculator Scale a bread formula by flour or dough weight with starter accounting, hydration math, yeast conversion, rounded weights, charts, and exportable bench notes.
Baluster Spacing Calculator Calculate baluster spacing from rail openings, part width, gap rules, stair rake, and rounded field marks with count, margin, and buy-list outputs.
Bandwidth Delay Product Calculator Size TCP windows from bandwidth and RTT, compare current buffers and stream counts, and spot BDP, overhead, and scaling warnings.
Barbell Plate Load Calculator Plan a barbell target load from bar, collars, and plate inventory, with per-side stacks, nearby reachable loads, and warm-up rows.
Barcode Generator Create Code 128, EAN-13, UPC-A, or Code 39 barcode artwork with check-digit handling, quiet-zone warnings, and label-fit guidance.
Base64 Encoder and Decoder Encode or decode Base64 text and files in your browser with URL-safe output, padding repair, byte inspection, and Data URL support.
Bathroom Exhaust Fan CFM Calculator Size a bathroom exhaust fan from room size, fixtures, duct path, moisture load, candidate CFM, noise target, and timer coverage.
Battery Charge Time Calculator Estimate battery charge time from capacity, SOC window, charger or source cap, taper behavior, C-rate guidance, deadline fit, and energy cost.
Beck Anxiety Inventory (BAI) Assessment Score the 21-item BAI for past-week anxiety symptoms, review severity bands, the 16+ cue, symptom mix, high items, and prior-score change.
Beck Depression Inventory-II (BDI-II) Score 21 BDI-II depression-symptom answers over two weeks, see severity bands, Item 9 safety context, driver items, and answer exports.
Beck Hopelessness Scale (BHS) Assessment Assess past-week hopelessness with 20 true-or-false BHS items, severity bands, score-source charts, and clear follow-up cautions.
Beginning Sounds Sheet Generator Build beginning-sound worksheets from a word list, review inferred sounds and focus-bank warnings, then print student sheets with answer keys and charts.
Behavior Reward Chart Generator Build a positive behavior reward chart with observable goals, age-fit space checks, coaching notes, and printable sticker or token layouts.
Bicycle Tire Pressure Calculator Calculate front and rear bicycle tire pressures from rider weight, measured tire and rim width, surface, setup, temperature, and safety limits.
Big Five 10-Item Proxy Assessment Build a quick Big Five proxy profile from 10 statements, then check two-item pair gaps so midpoint scores do not look more settled than they are.
Big Five Aspect Scales (BFAS) Assessment Profile ten Big Five aspects from 100 BFAS-style statements, compare domain-pair gaps, and check reverse-keyed answers before sharing.
Big Five Assessment Score a 50-item IPIP Big Five profile, compare five factor means and item spread, and review non-normed trait signals before sharing.
Big Five Assessment Comparator Compare Big Five assessments by item budget, trait detail, source basis, and goal to choose a domain, facet, or aspect route.
Big Five Inventory-2 Style Proxy Assessment Map 60 BFI-2-style proxy statements into five domain means and 15 facet scores, with spread checks and answer review for cautious reading.
Bike Chain Length Calculator Calculate bike chain cut length from chainstay, gear teeth, suspension growth, and stock links with formula comparison and fit warnings.
Bill Split Calculator Divide a shared receipt into exact-cent or rounded payer amounts, showing how discounts, tax, service charges, and tip basis change the split.
Billable Hours Calculator Calculate billable hours from timer, duration, or clock rows, then review rounding, write-downs, realization, client totals, and exports.
Billable Utilization Target Calculator Plan a billable utilization target from capacity, revenue goals, bill rate, realization, benchmarks, and protected non-billable time.
Billing Document Generator Create an invoice or purchase order draft from item rows and tax, then check ledger totals, copy the text, or export JSON for handoff.
Binary Decimal Hex Converter Convert an integer between binary, decimal, hex, octal, and Base36 while checking signed widths, byte order, bit fields, and wrap.
Bingo Card Generator Build printable bingo cards from your own prompts, check whether the board has enough unique items, and export seeded cards with caller records.
Birthday Calculator Find exact age, birthday countdowns, leap-day observance, milestone ledgers, and planning windows from any birth and reference date.
Bitwise Operations Calculator Calculate fixed-width bitwise masks, shifts, rotations, flag tests, signed readouts, and bit-lane changes with binary and hex checks.
Blacklist Checker (DNSBL/RBL) Check a mail host or sender IP against DNSBL/RBL lists, separate real listings from resolver warnings, and export evidence for follow-up.
Bleach Dilution Calculator Mix a bleach dilution by ppm, percent, or ratio, with measured bleach and water volumes plus stock-strength and safety checks.
Block Randomization Schedule Generator Generate a reproducible block randomization schedule with arm ratios, strata, seeded blocks, balance checks, CSV, and JSON review output.
Board Game Sleeve Count Calculator Turn a board-game card manifest into sleeve pack counts, fit warnings, spare sleeves, cost totals, and box-bulk checks before buying.
Body Composition Calculator Estimate body-fat percentage from tape measurements, compare Navy, RFM, and BMI-age methods, and plan lean-mass, waist, and target-weight checks.
Body Mass Index (BMI) Calculator Calculate adult BMI from height and weight, compare WHO, Asia-Pacific, and NIH/CDC bands, and add waist and target-weight context.
Body Metrics Calculator Compare BMI, waist ratios, body-fat estimates, lean and fat mass, BSA, and reference weights with risk bands and spread warnings.
Body Recomposition Calculator Plan a body recomposition target from weight, body-fat change, lean-mass assumptions, runway, calories, protein, and uncertainty flags.
Body Surface Area Calculator Calculate body surface area from height and weight, compare BSA formulas, and check caps, BMI gates, reference lanes, and dose rounding.
Bodyweight Workout Guide Build a no-equipment bodyweight workout around your goal, time, level, and movement limits with swaps, readiness checks, and charts.
Bonus Pool Allocation Calculator Allocate one bonus pool across eligible participants with weights, proration, caps, floors, rounding, residuals, and balance warnings.
Bonus Tax Calculator Establish a 2026 U.S. bonus take-home estimate with supplemental withholding, FICA wage-base handling, pre-tax deferrals, and state/local assumptions.
Boxing Round Timer Plan and run boxing-style training rounds with rest, warnings, live bell cues, round-load charts, session logs, and cue-sheet exports.
Boxing Scoreboard Tracker Track a boxing scorecard with 10-point round buttons, referee warnings, point deductions, score-chart exports, and an event ledger.
Braille Alphabet Quiz Practice visual Braille letters and numbers with seeded multiple-choice drills, missed-answer review, downloadable results, and an accuracy chart.
Bread Water Temperature Calculator Calculate bread water temperature from DDT, flour, room, preferment, and mixer friction with practical bands and batch calibration.
Break-Even Calculator Find the unit sales needed to break even or hit a profit target from fixed costs, price, variable cost, stress cases, and safety margin.
Breast Milk Storage Time Calculator Calculate breast milk use-by times for fresh, thawed, warmed, or leftover milk with storage windows, label text, and care-context cautions.
Breathing Pacer Run a paced breathing session with custom inhale, hold, and exhale timing, live ring cues, phase charts, timeline exports, and browser cue options.
Brief Resilience Scale (BRS) Assessment Score the six-item BRS, review the 1-5 mean band, reverse-scored items, weakest recovery cues, and shareable chart or answer exports.
Brief Resilient Coping Scale (BRCS) Assessment Score the four BRCS coping items, place the 4-to-20 total in low, medium, or high resilient-coping bands, and review item gaps.
Brief Rumination Response Scale Assess a 10-item rumination pattern, compare brooding with reflective pondering, and turn top loops into a non-diagnostic follow-up note.
Brief Self-Control Scale (BSCS) Assessment Assess 13-item trait self-control, see the total, mean score, reflection lanes, reverse scoring, and retest cues for comparable check-ins.
Bug Report Generator Turn bug details into tracker-ready Markdown, triage fields, JSON, and a reproducibility checklist with severity and privacy review notes.
Build Artifact Storage Calculator Estimate retained CI artifact storage from build cadence, retention, active refs, compression, caches, reserve, and quota headroom.
Bulk Sender Requirements Checker Check bulk sender readiness against Gmail, Yahoo, and Outlook requirements using DNS, headers, spam rate, and unsubscribe evidence.
Business Days Calculator Count business days or shift a deadline with custom weekend rules, pasted holidays, endpoint controls, and skipped-date ledgers.
CAA Validation Report Validate CAA policy for a hostname with CNAME and parent lookups, wildcard checks, issuer findings, DNS evidence, and exportable reports.
CBT-I Sleep Diary Tracker Track CBT-I sleep diary nights with sleep efficiency, wake drift, trend charts, locally saved rows, and review prompts for CBT-I check-ins.
CBT-I Sleep Window Calculator Plan a CBT-I sleep window from diary sleep and a fixed wake time, with bedtime shift checks, safety floors, and weekly review cues.
CD-RISC-10 Resilience Proxy Assessment Run a CD-RISC-10-style resilience proxy, not an official score, with 0-40 bands, support-domain mapping, and prior-score change checks.
CDN Cache Hit Savings Calculator Estimate CDN cache-hit savings from traffic, cacheable share, origin costs, CDN charges, payback, and break-even hit-rate checks.
CI Failure Log Analyzer Analyze a failed CI job log, rank line-numbered failure clues, group stages, suggest next checks, and mask secret-like snippets before sharing.
CI Runner Capacity Calculator Estimate CI runner slots from job volume, occupied minutes, retry load, burst pressure, utilization headroom, and queue-wait targets.
CIDR Allowlist Risk Checker Check CIDR allowlists for broad ranges, sensitive ports, stale review dates, missing owners, and overlaps with scored triage evidence.
CODEOWNERS Coverage Analyzer Check CODEOWNERS coverage for a pull request, spot missing, ownerless, or catch-all ownership gaps, and export a review-ready fix queue.
CORS Policy Risk Checker Check CORS response headers against origin, credential, cache, exposed-header, and private-network assumptions with scored risks and fixes.
CPS Test Measure clicks per second in your browser with timed target runs, goal checks, accuracy tracking, consistency scoring, local history, and pace charts.
CSP Header Generator Draft a Content Security Policy header with nonce, hash, or allowlist script controls, reporting headers, directive review, and rollout warnings.
CSP Header Policy Checker Check a Content-Security-Policy header for risky script rules, missing baseline directives, reporting gaps, and rollout fixes before enforcement.
CSS Gradient Generator Generate CSS gradients with live geometry, draggable color stops, modern color-space choices, syntax warnings, and copy-ready CSS output.
CSS Minifier Minify CSS in your browser, keep token-sensitive syntax intact, compare byte savings, and catch parser or handoff warnings before release.
CVC Word Practice Sheet Generator Generate printable CVC word practice sheets from short-vowel lists, with family filters, sound boxes, answer keys, and review for rejected words.
Cache TTL Hit Rate Calculator Model cache TTL hit rate from request reuse, fixed or sliding expiry, purge loss, freshness pressure, target TTL, and latency savings.
Cafe Drink Cost Calculator Price a cafe drink from recipe lines, waste, packaging, labor, overhead, card fees, and margin targets with rounded menu-price checks.
Caffeine Content Calculator Estimate caffeine from drink size, label values, servings, body weight, daily guides, and half-life timing with charts and warnings.
Caffeine Cut-off Calculator Calculate the latest caffeine cut-off before bed from dose, half-life, absorption, and residual targets, with candidate-time and daily-limit checks.
Cake Servings Calculator Plan cake servings from guest count, cut style, pan or tier size, and reserve, with batter, icing, shortage, and held-top-tier estimates.
Calendar ICS Generator Build an import-ready ICS calendar file with escaped event text, timezone-aware timing choices, reminders, compatibility checks, and downloads.
Calories Burned Calculator Estimate calories burned from weight, activity MET, duration, and model choice, with active-only burn, weekly credit, and target timing.
Camera Memory Card Capacity Calculator Plan camera memory cards from stills, video bitrate, reserve, dual-slot mode, and speed class with capacity and write-speed checks.
Capacitor Calculator Calculate parallel-plate capacitance from geometry and dielectric choices, then check charge, stored energy, field stress, and voltage margin.
Capacity Upgrade Brief Report Build a capacity upgrade brief from utilization growth, threshold timing, lead time, and ranked options with charts and approval-ready notes.
Capital Gains Tax Calculator Estimate U.S. capital gains tax from sale proceeds, basis, income, losses, and gain treatment with federal bands, NIIT, and scenarios.
Car Loan Calculator Calculate a car loan payment from price, APR, term, trade equity, tax, fees, and extra principal with payoff and cost warnings.
Car Tire Pressure Calculator Plan cold tire pressure from placard or vehicle presets, loaded weight, axle share, tire width, and temperature drift with add-or-bleed steps.
Carb Loading Calculator Plan race-week carbohydrate targets from body weight and event length, with daily grams, meal blocks, ramp timing, and gut-tolerance flags.
Carpet Calculator Estimate carpet order quantity from room size, roll width, cut direction, waste, pattern repeat, and costs with seam and offcut checks.
Case Converter Convert headings, labels, filenames, and identifiers into 13 case styles with line-by-line conversion, acronym control, and accent-folded slugs.
Cash Flow Runway Calculator Calculate cash runway from bank cash, expected collections, outflows, growth, reserve floors, and scenarios with funding-gap cues.
Ceiling Fan Size Calculator Choose a ceiling fan size from room area, airflow target, ceiling height, moisture rating, clearance, downrod guidance, and run-cost checks.
Cement Board Sheets Calculator Estimate cement board sheets for floors, walls, and shower surrounds with waste, spares, fasteners, tape, thinset, membrane, and cost checks.
Center for Epidemiologic Studies Depression (CES-D-20) Screen past-week depressive symptoms with CES-D-20 scoring, cutoff context, symptom clusters, high-intensity items, and local exports.
Ceph Storage Capacity Calculator Estimate Ceph usable capacity from node sizes, replica or erasure-code protection, failure-domain reserve, nearfull policy, and PG hints.
Certificate Inventory Expiry Checker Check certificate inventory expiries from CSV rows in your browser, ranking urgent renewals, owner gaps, manual-renewal risk, and public validity findings.
Certificate Renewal Window Calculator Plan TLS certificate renewals from population, validity, lead time, spread, daily capacity, retry reserve, and safety buffer before expiry.
Certificate Signing Request (CSR) Decoder Decode a CSR in your browser, check SAN coverage and key strength, and review signature, fingerprint, and issuance-readiness notes.
Certificate Signing Request (CSR) Generator Generate a CSR and RSA private key in your browser, review SANs and fingerprints, and export PEM plus OpenSSL guidance without sending keys.
Certificate Transparency Checker Check a TLS certificate fingerprint against public CT data, compare issuer and hostname evidence, and spot revocation or reporting clues.
Change Risk Assessment Reporter Assess IT change risk from impact, likelihood, readiness, disruption, and evidence, then produce a residual-risk report with gates and chart.
Changelog Generator Draft a changelog from notes, Markdown sections, or Conventional Commit subjects with Keep a Changelog grouping, SemVer cues, and copy-ready Markdown.
Checklist and Log Generator Turn item lines into a checklist, to-do list, or reading log with a ready draft, review tables, and reusable handoff exports.
Chess Clock Timer Run a two-player chess clock in your browser with Fischer, Bronstein, delay, and sudden-death modes plus move logs and balance charts.
Childcare Cost Calculator Estimate monthly and annual childcare costs from tuition, nanny hours, extras, subsidies, income share, and a 2025 federal care-credit scenario.
Circle Time Routine Planner Build a preschool circle time routine from age, group size, theme, and materials with age-fit warnings, block timing, rhythm checks, and exports.
Circuit Training Timer Plan a circuit training timer with named stations, work and transition timing, live phase cues, coaching checks, charts, and exportable run sheets.
Cisco ACL Generator Generate Cisco IPv4 ACL commands from flow rows with wildcard conversion, sequence planning, safety review tables, and platform syntax checks.
Cisco Interface Config Generator Generate Cisco interface config for routed, access, or trunk ports with VLAN checks, syntax profiles, command audit, and copy-ready output.
Citation Generator Draft citations for web, book, article, legal, media, dataset, and AI sources with style-specific entries, citation forms, and review notes.
Classroom Resource Pack Generator Generate classroom resource packs from grade, topic, objectives, time, materials, and support notes with draft text and teacher handoff checks.
Classroom Supply Budget Calculator Plan classroom supply orders from enrollment, group kits, reusable stock, pack rounding, discounts, tax handling, and budget caps.
Cleaning Quote Calculator Price a residential cleaning job from rooms, condition, add-ons, travel, labor cost, and margin checks with quote notes ready to copy.
Click Counter Count repeated events with a live hit target, fixed step size, corrections, session peak tracking, and exportable activity rows for handoff.
Cloud Egress Cost Calculator Estimate cloud data transfer spend from monthly volume, cache savings, tiered rates, request add-ons, peak months, and budget variance.
Cloud NAT Gateway Cost Calculator Estimate monthly cloud NAT costs from gateway hours, processed traffic, endpoint offload, egress, cross-zone transfer, IPv4 charges, and budget cap.
Cloud Tag Coverage Analyzer Audit cloud inventory tags, find resources missing required keys or allowed values, and export coverage, gap ledgers, charts, and cleanup queues.
Cloud-init Network Config Generator Build cloud-init version 2 network-config YAML for static VM interfaces with CIDR addresses, routes, DNS, MAC matching, and validation warnings.
Cloze Worksheet Generator Turn a reading passage into a cloze worksheet with target blanks, a shuffled word bank, answer key, teacher checks, and exports.
Coffee Bag Yield Calculator Plan how long a coffee bag lasts from weight, dose or brew water, waste, daily servings, price, and reorder timing with serving cost.
Coffee Brew Planner Plan a coffee brew from target cup size, ratio, bloom, and retained water, then get dose, pour timing, TDS checks, and adjustment notes.
Coffee Brew Suite Plan pour-over, French press, espresso, moka, and cold brew recipes with dose math, brew schedules, strength charts, and dial-in cues.
Coffee Catering Quantity Calculator Plan coffee for an event by estimating drinkers, brewed gallons, regular and decaf batches, supplies, station pace, and cost per guest.
Coffee Cupping Score Calculator Score a coffee cupping sample with quarter-point attributes, cup-based support deductions, defect penalties, bands, and audit tables.
Coffee Drink Calorie Calculator Estimate coffee drink calories from milk, syrups, cream, toppings, and caffeine assumptions, then compare recipe changes before logging.
Coffee Extraction Yield Calculator Calculate coffee extraction yield from dose, beverage mass, and TDS or Brix, with target bands, bypass estimates, taste cues, and exportable brew logs.
Coffee Extraction and Strength Calculator Calculate coffee extraction yield and cup strength from dose, beverage mass, and TDS or Brix, with target bands, warnings, and dial-in moves.
Coffee Freshness Window Checker Check a coffee bag's roast-date freshness window with brew method, grind, storage, exposure warnings, use-pace checks, and a timeline.
Coffee Roast Yield Loss Calculator Calculate coffee roast yield loss from green and roasted weights, then plan target output, QC pulls, package counts, and sellable-unit cost.
Coffee Strength Calculator Measure coffee strength from TDS or Brix readings, estimate extraction yield, and compare the brew with filter, immersion, or espresso targets.
Coffee Water Recipe Calculator Build a coffee water recipe from GH, KH, TDS, and batch size, with RO dilution, mineral gram targets, charts, and espresso cautions.
Coffee to Water Ratio Calculator Plan coffee-to-water ratios from a dose or target yield, then estimate brew water, cup yield, batch scaling, and method-window warnings.
Cognitive Reflection Test (CRT-3) Assessment Take the classic three-item Cognitive Reflection Test, separate correct answers from intuitive lures, and review a 0 to 100 reflection index.
Cognitive Reflection Test (CRT-7) Assessment Take a seven-item Cognitive Reflection Test, compare classic and extension items, separate lures from other misses, and review rethink cues.
Coin Flipper Flip a fair, biased, or seeded coin in your browser, then review streaks, expectation gaps, charts, ledger rows, and exports from one recorded session.
Cold Brew Dilution Calculator Plan cold brew dilution from concentrate ratio to ready-drink serving yield, with water or milk splits, ice melt, service loss, and batch sizing.
College GPA Calculator Project college GPA from current courses and prior transcript credits, with repeat, pass/fail, standing, target-gap, and grade-lift checks.
Color Palette Generator Generate a HEX-based color palette, tune harmony and lightness, check WCAG contrast, and copy swatches, CSS tokens, charts, or JSON.
Comma-Separated Values (CSV) Converter Convert CSV-like text into previews, profiles, and reusable exports in your browser while checking headers, delimiters, types, and row warnings.
Commute Cost Calculator Estimate annual commute cost for driving, transit, or hybrid schedules with fuel, parking, tolls, fares, time value, and scenario charts.
Companion Planting Checker Check a crop list for companion planting conflicts, useful pair notes, family repeats, water or shade issues, and confidence cues.
Compost Carbon-to-Nitrogen (C:N) Ratio Calculator Calculate a compost C:N ratio from browns, greens, weights, and moisture, then see balance warnings, repair amounts, and dry-matter charts.
Compound Interest Calculator Project compound-interest growth with recurring deposits, taxes, fees, inflation, goal timing, detailed schedules, and rate-sensitivity charts.
Concrete Calculator Estimate concrete volume for slabs, footings, post holes, or takeoffs with waste, bag counts, ready-mix rounding, and cost checks.
Conduit Fill Calculator Check conduit fill for EMT, IMC, RMC, and PVC from a conductor schedule, fill basis, same-type sizing, and pull-planning warnings.
Config Drift Checker Compare intended and observed config text, spot changed, missing, extra, and priority drift, and build an exportable remediation ledger.
Container Image Pull Time Calculator Estimate container image pull time from size, cache coverage, bandwidth, pull lanes, unpack speed, retries, and rollout optimization levers.
Container Security Scan Analyzer Analyze container scan output in your browser, normalize vulnerability findings, test release gates, and rank fixable packages for remediation.
Contractor Markup Margin Calculator Price or audit a contractor bid from direct cost, overhead, contingency, and profit targets, then compare margin, markup, and break-even risk.
Conventional Commit Messages Checker Check Conventional Commit headers or full messages, find format issues, and map valid changes to major, minor, patch, or no release impact.
Cooked Yield Shrinkage Calculator Turn AP, trim, cooked, and portion weights into cooked yield, shrinkage, true cooked cost, portion cost, and next-batch purchase quantities.
Copenhagen Burnout Inventory (CBI) Assessment Score CBI personal, work, and client-related burnout on 0-100 scales, compare PUMA anchors, and identify the highest-burden answers.
Corrected Age (Preterm) Calculator Calculate a preterm baby's corrected age from due date or gestational age, then map milestone windows, age-use notes, and handoff timing.
Cost Per Hire Calculator Calculate cost per hire from recruiting spend and hires, then compare cost shares, target variance, software allocation, and recruiting ratio.
Count and Color Sheet Generator Build count-and-color worksheets for 0 to 20 with printable object rows, color plans, answer keys, repeatable mixes, and a count-load chart.
Countdown Timer Count down to a deadline across local, UTC, offset, or IANA zones with buffer minutes, reminder milestones, progress, and elapsed-time output.
Countertop Slab Yield Calculator Estimate countertop slab reserves from runs, islands, backsplashes, cutouts, and slab size with yield, seam-risk, and cost checks.
Country Flags Quiz Practice country flags by region or world pool, replay seeded quizzes, and review missed answers with score percentages and an accuracy chart.
Country Information Lookup Find a country by name, ISO code, calling code, currency, capital, or region, then compare profile facts, map links, and source status.
Country Take-Home Pay Comparator Compare country salary offers after employee tax, payroll contributions, exchange rates, and cost indexes with source notes and buying-power ranks.
Creatine Loading Calculator Calculate creatine loading or maintenance from body weight, serving split, label units, health context, and container supply checks.
Credit Card Calculator Estimate a credit card payoff timeline from balance, APR, payments, new charges, and target dates, with interest totals and warning cues.
Credit Card Number Generator Generate sandbox payment card numbers with Luhn checks, custom BIN/IIN options, seeded batches, optional CVV or expiry, and prefix reports.
Credit Card Number Validator Check payment-card test numbers in your browser with Luhn, issuer-length review, batch traces, charts, and PAN-handling cautions.
Cricket Scoreboard Tracker Score a cricket innings ball by ball, handling legal balls, extras, wickets, chase targets, run rates, projections, and a scoring worm.
Cron Expression Parser Parse a Unix cron expression locally, expand the five fields, preview upcoming runs, and flag timezone, macro, day-rule, or dialect risks.
Cronbach Alpha Calculator Calculate Cronbach's alpha from survey response tables, with reverse scoring, missing-data choices, item diagnostics, and report wording.
Crontab Generator Build crontab entries for user or system files from presets, pasted lines, or manual fields, with syntax checks, warnings, and install notes.
Crop Rotation Planner Plan a bed-by-bed crop rotation, flag same-family disease conflicts, balance heavy feeders and legumes, and project future seasons with heatmaps.
Cross Stitch Fabric Size Calculator Calculate cross stitch fabric size from stitch count and fabric count, then check margins, shrink reserve, rounding, and stock fit.
Crossword Puzzle Generator Build custom crosswords from answer-clue lists, compare grid fit and crossings, then export printable puzzles, answer keys, and clue tables.
Current Time Check your browser's current time as local or UTC, lock one timestamp, and compare ISO, Unix, offset, DST, and day-boundary clues.
Cut Down, Annoyed, Guilty, Eye-opener (CAGE) Assessment Screen four CAGE alcohol cues, compare 1+, 2+, and 3+ Yes thresholds, and review Eye-opener patterns with follow-up guidance.
DANE TLSA Validation Report Check DANE TLSA records for mail or TLS services, verify owner-name routing, DNSSEC AD evidence, digest matches, and readiness issues.
DARVO Pattern Reflection Reflect on one confrontation for DARVO-style denial, attacks, and role reversal with 18 cue ratings, tactic means, and safety-minded notes.
DB Replica Lag Catch-up Calculator Estimate replica lag catch-up from backlog, write rate, and apply throughput, then compare target windows, retained-log risk, and throttle or boost scenarios.
DERS-18 Emotion Regulation Proxy Check Review last-two-week emotion-regulation strain with an 18-item DERS-style proxy, six domain scores, 4+ item cues, and browser-side scoring.
DHCP Scope Calculator Plan a DHCP scope from subnet, pool, exclusions, reservations, growth, lease time, and utilization headroom before clients run short.
DKIM DNS Record Generator Generate a DKIM DNS TXT record from selector, domain, and public key input, with key checks, split-string guidance, and publish-ready DNS fields.
DKIM Validation Report Check a DKIM selector for a signing domain, review TXT publication, key strength, testing flags, and resolver evidence before troubleshooting mail authentication.
DMARC DNS Record Generator Build a DMARC TXT record for a domain with owner labels, report URIs, alignment choices, authorization notes, and rollout warnings.
DMARC Validation Report Check a domain's DMARC TXT record, policy tags, alignment modes, report destinations, rollout signals, and control scores using public DNS.
DNS Cache Capacity Calculator Estimate DNS resolver cache memory from QPS, hit rate, distinct inserts, TTL, DNSSEC overhead, headroom, and upstream-load charts.
DNS Configuration Report Audit a domain's public DNS records with resolver snapshots, posture notes, TTL tiers, latency charts, and copyable reports for migration checks.
DNS Delegation Trace Analyzer Trace a hostname through delegation, aliases, DNSSEC clues, resolver drift, and negative-cache timing before chasing web, mail, or certificate failures.
DNS Denial Proof Report Build a DNS denial proof for NXDOMAIN or NODATA with resolver evidence, NSEC/NSEC3 checks, retry timing, and validation warnings.
DNS Glue & Delegation Check Check DNS glue and delegation for a domain, flag risky nameserver address gaps, compare public resolver views, and export repair evidence.
DNS Propagation Checker Check DNS propagation across public resolvers, compare expected answers, and review TTL, DNSSEC, ECS, latency, and holdout clues.
DNS Record Enumerator Enumerate public DNS records for a domain, hostname, URL, email domain, or IP with resolver evidence, mail checks, DNSSEC clues, and hardening flags.
DNS Record Lookup Look up DNS records for a domain, host, or IP through Google or Cloudflare DoH with TTL charts, DNSSEC flags, and raw responses.
DNS TTL Change Window Calculator Plan a DNS TTL cutover window with drain timing, negative-cache checks, resolver-load warnings, and exportable runbook evidence.
DNS Wildcard Behavior Check Check whether a DNS wildcard answers random names, compare public resolver views, and spot branch or cache clues before changing records.
DNS Zone File Generator Build a DNS zone file draft from SOA, NS, MX, TXT, DNSSEC, and host records with TTL policy checks, a record ledger, and lint-ready text.
DNS Zone File Validator Validate a BIND-style DNS zone file for SOA/NS shape, TTLs, CNAME conflicts, mail readiness, DNSSEC handoff, and normalized output.
DNSSEC Validator Validate a domain's DNSSEC setup with trust-chain evidence, signature timing, resolver AD comparison, and exportable pass/fail reports.
DOCX Converter Convert a DOCX in your browser into clean HTML, Markdown, text, and audit-friendly exports with package checks, warnings, and image controls.
DORA Metrics Analyzer Analyze deployment CSV rows into DORA throughput, failure, recovery, and rework signals with warnings, charts, and exportable review tables.
DR Runbook Report Build a disaster recovery runbook from RTO, RPO, owners, dependencies, recovery steps, validation evidence, and readiness gates for review.
Data Transfer Rate Converter Convert a data transfer rate between bit and byte units, model overhead, and check payload ETAs, window fit, and SI or IEC labels.
Database Connection Pool Calculator Size a database connection pool across app instances and workers, then check headroom, deploy surge, full-pool risk, and per-holder caps.
Database Index Rollout Planner Plan a database index rollout with engine-aware SQL, build estimates, lock and replica-lag guardrails, risk scoring, and rollback notes.
Database Migration Risk Checker Check SQL migration risk before release with static scoring for destructive DDL, blocking indexes, large-table backfills, and rollout notes.
Database Storage Growth Calculator Plan database storage runway from table growth, indexes, logs, backups, replicas, headroom, autoscale ceilings, and cost signals.
Date & Time Difference Calculator Calculate elapsed time between dates with timezone offsets, workday counts, business-window overlap, checkpoint schedules, and exports.
Debt Repayment Calculator Plan debt payoff month by month from balances, APRs, minimums, and extra cash, then compare strategies, interest savings, and payoff milestones.
Decibel Calculator Calculate decibel levels from sound pressure, power, voltage, or custom references, then compare ratios, inverse values, and dB ladders.
Deck Materials Calculator Estimate deck boards, framing, posts, footings, railing, stairs, fasteners, waste, and budget with cut plans and layout checks.
Decodable Reading Passage Generator Build a controlled decodable reading passage from a phonics focus, then check word coverage, review words, questions, and teacher notes.
Dehumidifier Size Calculator Size a dehumidifier for damp rooms from area, humidity, temperature, drainage, runtime, bucket handling, and energy-cost estimates.
Dependency License Flags Checker Check dependency license evidence against allowed, review, and denied policies with SPDX expression triage, scope filters, risk scores, and review queues.
Dependency Update Risk Analyzer Triage dependency update rows by SemVer, runtime scope, security status, tests, and compatibility, then export owner-review queues and charts.
Depression Anxiety Stress Scales (DASS-21) Assessment Complete a DASS-21 past-week symptom screen with doubled subscale bands, highest-pressure item cues, cutoff context, and follow-up notes.
Depression Anxiety Stress Scales (DASS-42) Assessment Score the full DASS-42 questionnaire into Depression, Anxiety, and Stress bands, then review subscale patterns, charts, and private item answers.
Depth of Field Calculator Plan depth of field from lens, aperture, sensor format, focus distance, circle of confusion, background blur, framing, and motion checks.
Dew Point Calculator Calculate dew point from temperature and relative humidity, then compare surface margin, vapor pressure, comfort, and condensation risk.
Diaper Usage Calculator Estimate diaper usage, stock runway, reorder timing, and pack costs from daily changes, pack size, current stock, buffers, and fit checks.
Dice Roller Roll tabletop dice notation, estimate advantage, reroll, exploding, and target odds, and review totals with traces, charts, and session logs.
Diceware Passphrase Generator Create a Diceware passphrase in your browser from EFF long-list rolls, then review entropy, manual dice keys, site policy checks, and roll evidence.
Dimensional Weight Shipping Calculator Calculate dimensional shipping weight from packed box size, actual weight, carrier divisors, rounding rules, and packaging comparisons.
Discount Calculator Calculate an all-in discount total with stackable codes, coupons, shipping, tax, quantity, target gaps, and offer-pressure charts.
DoH Query Packet Crafter Craft a DNS-over-HTTPS wire query, compare GET and POST replay data, tune EDNS and DNSSEC flags, and decode live resolver replies.
Docker Compose Generator Build Docker Compose YAML for a service, then review image or build choices, port exposure, secrets, healthchecks, networks, and volumes.
Docker Compose Healthchecks Checker Check Docker Compose healthchecks for missing probes, weak timing, readiness blockers, restart gaps, and role-based coverage before handoff.
Dockerfile Generator Build a Dockerfile and .dockerignore for Node.js, Python, Go, or Java services with cache mounts, health checks, and hardening warnings.
Dockerfile Security Basics Checker Check a Dockerfile for risky build and runtime defaults, with weighted findings for base images, secrets, users, package hygiene, and release gates.
Dog Grooming Quote Calculator Price a dog grooming visit with size, coat, handling, add-ons, margin checks, intake cautions, and customer-ready quote text.
Drip Irrigation Zone Flow Calculator Calculate drip irrigation zone flow from layout, emitter count, or measured flow, with pressure correction, reserve margin, and split checks.
Drop Ceiling Grid Materials Calculator Estimate drop ceiling tiles, grid pieces, hanger wire, fasteners, cartons, and rough material cost from room size and panel module.
Dryer Vent Length Calculator Calculate dryer vent equivalent length with elbow, flex, and hood allowances, then compare the route with a selected limit and cleaning cues.
Drywall Materials Calculator Estimate drywall sheets, order area, compound, tape, screws, corner bead, weight, and cost from room dimensions, wall runs, or known area.
Duplicate Line Remover Remove repeated lines from pasted text or a local text file, tune case and whitespace matching, and audit kept rows with metrics and a ledger.
Dysfunctional Beliefs and Attitudes About Sleep (DBAS-16) Assessment Assess DBAS-16 sleep beliefs on a 0 to 10 scale, compare the mean with the 3.8 reference, and prioritize beliefs to review next.
ECMP Path Capacity Calculator Estimate ECMP usable capacity from healthy paths, link rate, demand, hash efficiency, headroom, failure runway, and largest-flow risk.
ECR-R-style Attachment Profile Proxy Map romantic attachment anxiety and avoidance with a 36-item ECR-R-style proxy, midpoint quadrant lens, cue contrasts, and browser-side scoring.
EDNS Client Subnet (ECS) Tester Check EDNS Client Subnet behavior for a DNS name by comparing hinted and control DoH lookups, echoed cache scope, answer drift, and resolver evidence.
EDNS Options Inspector Inspect a domain's EDNS OPT behavior through public DoH resolvers with DNSSEC, NSID, ECS, padding, packet sections, and replay evidence.
EMOM Workout Timer Plan and run EMOM workouts with minute targets, rest-buffer warnings, live cues, finish logging, charted pacing, and structured exports.
ENV Converter Convert .env files into YAML, JSON, runtime env, INI, and properties output while checking parsed lines, expansion gaps, and secret-like values.
EPQ-R Style PEN Personality Proxy Assessment Take a 28-item EPQ-R-style personality proxy, compare P, E, N, and L scores, and audit keyed answers before sharing the profile.
EPW-Style Daytime Sleepiness Proxy Assess usual daytime sleepiness with eight EPW-style dozing ratings, then review the 0-24 total, reference zone, safety cue, and context pattern.
EQ-5D-5L Health Status Survey Record an EQ-5D-5L health state for today, compare US 2019 and England 2018 utilities with EQ VAS, and see which dimension drives burden.
EV Charger Circuit Load Calculator Size an EV charger branch circuit from EVSE current, breaker choice, panel headroom, connection caps, and conductor voltage-drop checks.
EV Range Calculator Calculate practical EV range from battery capacity, charge reserve, consumption units, driving profile, trip distance, and sensitivity checks.
Early Math Worksheet Generator Generate printable early math worksheets for counting, ten frames, missing numbers, patterns, and shape fractions with answer keys and skill charts.
Edinburgh Postnatal Depression Scale (EPDS) Assessment Score EPDS answers for the last 7 days, review 0 to 9, 10 to 12, and 13+ follow-up cues, and keep Question 10 safety flags visible.
Effective Interest Rate Calculator Convert quoted interest rates to effective annual yield, compare compounding bases, and check equivalent quotes, real yield, and holding-period return.
Effective Tax Rate Calculator Calculate an effective tax rate from bracket presets or manual totals, then compare income-tax-only, all-in, marginal, and side-income views.
Electric Vehicle (EV) Charging Time Calculator Estimate EV charging time from battery size, state of charge, charger limits, taper, derates, cost, added range, and departure fit.
Electrical Box Fill Calculator Calculate NEC-style box fill from conductors, grounds, yokes, clamps, supports, and terminal blocks with cubic-inch margins and size options.
Electrical Panel Load Calculator Estimate home electrical service demand in amps from floor area, appliances, HVAC, EV charging, and added loads with target headroom checks.
Email Header Analyzer Check raw email headers in your browser for relay delays, SPF/DKIM/DMARC alignment, ARC context, sender mismatches, and spoof-risk clues.
Email Signature Generator Build an email signature with rendered preview, HTML and plain-text output, link normalization, width limits, and compatibility checks.
Employee Total Cost Calculator Estimate the full employer cost of a role from pay, burden, benefits, equipment, software, overhead, and productive-hour assumptions.
Employee Turnover Rate Calculator Calculate employee turnover for a reporting period, compare exit categories, and catch denominator or headcount reconciliation issues.
Endurance Fuel Planner Plan run or ride fueling by duration, effort, sweat rate, drink mix, gels, bottles, sodium, and reminder intervals with warning checks.
Environment Variable Inventory Checker Check environment variables against a required list and get redacted findings for missing, blank, duplicate, placeholder, and secret-like entries.
Ephemeral Port Exhaustion Calculator Estimate ephemeral port exhaustion from hot-destination connection churn, source address inventory, reuse hold time, reserves, and NAT caps.
Epoch Time Converter Convert Unix epoch seconds, milliseconds, and wall-clock datetimes into UTC, selected-zone timestamps, date parts, and year-progress checks.
Epworth Sleepiness Scale (ESS) Assessment Score usual daytime dozing with the ESS, review the 0 to 24 sleepiness band and driving cue, and export charts or answer rows when needed.
Error Budget Burn Rate Calculator Calculate SLO burn rate from current error ratio and remaining budget, then compare runway, alert windows, and mitigation targets.
Error Budget Calculator Calculate how much SLO error budget is used from observed traffic, bad events, burn gates, and runway estimates before release review.
Espresso Shot Planner Plan espresso shots from dose, ratio, yield, time, pressure, and temperature, then log pulls against flow maps and tolerance bands.
Ethernet Frame Efficiency Calculator Calculate Ethernet frame efficiency from payload size, VLAN tags, and wire-time overhead, with goodput, frame-rate, and target-fit checks.
Event Portable Toilet Calculator Estimate event portable toilet rentals from peak crowd, duration, alcohol, food, weather, ADA coverage, handwashing, servicing, and budget.
Event Schedule Generator Build an event run sheet from session rows or CSV, catch overlaps and short handoffs, and export schedules, timelines, and calendar files.
Event Seating Capacity Calculator Estimate event seating capacity from room size, fixed zones, aisle reserve, layout density, occupancy caps, staff count, and attendance target.
Exchangeable Image File Format (EXIF) Viewer & Editor Inspect image EXIF metadata locally, flag GPS and serial privacy risks, and export a cleaned copy with JPEG edits when supported.
Expense Policy Checker Check expense rows against receipt rules, category caps, mileage allowances, duplicate patterns, and blocked categories with review-ready flags.
Extensible Markup Language (XML) Converter Convert XML in your browser into JSON, JSON Lines, tables, SQL inserts, and formatted XML with record-path checks and schema clues.
Extension Cord Voltage Drop Calculator Estimate extension cord voltage drop, load-end voltage, heat loss, and one-way length limits with AWG, temperature, and rating checks.
Faraid Calculator Calculate Faraid estate shares after debts, expenses, and capped wasiat, with heir rows, residue handling, profile comparisons, and review notes.
Fat-Free Mass Index (FFMI) Calculator Calculate FFMI from weight, height, and body-fat or lean-mass readings, with normalized comparison bands, sensitivity checks, and goals.
Favicon Generator Generate favicon PNGs, favicon.ico, HTML links, and manifest icons from one image with local processing, size checks, and previews.
Feature Flag Cleanup Checker Audit feature flag inventories for stale, expired, ownerless, dependency-blocked, and code-referenced flags with a prioritized cleanup queue.
Fence Materials Calculator Estimate fence posts, infill, rails, concrete bags, gate hardware, waste, spacing impact, and material cost from a measured run.
Fertilizer Solution Mix Calculator Calculate an N-P-K fertilizer solution recipe from ppm targets, reservoir volume, soluble grades, blend fit, and stock-density warnings.
Fiber Link Budget Calculator Calculate a fiber link budget from optic power, route loss, connectors, splices, passives, reserve, and overload limits with margin ledgers.
Field Service Trip Charge Calculator Price a field-service trip charge from route distance, drive time, labor, vehicle cost, margin, minimums, premiums, and repair-credit policy.
Field of View Calculator Plan camera framing from sensor size, focal length, and subject distance with angle-of-view math, target-fit checks, and lens sweep data.
File Encryptor & Decryptor Encrypt or decrypt one local file in your browser with AES-GCM, Argon2id or PBKDF2 settings, recovery metadata, and downloadable audit details.
File Hash Generator Hash a local file in your browser, compare MD5, SHA, SHA-3, or RIPEMD-160 digests, and keep a session ledger with salt context.
File Transfer Time Calculator Estimate file transfer time from size and bandwidth, then test overhead, compression, latency, packet loss, TCP window, and deadline limits.
File and Disk Size Converter Convert file and disk sizes across decimal and IEC units, then estimate usable capacity, allocation slack, and the first common storage tier.
File to PDF Converter Convert images, Markdown, HTML, and text to PDF in your browser, with layout warnings, local file preflight, and review exports.
Filebeat Grok Pattern Generator Generate a Filebeat Grok pattern from one sample log line, with ECS field mapping, sample-match coverage, and optional ingest pipeline JSON.
Final Grade Calculator Find the final exam score needed for a target course grade, including remaining work, curves, buffers, score ceilings, and runway checks.
Finland AIS Vessel Tracker Find Finnish AIS vessel reports by MMSI, IMO, callsign, name, type, or radius, then review identity, motion, signal checks, and maps.
Fireplace Screensaver Simulator Tune a fireplace screensaver in your browser with live flames, embers, smoke, fullscreen preview, FPS metrics, notes, and scene exports.
Firewall Deny Log Analyzer Analyze firewall deny logs in your browser, group blocked source-service paths, and prioritize watched ports with CIDR direction checks.
Firewall Rule Matrix Generator Turn firewall flow rows into a review matrix with risk scoring, audit findings, object plans, platform handoff notes, and scope heatmaps.
Firewall Rule Review Report Review firewall rule inventories for stale, broad, expired, ownerless, or privileged access and produce an evidence-backed cleanup queue.
Firewall Shadow Rule Checker Find shadowed firewall rules in ordered ACL exports, compare full and partial overlaps, flag object warnings, and prioritize cleanup work.
Five Number Summary Calculator Calculate a five-number summary from pasted values, compare quartile methods, flag IQR outliers, and review spread with a box plot.
Fixed Deposit Calculator Calculate a fixed deposit maturity value from APR or APY, then compare after-tax yield, real value, payout cash, and coverage-limit flags.
Flagstone Patio Materials Calculator Estimate flagstone patio materials from the planned area, then size stone, base, bedding, joint fill, edging, fabric, waste reserve, and costs.
Flashcard Sheet Generator Create printable flashcard sheets from pasted or imported pairs, with duplex alignment checks, seeded shuffles, cut guides, and parse logs.
Flight Delay Tracker Track a flight by number and departure date, then compare provider or sample status, delay minutes, route matches, and timeline details.
Flight Emissions Tracker Estimate flight CO2e from airport legs or manual distances, with cabin class, SAF, radiative forcing, offset cost, and leg audit details.
Flight Tracker Track an aircraft by callsign or ICAO hex, compare OpenSky freshness and position clues, and review map, chart, and audit details.
Flooring Calculator Estimate flooring boxes from room area and carton coverage, including waste, spare stock, full-box rounding, cost, and buying-risk checks.
Focus Stacking Step Calculator Plan macro focus-stacking rail steps from magnification, aperture, subject depth, overlap, and rail precision with frame counts and warnings.
Forbearance 8 Assessment Reflect on eight forbearance items, compare fault tolerance with viewpoint room, and review a private 8 to 48 profile for ordinary conflict.
Fraction Practice Generator Generate fraction practice worksheets with seeded problem sets, worked answer keys, duplicate warnings, and print-ready classroom layouts.
Free Fall Calculator Calculate free-fall time, impact speed, path length, and optional kinetic energy from height, launch velocity, gravity, and unit choices.
Free Space Path-loss & RSSI Calculator Calculate RF free-space path loss and predicted RSSI, then check fade reserve, Fresnel clearance, SNR, and range or band tradeoffs.
Freelance Hourly Rate Calculator Calculate a freelance hourly rate from income goals, expenses, tax reserves, unpaid time, utilization, fees, buffers, and quote guidance.
Freelance Tax Set-Aside Calculator Set aside tax from freelance receipts with 2026 bracket math, self-employment tax, safe-harbor targets, state rates, and buffers.
Freight Class Density Calculator Calculate LTL freight density from packed dimensions and gross weight, estimate density class, and flag boundary, packaging, and quote risks.
French Drain Materials Calculator Estimate French drain gravel, pipe, fabric, required fall, outlet checks, and material cost from trench dimensions before ordering.
Friel Heart Rate Zone Calculator Calculate Friel heart rate zones from LTHR or field-test averages, with sport-specific bands, current-HR lookup, session planning, and exports.
Fuel Efficiency Converter Convert fuel efficiency between MPG (US), L/100 km, and km/L with direction cues, unusual-value warnings, rounded equivalents, and charted sensitivity.
GHS Hazard Pictograms Quiz Practice GHS hazard pictograms with seeded rounds, four-choice symbol matching, missed-answer review, and an accuracy split chart.
GPA Calculator Calculate a transcript-style GPA from course credits and grades, with repeat rules, pass/fail handling, weighted-course bonuses, and target-gap checks.
GST Calculator Calculate GST from taxable, inclusive, or tax-only amounts with quantity rounding, rate presets, tax-head splits, and receipt-ready exports.
Garden Bed Planner Plan a raised bed or patio container layout with plant spacing, seed and tray needs, soil volume, harvest timing, and row plan exports.
Garden Calendar Planner Build a dated garden calendar from crops, frost dates, season, bed notes, and succession waves with seed-start and workload checks.
Gas Mileage Calculator Calculate gas mileage from a trip or fill-up, compare MPG with L/100 km, and estimate fuel cost, tank range, and reference gaps.
General Self-Efficacy Assessment Score the 10-item General Self-Efficacy Scale, compare your 10-40 total with reference means, and review supports to reinforce.
Generalized Anxiety Disorder (GAD-7) Assessment Score the seven GAD-7 symptom items, check the 10-point screening cue, and compare anxiety burden with daily function impact.
Generator Watts Calculator Estimate generator running and starting watts from load rows, surge timing, reserve, derating, and safety checks before choosing a size.
Geriatric Depression Scale (GDS-15) Assessment Screen older-adult mood with 15 keyed GDS yes-or-no items, boundary-aware cutoffs, item patterns, and exportable follow-up reports.
Git Branch Staleness Analyzer Audit Git branch inventories locally with age, merge, protection, ahead/behind, and gone-upstream signals before deleting stale branches.
Git Diff Risk Analyzer Analyze Git diff summaries before review, scoring churn, sensitive paths, deletions, generated files, and binary rows into a reviewer queue.
GitHub Actions Cache Config Generator Build GitHub Actions cache YAML from your ecosystem, lockfiles, paths, restore keys, and runner notes with review checks before copying.
GitHub Actions Matrix Generator Generate GitHub Actions matrix workflow YAML with runtime and runner axes, cache choices, include/exclude rows, and review checks.
GlusterFS Volume Capacity Calculator Estimate GlusterFS usable capacity from brick sizes, replica or dispersed layout, arbiter sizing, stranded space, and recovery headroom.
Golden Hour Calculator Plan golden hour and blue hour times for a shoot by location, date, sun angle, arrival buffer, sun direction, and horizon cautions.
Good VO2 Max by Age Lookup Look up the Good VO2 max range by adult age cohort and reference sex, then classify a measured value with next-tier gap notes.
Grade Calculator Calculate a current course grade from points, percentages, or letters, then test weights, dropped scores, late penalties, and remaining-work targets.
GraphQL Formatter Format GraphQL queries, fragments, and schema SDL locally, compare readable and compact output, and catch bracket or role warnings before handoff.
Gravel Calculator Estimate gravel volume, tonnage, supplier rounding, material cost, and bag counts for driveways, garden paths, landscape beds, and drainage work.
Grind Size Chooser Choose a coffee grind size from brew time, taste, and grinder range, with micron bands, dial moves, and a brew trace for repeatable adjustments.
Grit-S Assessment Assess Grit-S responses for a chosen long-term goal, comparing overall, consistency, and perseverance means with item cues and reference gaps.
Growing Degree Days Calculator Calculate growing degree days from pasted weather rows, biofix dates, base/cap settings, and stage thresholds with charts and audit warnings.
Growth Chart Report Generator Build a pediatric growth report from visit rows with percentiles, BMI, height velocity, screening flags, charts, and follow-up guidance.
Growth Percentile Trend Calculator Review a child's height, weight, or BMI percentile path across visits, with WHO/CDC context, band-crossing alerts, charts, and follow-up cues.
Growth Screening Flag Checker Check child growth visits for percentile drift, corrected age, height velocity, adiposity, and family-height flags with triage guidance.
Growth Velocity Calculator Calculate child growth velocity from height or weight visit rows, compare each interval with age-stage bands, and flag spacing, streak, and drift concerns.
Growth Z-Score Calculator Check a child's growth z-score from height, weight, or BMI with WHO/CDC chart selection, percentile context, and preterm age correction.
Guided Reading Groups Planner Plan guided reading groups from roster data, text inventory, and weekly slots, then review group drafts, rotation load, and needs checks.
Gutter Cleaning Quote Calculator Build a gutter cleaning quote from measured gutter length, access risk, debris, guards, downspouts, labor cost, margin floor, and job notes.
Gutter Downspout Calculator Plan gutter downspouts from roof drainage area, rainfall intensity, gutter and leader capacity, spacing limits, placement rows, and parts takeoff.
Gzip Compression Checker Check HTTP compression evidence for a URL or pasted headers, including gzip/Brotli selection, cache variation, and byte-savings risk.
Gzip Text Decompressor Decompress gzip, zlib, and raw deflate text locally from Base64, hex, escaped bytes, or files with wrapper checks and byte evidence.
HA Failover Budget Calculator Calculate a high-availability failover budget from probe cadence, promotion, traffic convergence, client tail, validation, and RTO buffer checks.
HA Pair Role Consistency Checker Audit HA pair rows in your browser for active/standby drift, VIP mismatches, stale sync, heartbeat gaps, and priority conflicts with clear failover findings.
HAProxy Backend Config Generator Build an HAProxy backend block from server rows, health checks, balance mode, TLS choices, persistence, and review notes before copying.
HCL Converter Convert HCL or Terraform config in your browser into YAML, JSON, and flat key-value views with path ledgers and schema drift checks.
HEXACO Personality Inventory (HEXACO-60) Assessment Score a HEXACO-60 self-report profile with six-domain means, optional college-sample comparisons, facet snapshots, and item evidence.
HIIT Workout Timer Build a HIIT workout timer with named exercise intervals, warm-up, round recovery, live browser cues, density checks, logs, and load charts.
HMAC Generator Generate HMAC signatures in your browser from text or local files, with SHA, RIPEMD, legacy MD5, byte encodings, prefixes, and match checks.
HPI-Style Bright-Side Personality Proxy Assessment Review HPI-style workstyle traits with a 70-item IPIP proxy, raw scale means, derived signals, and shareable answer evidence.
HTML Boilerplate Generator Generate an HTML starter document with title, language, metadata, asset paths, warnings, and copy-ready head or full-page markup.
HTML Entity Lookup Find the right HTML entity for a symbol, name, or code point, with alias checks, Unicode bytes, and paste forms for HTML, CSS, JavaScript, and URLs.
HTML Escape and Unescape Tool Escape HTML snippets in your browser or decode entities back to text with context profiles, pass-by-pass logs, and copy-safety warnings.
HTML Minifier Minify HTML in your browser, compare byte savings, and review spacing, comments, raw-text blocks, and attribute risks before copying.
HTML Tag Stripper Turn HTML fragments, emails, or pages into browser-local plain text with spacing controls, safe URL checks, image-alt handling, and review tables.
HTML Unescaper Decode escaped HTML text or small files in your browser, inspect each entity change, and flag unresolved or script-shaped output.
HTML to JSX Converter Turn pasted or loaded HTML and SVG into JSX locally, with React attribute fixes, style objects, event warnings, and migration checks.
HTML to Markdown Converter Convert pasted or loaded HTML into readable Markdown in your browser, with dialect choices, table safeguards, warnings, and reviewable exports.
HTTP Access Latency Log Analyzer Analyze NGINX, Apache, or ALB access logs in your browser, compare endpoint P95/P99 and 5xx signals, and export SLA findings.
HTTP Security Headers Checker Review pasted HTTP response headers for HSTS, CSP, cookies, CORS, cache, and disclosure risks with scoring and remediation cues.
HVAC Sizing Calculator Estimate room or zone cooling capacity from area, height, climate, insulation, sun exposure, occupants, equipment heat, and size-fit bands.
Handyman Quote Calculator Estimate a handyman quote with labor floors, marked-up materials, fees, risk buffer, tax handling, deposits, and contribution checks.
Hash Type Identifier Identify likely hash formats from pasted values or local text files, with cleanup hints, confidence labels, ambiguity checks, and exportable evidence.
Headcount and FTE Calculator Calculate headcount and FTE from weekly staff rows, contractor rules, and caps, then compare roster capacity by group with checks.
Heart Rate (HR) Zones Calculator Calculate heart-rate zones from age, measured max HR, or heart-rate reserve, then compare formulas, current pulse, and session minutes.
Heart Rate Variability (HRV) Resonance Finder Estimate an HRV resonance breathing pace from resting inputs, then review cycle timing, trial windows, comfort warnings, and exportable results.
Heat Pump Savings Calculator Estimate heat pump savings from fuel use, COP or HSPF2, utility rates, incentives, backup heat, and simple payback timing for bids.
Heatsink Thermal Resistance Calculator Size a heat sink from power, ambient, junction limit, interface loss, and airflow context with C/W targets, margins, and charts.
Height-for-Age Percentile Calculator Check a child's height-for-age percentile from age, sex, and length or stature, with z-score, WHO/CDC comparison, and screen margins.
Helm Values Schema Validator Validate values.yaml against values.schema.json, with Helm-style failure details, schema coverage, hygiene warnings, and a CI command snippet.
High School GPA Calculator Calculate high school GPA from transcript rows, compare weighted and unweighted averages, audit course rules, and see target-gap lift paths.
Home EV Charger Install Cost Calculator Estimate home EV charger installation cost from circuit size, route length, panel work, labor, permits, tax, rebates, and bid scenarios.
Home Office Deduction Calculator Compare simplified and actual home office deduction methods with eligibility checks, income limits, expense allocation, and tax effect estimates.
Hostname Naming Standard Checker Audit hostnames, URLs, and CSV rows for DNS-safe syntax, naming regex drift, lowercase policy, required suffixes, and duplicates.
House Wrap Rolls Calculator Estimate house wrap rolls from wall area, roll size, waste, seams, openings, tape, fasteners, and optional material cost checks.
Hreflang Tag Generator Build hreflang clusters from locale URL rows, then copy head tags, sitemap XML, or HTTP headers with audits for self-reference and x-default.
Hypertext Transfer Protocol (HTTP) Header Checker Check a live HTTP URL for response headers, redirect drift, cache rules, cookie flags, CORS exposure, and prioritized hardening fixes.
Hypertext Transfer Protocol (HTTP) Redirect Checker Trace an HTTP redirect chain hop by hop, compare status, security, latency, host handoffs, loop signals, and copy a replayable cURL command.
IAM Policy Permissions Analyzer Analyze IAM policy JSON for wildcard actions, broad resources, sensitive services, and least-privilege findings before approval.
IAM Policy Wildcards Checker Review IAM policy JSON for wildcard permissions, broad principals, negated allows, exception claims, and remediation steps before approval.
INI Converter Convert INI or CFG text in your browser into JSON, YAML, properties, environment-variable text, and normalized INI with parser checks.
IOPS / MBps / GB-per-day Converter Convert storage IOPS, MB/s, Mbps, and GB/day from block size and active hours, then compare ceiling headroom, block pressure, and cloud disk fit.
IP Address to Decimal Converter Convert an IPv4 address or 32-bit integer into decimal, plus hex, binary, mapped IPv6, range labels, and octet-weight checks.
IP Overlap Checker Find overlapping IPv4 CIDR ranges, host-bit fixes, duplicate address counts, and merged coverage blocks before routing or peering work.
IP3 and SFDR Calculator Estimate IP3, IM3 clearance, and SFDR for RF two-tone tests using gain, noise bandwidth, detection margin, and clean-tone limits.
IPIP Personality Inventory (IPIP-NEO-120) Assessment Complete a 120-item IPIP-NEO-120 Big Five assessment with browser-scored raw domain totals, 30 facet scores, charts, and keyed answer evidence.
IPIP Personality Inventory (IPIP-NEO-60) Assessment Complete a 60-item IPIP-NEO-60 Big Five profile with browser-scored domain means, two-item facet clues, profile charts, and answer review exports.
IPsec Overhead Calculator Size an IPsec tunnel by calculating inner MTU, TCP MSS clamp, ESP overhead, NAT-T bytes, and profile-specific padding before rollout.
IPv4 Allocation Planner Plan IPv4 subnets from a parent CIDR, size host requirements, spot alignment gaps, and review fit, headroom, and charts before rollout.
IPv4 Renumbering Planner Plan IPv4 renumbering waves from host mappings, prefix checks, DNS and DHCP timing, with readiness findings, rollback steps, and exportable runbooks.
IPv4 Subnet Allocation Planner Plan IPv4 subnet allocations from a parent CIDR, size VLSM child networks from host demand, and review gaps, headroom, gateways, and overflow.
IPv4 Supernet Calculator Summarize IPv4 CIDR lists into a single cover route or exact aggregate set, with overlap cleanup, exposure warnings, charts, and exports.
IPv6 Address Compressor / Expander Convert one IPv6 value between compressed and expanded forms, with hextet, binary, reverse-DNS, prefix, zone, and dotted-tail checks.
IPv6 Address and Subnet Calculator Plan an IPv6 subnet from an address or CIDR, with canonical ranges, child-prefix counts, reverse-DNS alignment, and EUI-64 samples.
IPv6 Prefix Plan Calculator Plan IPv6 site and LAN prefixes from a parent CIDR with fit checks, /64 warnings, bit-budget charts, and copyable ledger outputs.
Iced Coffee Flash Brew Calculator Plan a flash-brew iced coffee recipe by balancing coffee dose, hot water, brew ice, retained liquid, pour timing, and chill guardrails.
Ideal Weight Calculator Estimate adult ideal weight from Devine, Hamwi, Robinson, and Miller formulas, then compare the result with a BMI-based healthy-weight corridor.
Image Background Remover Remove simple image backgrounds in your browser, review mask warnings and coverage, then download a transparent PNG for product photos or mockups.
Image Compressor Compress an image in your browser, compare size and quality changes, and control resize, format, EXIF, and target-size choices before download.
Image Cropper Crop an image in your browser with exact source-pixel framing, aspect-ratio presets, upscaling checks, and PNG, JPEG, or WebP output.
Image Format Converter Convert one image in your browser with resize, transparency, byte-size comparison, and format warnings before downloading the result.
Image Metadata Stripper Strip hidden image metadata in your browser, compare source and clean findings, and download a fresh JPEG, PNG, or WebP copy.
Image Resizer Resize one image in your browser with side-by-side preview, fit, crop, padding, quality, size cap, and no-upscale checks before download.
Image to Base64 Encoder Encode one image into Base64, Data URI, JSON string, and embed snippets while checking size, optimization, SVG, and inline delivery tradeoffs.
Impedance Calculator Calculate series RLC impedance from reactance or component values, then check magnitude, phase, power factor, RMS current, and phasor direction.
Incident Action Items Tracker Turn incident action rows into an owner follow-up ledger with due-date states, blocker warnings, missing-field checks, and charted workload.
Incident MTTx Metrics Calculator Calculate incident MTTD, MTTA, MTTC, and MTTR from lifecycle CSV rows, with target breaches, P85 tails, warnings, and stage charts.
Incident Timeline Report Turn incident notes or CSV rows into a sorted timeline, phase handoff, gap chart, and evidence-aware review report for post-incident cleanup.
Income Tax Calculator Estimate income tax from monthly or annual income, compare bracket slices and scenario changes, and note filing limits before planning payments.
Insomnia Severity Index Assessment Score recent insomnia burden with the seven-item ISI, compare published severity bands, and review night, day, and distress drivers.
Insulation Calculator Plan an insulation order from measured area and R-value, with package rounding, target checks, depth estimates, costs, and heat-loss comparison.
Interface Description Standard Checker Check network interface descriptions from config, CSV, or show-output rows for missing evidence, duplicate text, length limits, and cleanup notes.
Intermittent Fasting Planner Plan intermittent fasting windows from a first meal time, with safety ceilings, weekend shifts, hydration reminders, and downloadable schedules.
Internet Protocol (IP) Geolocation Finder Check a public IP, domain, or URL for approximate location, timezone, ASN, reverse DNS, map coordinates, and practical next checks.
Internet Protocol version 4 (IPv4) Subnet Calculator Calculate IPv4 CIDR ranges, usable hosts, masks, wildcard masks, capacity fit, and VLSM splits with special-use range warnings.
Internet Protocol version 4 (IPv4) Subnet Split Calculator Split an IPv4 parent block into equal CIDR child subnets, then compare host capacity, gateway slots, special-use ranges, and forecast charts.
Interpersonal Reactivity Index Assessment Score the 28-item IRI as four empathy facets, compare concern versus distress, and review reverse-keyed item evidence before sharing.
Interview Questions Generator Build a structured interview guide from a role or research brief with tailored questions, follow-ups, scoring anchors, risk signals, and pacing cues.
Inventory Carrying Cost Calculator Estimate inventory carrying cost from stock value and component rates, with margin drag, turnover, benchmark gaps, and reduction-savings views.
Inventory Reorder Point Calculator Calculate a SKU reorder point from demand, lead time, service-level safety stock, inventory position, supplier rounding, and stress checks.
Invoice Due Date Calculator Calculate invoice due dates from Net, EOM, business-day, weekend, and holiday rules, with walkthroughs and overdue status checks.
Invoice Late Fee Calculator Calculate invoice late fees from due dates, grace periods, rates, caps, credits, and rounding, with clause math and AR note output.
Irrigation Runtime Calculator Calculate irrigation runtimes from ETo, target depth, drip flow, soil reserve, efficiency, and cycle-soak checks for a controller-ready schedule.
JSON Converter Turn messy JSON or JSON Lines into clean tables, branch-aware previews, and safer handoff files with path and precision checks in your browser.
JSON Diff Comparator Compare two JSON payloads in your browser, review path-level changes, tune array matching, ignore noisy fields, and export audit evidence.
JSON Formatter Format JSON in your browser into readable, compact, line-stream, and sorted outputs with duplicate-key, number precision, and size checks.
JSON Repair Tool Turn broken JSON-like paste into strict JSON in your browser, with repair evidence for comments, wrappers, loose literals, and precision risks.
JSON Schema Breaking Changes Checker Check JSON Schema changes in your browser, flag required-field, type, enum, constraint, closure, and $ref risks, and export evidence.
JSON Sorter Turn messy JSON into repeatable key order in your browser, with JSONC cleanup, duplicate-key warnings, path review, and array-order controls.
JSON Validator Validate JSON, JSONC, JSON5, or JSON Lines locally, then inspect syntax errors, duplicate keys, precision risks, and formatted output.
JSON to CSV Converter Turn nested JSON or JSON Lines into clean CSV or TSV, with record-path selection, flattened headers, previews, and spreadsheet formula checks.
JSON to TypeScript Converter Turn messy JSON or JSON Lines samples into TypeScript declarations with optional-field evidence, null handling, guard code, and review notes.
JSON-LD Generator Generate JSON-LD structured data for Article, Product, Organization, and FAQ pages with visible-content checks and copy-ready markup.
JSONPath Tester Test JSONPath selectors on pasted or loaded JSON locally, compare matched values with paths and JSON Pointers, and check filter or syntax issues.
JUnit Test Report Analyzer Analyze JUnit XML from CI runs in your browser with pass-rate gates, failure triage, retry clues, skipped cases, and slow-test flags.
JWK To PEM Converter Convert JWK or JWKS keys to SPKI public or PKCS#8 private PEM with local validation, thumbprints, and export-ready key details.
JWT Claims Risk Checker Check a JWT or decoded claims payload for risky issuer, audience, time, header, replay, and data-exposure signals before relying on it.
JWT Decoder Decode a compact or Bearer JWT in your browser, inspect readable claims, and review timing, issuer, audience, signature, and sensitive-claim warnings.
JavaScript Minifier Minify JavaScript in your browser, review syntax feedback and gzip savings, and choose safer settings for modules, comments, and source maps.
Job Satisfaction Survey Assess job satisfaction with the 36-item JSS, then review total and facet bands, reverse scoring, support gaps, charts, and export-ready summaries.
Jumbo Frame Savings Calculator Calculate jumbo-frame packet-rate relief, wire-overhead savings, MTU curve data, and deployment checks from your traffic and path assumptions.
Jungian Type Profile Assessment Answer a 20-item Jungian preference check, then review a four-letter proxy code, pair margins, nearby-code cautions, and a function stack preview.
Junk Removal Quote Calculator Build a junk removal quote from truck fill, material density, access labor, disposal fees, travel, timing, tax, and margin checks.
Kafka Partition Count Calculator Plan Kafka topic partitions from throughput, event rate, consumer parallelism, replication footprint, and rounded broker capacity checks.
Keepalived VRRP Config Generator Generate a Keepalived VRRP config with VIP rows, peer transport, health checks, directive audit, and failover timing before copying.
Kessler Psychological Distress Scale (K10) Assessment Score recent K10 psychological distress with common and Australian bands, high-item flags, factor load charts, exports, and support cues.
Kessler Psychological Distress Scale (K6) Screener Screen recent psychological distress with six K6 questions, 5+ and 13+ cutoffs, item drivers, charts, and in-browser scoring.
Key-Value Config Converter Convert INI, .properties, and .env text into JSON, YAML, or handoff config with a key ledger, duplicate checks, and local parsing.
Knockout Advancement Calculator Work out a two-leg knockout tie from both scores, host order, away-goals rules, extra time, penalties, and live scoreline maps.
Kubernetes Cluster Capacity Calculator Plan a Kubernetes replica ceiling from node allocatable resources, pod requests, surge, PDB, failure drills, zone loss, and pod IP limits.
Kubernetes Deployment Generator Generate Kubernetes Deployment YAML with Service routing, probes, resources, security context, rollout policy, and HPA or PDB review warnings.
Kubernetes Deprecated APIs Checker Find Kubernetes manifests that use APIs removed by a target version, with upgrade blockers, migration queue rows, and replacement snippets.
Kubernetes Events Timeline Analyzer Analyze Kubernetes event output in your browser, grouping Warning reasons, object hot spots, repeat counts, and timeline bursts from kubectl text or JSON.
Kubernetes NetworkPolicy Generator Build Kubernetes NetworkPolicy YAML from pod selectors and ingress or egress allow rows, with peer checks, rollout commands, and a flow map.
Kubernetes Pod Security Context Checker Check Kubernetes workload YAML for risky securityContext settings, inherited pod defaults, Pod Security blockers, and remediation patch cues.
Kubernetes Resource Requests Checker Check Kubernetes manifests for missing CPU, memory, and storage requests, invalid limits, QoS clues, and scheduler footprint gaps.
Kubernetes Upgrade Skew Calculator Check Kubernetes version skew before a minor upgrade, including API server HA windows, node lag, kubectl fit, staged hops, and blockers.
LACP Bundle Capacity Calculator Calculate LACP bundle capacity after failed links, reserve, and hash efficiency, with headroom, failure tolerance, and single-flow risk.
LED Savings Calculator Compare old lighting with LED replacements, estimate annual bill savings, payback, lifetime net value, fixture checks, and CO2 impact.
LaTeX Editor Write and check LaTeX equations with live preview, source diagnostics, snippet menus, and reusable code, image, and document exports.
LaTeX Table From CSV Generator Turn CSV, TSV, semicolon, or pipe-delimited rows into LaTeX table code with parsing checks, package notes, and column audit output.
Ladder Reach Calculator Plan ladder size for roof access, wall work, or stepladder jobs with reach margins, base setback, duty-load checks, and setup cautions.
Landed Cost Per Unit Calculator Calculate landed cost per unit from goods value, freight, duty, tax, MPF/HMF, fees, and selling price with margin and pressure checks.
Landscape Rock Coverage Calculator Estimate landscape rock coverage from bed area, depth, density, reserve, supplier units, truck capacity, fabric overlap, and material cost.
Large Language Model (LLM) Usage Cost Calculator Estimate LLM API spend from prompt and output tokens, retries, cache hits, fixed fees, and budget caps with model price comparisons.
Laser Cut Settings Estimator Estimate starter laser cutting power, speed, passes, focus, kerf, and scrap-test checks for common CO2 and diode machine setups.
Late Work Penalty Calculator Check an adjusted late-work grade from course timestamps, grace time, day or hour rules, deduction caps, cutoffs, score floors, and rounding.
Lawn Fertilizer Bags Calculator Plan fertilizer bags for a lawn from label coverage or nitrogen target, with N-P-K rate checks, reserve, bundle rounding, cost, and spread notes.
Lawn Mowing Quote Calculator Estimate a lawn mowing quote from turf area, service frequency, trimming scope, route time, cost floor, and margin guardrails before sending.
Lawn Seed Calculator Plan a grass seed order from lawn area, label rate or bag coverage, pure-live-seed adjustment, whole-bag rounding, and estimated cost.
Lean Body Mass Calculator Estimate lean body mass from height, weight, sex, and body-fat checks, then compare formula spread, FFMI, warnings, and charts.
Learning Quiz Pack Generator Build a repeatable visual quiz pack for flags, map outlines, signal alphabets, and Braille with seeded sheets, answer keys, and coverage checks.
Lens Equivalence Comparator Compare camera lenses across formats, matching framing, depth-of-field look, video crop modes, and practical target lens choices.
Letter Tracing Sheet Generator Make printable letter tracing sheets with custom A-Z ranges, guide lines, formation cues, learner levels, and repeatable worksheet seeds.
Liebowitz Social Anxiety Scale (LSAS-SR) Assessment Assess past-week social anxiety with LSAS-SR fear and avoidance totals, 30/60 screening anchors, profile splits, charts, and browser exports.
Life Orientation Test-Revised (LOT-R) Assessment Score the 10-item LOT-R, including direct optimism, reverse-scored pessimism, filler responses, and a continuous 0 to 24 outlook result.
Load Balancer Failover Time Calculator Model load balancer failover timing from health probes, thresholds, reroute delay, DNS TTL, drain windows, RTO status, and scenarios.
Load Balancer Pool Capacity Calculator Calculate load balancer pool capacity from backend RPS, weights, health, utilization, growth, and N+ reserve with bottleneck cues.
Locus of Control Orientation Proxy Assessment Explore locus-of-control patterns with 12 paired statements, comparing self-direction against chance and powerful-others scores, tilt, and spread.
Log Sampling Rate Calculator Calculate a log sampling rate from event volume, event size, storage target, reserves, bursts, and overhead with keep-policy guidance.
Logic Grid Puzzle Generator Generate reproducible logic grid puzzles with custom categories, seeded clues, uniqueness checks, printable sheets, answer keys, and constraint maps.
Long Division Calculator Calculate long division with exact quotient and remainder checks, decimal continuation, repeat detection, and a step-by-step work table.
Lorem Ipsum Generator Generate repeatable lorem ipsum for mockups with paragraph, sentence, or word targets, tone control, metrics, and copy-ready formats.
Lumber Calculator Calculate lumber boards to buy from finished cuts, stock size, kerf, waste, bundle rounding, and pricing in metric or board-foot units.
MAC Address Details Lookup Look up a MAC address, normalize EUI-48 and EUI-64 forms, and compare vendor evidence with local flag, privacy, and special-use checks.
MAC Address Generator Generate MAC address batches for labs and fixtures with prefixes, local/unicast flag control, seeded replay, uniqueness checks, and exportable results.
MAS-12 Medication Adherence Proxy Assessment Check medication-routine friction across dose-taking, clinician communication, medication knowledge, and daily-life fit with follow-up prompts.
MBTI-Style Type Preference Proxy Assessment Reflect on MBTI-style type preferences with 28 guided prompts, pair margins, close-call flags, flip pressure, and answer exports.
MTA-STS Validator Validate an email domain's MTA-STS TXT record, HTTPS policy, cache window, MX coverage, and policy-host certificate before enforce mode.
MTU MSS Calculator Calculate TCP MSS from path MTU, encapsulation overhead, IP version, and reserve bytes, then check effective MTU and DF ping size.
MX Record Lookup Look up MX records for a domain or mailbox, compare resolver views, catch RFC 7505 conflicts, and review host and mail-policy warnings.
Macrame Cord Length Calculator Plan macrame cord cuts from project size, mount style, knot density, fringe, reserve, and spool length with cut plans and package estimates.
Macro Target Calculator Calculate daily calorie and macro targets from body metrics, activity, goal pace, BMR formula, protein floor, and meal split warnings.
Maintenance Window Conflict Checker Check change schedules for overlapping maintenance windows, blackout hits, owner collisions, and concurrency spikes with review-ready ledgers.
Malaysia PCB Calculator Calculate 2026 Malaysia PCB/MTD from salary, bonus, TP1/TP3, zakat, EPF, and CP38 with payroll audit tables and formula checks.
Malaysia Tax Deductions and Reliefs Calculator Calculate Malaysia resident tax reliefs for YA 2024 or 2025, cap claims and donations, and turn aggregate income into chargeable income.
Map Outlines Quiz Practice recognizing US state, territory, and world country outlines with seeded quiz rounds, score percentages, answer review, and charts.
Marathon Pace Predictor Estimate marathon finish time and even-effort splits from weekly distance, training speed, run frequency, and warning checks.
Marathon Training Schedule Planner Build a marathon training schedule from your race date and current base, with cutback weeks, taper planning, guardrail checks, and calendar exports.
Maritime Signal Flags Quiz Practice International Code of Signals flags with letter, numeral, or mixed quizzes, seeded retakes, score charts, and missed-answer review.
Markdown Previewer Review Markdown before publishing with GFM or CommonMark rendering, raw-HTML handling, safe links, heading anchors, and local exports.
Markdown Table Generator Generate a GitHub-style Markdown table from CSV, TSV, semicolon, or pipe data with header detection, pipe escaping, column audits, and exports.
Markdown to HTML Converter Convert Markdown into reviewable HTML with a sanitized preview, conversion ledger, and raw-HTML or external-link warnings before publishing.
Marking Time Calculator Estimate marking time from submissions, per-item minutes, deadline, daily hours, buffers, batch breaks, warnings, and a daily pace plan.
Markup Calculator Calculate markup, margin, and target list prices from costs, fees, discounts, and rounding rules with break-even and scenario checks.
Maslach Burnout Inventory (MBI) Assessment Assess burnout strain across EE, DP, and PA dimensions, then review band guides, high-burden items, and follow-up cues for work check-ins.
MathML Editor Edit MathML markup with live SVG or native preview, XML syntax and namespace checks, structure metrics, element charts, and clean .mml exports.
Matrix Screensaver Simulator Create a Matrix-style code rain screensaver with live preview, density and glow tuning, fullscreen checks, metrics, and exports.
Maximal Oxygen Uptake (VO2 Max) Calculator Estimate VO2 max from heart-rate, Cooper, 1.5-mile, or Rockport data with METs, absolute oxygen use, warnings, and benchmark bands.
Meditation Timer Plan a meditation sit with a countdown, start and interval bells, live progress, device cue options, schedule tables, charts, and exports.
Meeting Agenda Generator Build a timeboxed meeting agenda from outcomes, topic rows, and decision rules with owner checks, facilitation prompts, and overrun warnings.
Meeting Cost Calculator Estimate meeting cost from attendees, loaded rates, duration, prep, follow-up, recurrence, and right-size scenarios with audit cues.
Meeting Minutes Generator Format meeting notes into structured minutes with attendance, decision logs, action registers, readiness checks, and copyable Markdown.
Meta Tag Generator Generate search and social meta tags from page details, with canonical URL checks, robots warnings, preview image validation, and copy-ready markup.
Microstrip Impedance Calculator Estimate PCB microstrip impedance or solve target trace width from stackup geometry, compare IPC and Hammerstad models, and flag tolerance risks.
Mid-Parental Target Height Calculator Estimate a child's mid-parental target height from biological parent heights, compare formula methods, and read the expected family band.
Mindful Attention Awareness Scale (MAAS-15) Assessment Assess everyday mindful attention with a MAAS-15 mean, review-item cues, reflective lane summaries, charts, and browser-based exports.
Mini-IPIP Big Five Assessment Take a browser-scored Mini-IPIP Big Five assessment with reverse-keyed trait means, profile spread, trait ring, and answer review.
Missing Number Sheet Generator Generate missing-number worksheets with ranges, counting steps, repeatable seeds, printable prompts, answer keys, ledgers, and setup notes.
Mobile Detailing Quote Calculator Build a mobile detailing quote with vehicle size, condition, travel, add-ons, labor cost, margin guard, tax, and customer-ready notes.
Mole Gram Particle Converter Convert grams, moles, and particles through molar mass with exact or classroom Avogadro values, formula steps, lab checks, and scale charts.
Monthly Budget Calculator Plan a monthly budget from take-home income, compare needs, wants, goals, cushion, and emergency runway against guide targets.
Monthly Retainer Capacity Calculator Test monthly retainer capacity before quoting, with safe client slots, response reserve, rollover exposure, effective rates, and margin stress.
Mood and Stress Screener Comparator Compare PHQ-9, GAD-7, DASS, Kessler, PSS, and GDS-15 routes by concern, time, safety, and fit before choosing a first screener.
Morse Code Decoder Decode written Morse into readable text in your browser, check separators and unknown groups, then review timing charts and practice audio.
Morse Code Generator Generate Morse code from text or TXT files with WPM timing, Farnsworth spacing, playback, WAV audio, timeline charts, and unknown-character checks.
Morse Code Quiz Practice International Morse by matching dot-dash prompts to letters or numbers, then review missed patterns with scores, charts, and exports.
Mortgage Calculator Estimate a mortgage payment with escrow, PMI, cash to close, amortization, extra principal savings, and payoff charts for one purchase scenario.
Motorcycle Tire Pressure Calculator Set cold motorcycle tire pressure for solo, passenger, and luggage rides with front/rear targets, safe windows, temperature drift, and add-or-bleed checks.
Moving Labor Hours Calculator Estimate moving labor hours from home size, crew count, stairs, carries, heavy items, drive time, booking rules, and optional quote cost.
Mulch Coverage Calculator Calculate mulch coverage from bed shape, top-up depth, exclusions, bag size, and supplier rules with bulk, bag, cost, and lift-risk estimates.
Multiple Choice Sheet Generator Build multiple-choice worksheets from pasted rows or Aiken blocks, with seeded versions, answer keys, quality checks, and printable exports.
MySQL Slow Query Log Analyzer Analyze MySQL slow query logs in your browser, group repeated SQL shapes, rank slow or scan-heavy queries, and export tuning evidence.
NAICS Code Lookup Find NAICS codes by industry phrase or code, compare 2022 matches with 2017 retired rows, and review hierarchy, change flags, and assignment notes.
NAT Pool Capacity Calculator Size a NAT/SNAT pool from public IPs, user fan-out, reserves, growth, and hot-destination pressure with capacity charts and warnings.
ND Filter Exposure Calculator Calculate ND filter stops from metered and target exposure settings, then compare fixed, stacked, and variable filter choices for stills or video.
NEO PI-R Proxy Assessment Complete a 120-item IPIP NEO-style proxy assessment with raw domain and facet means, reverse-key review, and no official norm claims.
NGINX Proxy Headers Checker Audit an NGINX proxy block for forwarded-header gaps, trust-boundary risks, WebSocket handling, timeout mismatch, and prioritized fixes.
NTP Offset Log Checker Check NTP and chrony peer rows for offset, jitter, reach, stratum, and source-selection risks, with a peer ledger and offset map.
Name Tracing Sheet Generator Create printable name tracing sheets from a roster, tune guide lines and practice patterns, and check long names or dense pages before printing.
Nameserver Health Check Check domain nameserver health with resolver comparison, glue and public-address checks, SOA timer review, DNSSEC clues, and repair steps.
Nanny Payroll Taxes Calculator Estimate 2026 nanny payroll taxes from cash wages, worker category, FICA and FUTA rules, state unemployment, paycheck withholding, and reserve needs.
Nanny Share Cost Calculator Estimate each family's nanny-share budget with shared and solo hours, overtime, host credit, expenses, payroll load, and monthly totals.
NetFlow Top Talkers Analyzer Analyze NetFlow or IPFIX rows to rank top talkers, compare byte, packet, and flow shares, flag parser or egress clues, and export evidence.
Netcat Command Generator Build netcat or ncat commands for authorized connect, listen, scan, TLS, proxy, and transfer tasks with shell-aware quoting and warnings.
Netplan Config Generator Generate Netplan YAML for a static Ubuntu interface with routes, DNS, MAC matching, MTU options, and validation warnings before host changes.
Network Audit Findings Report Turn network audit findings into a prioritized register with owner queues, evidence gaps, escalation status, charts, and export-ready brief wording.
Network Change Plan Report Build a network change plan with readiness gates, rollback checks, run order, residual risk, and a cutover profile for review-ready tickets.
Network Throughput Calculator Estimate network throughput and transfer time from link speed, RTT, packet loss, TCP windows, streams, and packet-rate limits with bottleneck checks.
Nginx Server Block Generator Generate an NGINX server block for static, PHP-FPM, or proxy hosting with TLS redirects, upstream options, warnings, and deployment checks.
Noise Figure Cascade Calculator Calculate RF receiver noise figure from ordered stage gains, passive losses, bandwidth, and SNR targets with Friis terms and sensitivity estimates.
Number Tracing Sheet Generator Build printable number tracing worksheets with bounded ranges, trace-copy layouts, count cues, setup warnings, and repeatable seeded versions.
ONET Interest Profiler-60 (IP-SF) Assessment Rate 60 ONET work activities to build a RIASEC Holland code, compare theme scores, and check task evidence for career exploration.
OAuth Redirect URI Policy Checker Compare registered OAuth redirect URIs with observed requests, then flag exact-match drift, wildcard scope, fragments, and open-redirect clues.
OCR PDF Tool Extract text from scanned or text-native PDFs in your browser, with OCR fallback, page confidence, DPI guards, and review-ready exports.
OSPF Interface Cost Calculator Calculate OSPF interface cost from reference bandwidth and interface speed, compare manual overrides, and flag cost 1 collapse across fast links.
Object Storage Cost Calculator Estimate monthly object storage cost from stored data, object size, requests, retrieval, egress, lifecycle moves, replication, and editable rates.
Observability Event Volume Calculator Estimate retained observability storage from event rate, event size, and retention, then compare compression, replicas, overhead, reserve, and quota.
Observability Ingest Cost Calculator Estimate monthly observability ingest cost from logs, traces, metrics, collector reduction, indexing, retention, discounts, and growth.
Office Cleaning Bid Calculator Build an office cleaning bid from production pace, cleaner-hours, visit frequency, overhead, add-ons, minimum visit floors, and margin checks.
On-call Handover Report Prepare an on-call handover from incident rows, owners, and escalation notes, then catch hot items, missing actions, and risky async notes.
One Rep Max (1RM) Calculator Estimate one-rep max from a completed set, compare seven formulas, and turn the result into rounded training loads and confidence cues.
Online Bomberman Game Play a Bomberman-style maze run, clear enemies, escape through the gate, and review local scores, event logs, score charts, and exports.
Online Breakout Game Play a Breakout-style brick game with preset or custom challenge settings, streak scoring, local best scores, and exportable run records.
Online Clock Check live local, UTC, and world-zone time, compare handoff windows by zone, and copy Unix timestamps or calendar invite text.
Online Digger Game Play a Digger-style tunnel game in your browser, collect emeralds and gold, then review score sources, shots, bag drops, and route pace.
Online File Compressor Compress one local file in your browser, choose ZIP, TAR, GZ, or Brotli output, then review size savings, SHA-256 integrity, and split parts.
Online Pacman Game Play a Pac-Man-style maze run, clear pellets under patrol pressure, and review score, power-chain, fruit, history, and run artifacts.
Online Snake Game Play Snake with wrap or solid walls, chain apples for combo boosts, and compare score, pace, crash cause, timeline, and run history.
Online Space Invaders Game Play a Space Invaders-style browser game with mouse, keyboard, or touch controls, then compare score, accuracy, threat, and saved bests.
Online Tetris Game Play a Tetris-style browser game with speed presets, ghost and hold assists, next-piece previews, touch controls, and run summaries.
Online Tic Tac Toe Game Practice Tic Tac Toe against a computer or local opponent with hints, threat markers, board scores, saved match logs, and streak stats.
Op-Amp Gain Calculator Calculate op-amp gain for common feedback circuits, solve missing resistors, and check rail swing, bandwidth, slew rate, tolerance, and load current.
Open Graph Tag Generator Build Open Graph and X card meta tags from page details, preview images, article data, and crawler warnings before copying head markup.
Open Graph Tag Previewer Preview social share cards from pasted HTML or a public URL, then review Open Graph, X card, image, canonical, and crawler warnings.
OpenAPI Operation Coverage Checker Check OpenAPI operation coverage against test evidence, spot missing or unmatched routes, and turn release-gate gaps into an owner-ready queue.
OpenVPN Client Config Generator Build an OpenVPN client profile from endpoint, routing, authentication, cipher, TLS, and certificate choices with review warnings before import.
Overtime Pay Calculator Calculate gross pay from hourly rate, regular and overtime hours, daily thresholds, premium tiers, rounding, and flat add-ons with audit tables.
Ovulation Calculator Estimate likely ovulation, peak fertile days, next-period dates, and cycle-variation warnings from your last period and cycle history.
PANAS-SF Affect Snapshot Assessment Rate 10 past-week PANAS-SF feeling words, compare Positive and Negative Affect totals, and spot the strongest item signals before sharing.
PDF Compressor Compress a PDF in your browser, compare local rewrite and production-size estimates, and catch image, encryption, or file-limit warnings.
PDF Merger Merge local PDF files in a chosen order, check page totals and size warnings, set output metadata, and download one browser-built document.
PDF Page Deleter Delete pages from a PDF in your browser, verify the keep/delete map, and download a cleaned copy with range, size, and fidelity warnings.
PDF Page Extractor Extract selected PDF pages in your browser, keep typed order or remove repeats, and verify the new file with a manifest and exportable checks.
PDF Page Manager Arrange PDF pages in your browser with typed ranges, rotation, split ZIP packets, source ledgers, page-flow checks, and local downloads.
PDF Page Marking Planner Mark selected PDF pages with visible page numbers or watermarks, check range parsing and placement warnings, and create a browser-side PDF copy.
PDF Page Numberer Add page numbers to a PDF in your browser, choose ranges and label styles, then check placement coordinates before downloading.
PDF Page Reorderer Reorder one local PDF with ranges, reverse or odd-even presets, duplicate controls, and a manifest for checking the rebuilt file.
PDF Password Workflow Planner Generate local PDF open and owner passwords, check entropy, map permission flags, and export redacted handoff notes for later encryption work.
PDF Protector Protect a PDF in your browser with open and owner passwords, qpdf AES encryption, permission profiles, metadata handling, and verification checks.
PDF Redactor Plan PDF redactions in your browser, scan selectable text for targets, flag hidden-data risks, and export evidence without creating a redacted file.
PDF Repair Tool Repair a damaged PDF in your browser, inspect parser and structure warnings, and download a normalized copy when the file can be rebuilt.
PDF Rotator Rotate selected PDF pages locally in your browser, verify page selectors and final turns, and save a corrected copy without sending files.
PDF Signer Add a typed, drawn, or image signature mark to a local PDF, choose placement, and download a visual-only copy with certificate cautions.
PDF Splitter Split a PDF in your browser into custom ranges, one-page files, or fixed-size packets with overlap warnings, a manifest, and ZIP output.
PDF Unlocker Unlock an owner-approved PDF in your browser with a known password or empty-user restriction setting, then download a locally verified copy.
PDF Watermarker Add text watermarks to a PDF in your browser, choose exact pages, tune opacity, rotation, tiling, and download the marked copy.
PDF to File Converter Convert a local PDF to text, rows, page images, slides, or document files with page-range controls, warnings, and local browser processing.
PEM Bundle Extractor Extract PEM blocks from pasted text or files, separate certificates, CSRs, keys, and other labels, and record each item with line spans and SHA-256 hashes.
PTO Accrual Calculator Project PTO balances from accrual rules, used and planned leave, caps, and carryover limits with a period ledger, charts, and policy checks.
PXE Boot Menu Generator Generate PXELINUX, iPXE, and GRUB boot menus from CSV-style boot rows, with default checks, fallback entries, and validation review.
Pace & Speed Converter Convert running pace to speed or speed to pace, then estimate finish times, split checkpoints, and Riegel race projections in km or miles.
Pace Band Generator Build a race pace band from distance, finish time, marker spacing, and pacing strategy, with split tables, drift charts, and exportable plans.
Package Shipping Cost Calculator Estimate parcel shipping cost from weight, dimensions, zone, surcharges, discount, packaging cost, and margin with billable-weight checks.
Packet Capture Size Calculator Estimate packet capture storage from link speed, duration, snap length, format overhead, compression, and reserve checks before a run.
Paint Calculator Estimate room paint from wall measurements, openings, coats, coverage, and waste, then compare exact litres or gallons with rounded purchase amounts.
Painting Quote Calculator Price a painting job from measured area, coats, prep, paint, labor, overhead, margin, tax, and bid checks before sending a quote.
Pallet Load Plan Calculator Build a pallet load plan from carton and pallet dimensions, compare TI-HI height and weight limits, and flag partial pallets and overhang.
Parent Daily Report Generator Create a parent daily report from care notes, meals, rest, activities, and reminders, with pickup-ready wording and exportable ledgers.
Passport Photo Size Lookup Look up passport, visa, and ID photo sizes, then check head-height bands, DPI pixel targets, print-sheet fit, and authority source notes.
Password Strength Calculator Check a password in your browser, compare login and breach crack-time estimates, flag common patterns, and get safer upgrade guidance.
Patch Window Duration Calculator Plan a patch window from device count, batch concurrency, install and reboot time, with fit checks, phase timing, slack, and rollback reserve cues.
Patient Health Questionnaire (PHQ-15) Assessment Score recent PHQ-15 somatic symptoms, see the 0 to 30 burden band, and review top symptom drivers plus body-system patterns for follow-up.
Patient Health Questionnaire (PHQ-9) Assessment Score a PHQ-9 depression screener, map the 0 to 27 severity band, and flag Item 9, function impact, and symptom drivers for follow-up.
Pattern Practice Sheet Generator Create printable repeating-pattern worksheets with AB to ABBA cycles, missing-cell prompts, cut pieces, answer keys, and load checks.
Paver Calculator Calculate how many pavers to order from area, paver size, joint gap, pattern waste, pack rounding, and paver-only cost checks.
Paycheck Calculator Estimate U.S. net pay from hourly, salary, or per-check gross wages with 2026 federal, FICA, state/local, deduction, and warning detail.
Payment Processor Fee Calculator Calculate payment processor fees, effective rates, gross-up charges, and provider comparisons from percentage, fixed, cap, and add-on costs.
Payroll Proration Calculator Calculate prorated gross pay for hires, exits, or unpaid leave, then compare calendar, workday, fixed, and custom divisor methods.
Perceived Stress Scale (PSS-10) Assessment Score a PSS-10 last-month stress check-in, see direct and reverse-scored item contributions, and compare a prior total without cutoff labels.
Percentage Calculator Calculate percent-of, part-of-whole, percent change, value-after-change, and reverse percentages with denominator warnings and sense checks.
Percentile Calculator Calculate percentiles from pasted numbers or local files, compare inclusive, nearest-rank, and exclusive methods, and audit ranks and quartiles.
Personal Carbon Budget Analyzer Estimate an annual carbon budget from home energy, travel, diet, other sources, and offsets with runway and reduction-lever views.
Personal Loan Calculator Estimate personal-loan payments, payoff dates, origination-fee effects, total interest, and prepayment savings with schedules and warnings.
Personality Assessment Hub Compare personality assessment routes by goal, time, output style, and caution level, then review fit scores, heatmap evidence, and guardrails.
Pet Travel Crate Size Calculator Estimate internal pet travel crate dimensions from A/B/C/D body measurements, bedding, shared-crate rules, and proposed crate fit checks.
Phonics Worksheet Generator Build phonics worksheets in your browser from word lists, target sounds, and cues with answer keys, teacher notes, coverage checks, and exports.
Photo Print Resolution Calculator Check whether an image has enough pixels for a print size, with crop reserve, target PPI, size grades, and a PPI sweep chart.
Picture Word Matching Sheet Generator Build printable picture-word matching sheets from cue and word rows, with shuffled word banks, answer keys, teacher checks, and exports.
Ping Results Analyzer Analyze saved ping output for packet loss, RTT spikes, jitter, sequence gaps, and timing charts before writing a network handoff.
Pittsburgh Sleep Quality Index Assessment Assess past-month sleep quality with PSQI scoring, seven component drivers, the >5 review cue, sleep-efficiency math, and observer notes.
Pizza Dough Ball Calculator Calculate pizza dough balls from portion weight, hydration, baker's percentages, yeast type, and proof timing with recipe and handling notes.
PoE Budget Calculator Plan PoE switch capacity from device rows, port count, reserve policy, cable loss, IEEE ceilings, and shedding warnings before a rollout.
Polymeric Sand Calculator Estimate polymeric sand bags from patio area, paver size, joint width, depth, waste, yield, and install checks before buying.
Pomodoro Timer Run a Pomodoro timer with custom focus, break, and goal settings, then track live phases, ETA, schedules, time mix, and exports.
Pool Filter Size Calculator Size a pool filter from pool volume or known flow, compare sand, cartridge, and DE area, and review pump, pipe, and cleaning checks.
Pool Volume Calculator Calculate pool volume in liters and gallons from shape, water depth, displacement, fill rate, turnover, and dose-scaling assumptions.
Port Exposure Summary Checker Turn port exposure rows into a prioritized review list, highlighting public high-risk services, missing owners, and host cleanup scope.
Port List Checker Clean messy port lists in your browser into TCP/UDP target strings, compact ranges, IANA bands, service warnings, and scan-ready outputs.
Post Hole Concrete Calculator Estimate concrete bags for post holes from hole size, post displacement, gravel base, waste margin, bag yield, and whole-bag rounding.
PostgreSQL EXPLAIN Plan Analyzer Review PostgreSQL EXPLAIN text, JSON, or XML for high-cost nodes, row-estimate drift, scans, spills, buffers, and tuning clues.
Postgres Work Mem Calculator Calculate a safer PostgreSQL work_mem setting from RAM, concurrency, hash weighting, and spill targets with memory-pressure warnings.
Posttraumatic Stress Disorder Checklist (PCL-5) Assessment Complete a past-month PCL-5 PTSD checklist, compare 31+ and 33+ screening cut points, and review DSM-5 cluster counts before sharing.
Power Factor Calculator Calculate power factor from kW and kVA, size lagging or leading kVAR correction, and estimate capacitor microfarads with field-check warnings.
Pranayama Sequence Planner Plan a pranayama breathing sequence with timed ratios, prep, rests, cooldown, cue notes, a rehearsal rail, phase ledger, and exports.
Pre-Writing Strokes Sheet Generator Create printable pre-writing stroke sheets with trace-to-independent lanes, direction cues, readiness checks, and repeatable versions.
Pregnancy Caffeine Limit Calculator Track a pregnancy caffeine day total against a 200 mg or custom target, with remaining allowance, serving fit labels, and caution notes.
Pregnancy Due Date Calculator Estimate a pregnancy due date from LMP, conception, IVF transfer, or ultrasound records, then review term windows and care timing.
Pregnancy Weight Gain Range Calculator Calculate pregnancy weight gain from pre-pregnancy BMI, gestational age, singleton or twin pregnancy, and current gain with week-to-date guidance.
Pressure Washer Nozzle Size Calculator Find the right pressure washer nozzle size from pump flow and target pressure, with stocked-tip matching, wear, and component-rating checks.
Pressure Washing Quote Calculator Estimate a pressure washing quote from surface scope, condition, access, labor, chemicals, travel, minimums, and margin checks.
Primary Care PTSD Screen (PC-PTSD-5) Screen PC-PTSD-5 past-month symptoms after the trauma gate, compare 3+ and 4+ cut points, and review endorsed areas for follow-up.
Profit Margin Calculator Check revenue against COGS to see gross margin, markup, target-revenue gaps, net profit view, break-even headroom, and warnings.
Progressive Muscle Relaxation (PMR) Coach Plan a progressive muscle relaxation routine, follow live tense-relax cues, and review timing logs, recovery share, and exportable plans.
Project Budget Burn Calculator Estimate project budget burn from actual spend, commitments, dates, and progress, then check runway, earned-value signals, charts, and review exports.
Project Quote Calculator Price a fixed-fee project from labor, expenses, buffer, overhead, margin, tax, and deposit terms with guardrails for risk and cash timing.
Projected Adult Height Calculator Estimate a child's projected adult height from standing height, age, sex, and parent heights, with scenario ranges and family-band checks.
Prometheus Cardinality Cost Calculator Estimate Prometheus monthly cardinality cost from active series, scrape interval, retention, pricing model, label fan-out, and cleanup savings.
Prometheus Retention Storage Calculator Estimate Prometheus retention storage from active series or samples/sec, with WAL/head reserve, disk headroom checks, and retention.size guidance.
Prometheus Scrape Config Generator Generate a Prometheus scrape config from target rows, labels, timing, limits, and overrides, then review YAML, ledgers, and audit warnings.
Prompt String 1 (PS1) Generator Build a Bash PS1 prompt from ordered tokens, ANSI colors, imported strings, previews, warnings, and setup notes ready for shell testing.
Propane Tank Runtime Calculator Estimate propane tank runtime from tank size, fill level, BTU load, reserve, daily use, and vapor-flow checks for safer planning.
Properties Converter Convert Java .properties text into safer handoff formats, with duplicate-key warnings, path checks, and browser-side parsing.
Protein Intake Calculator Calculate a daily protein target from body weight, goal, training load, diet pattern, meals, and health context, with gap and calorie-share checks.
Proxy Server Checker Check proxy and CDN header evidence from pasted logs or a live request, trace forwarded IP chains, and flag spoofing or trust-hop risks.
Psychological Flexibility Assessment (AAQ-2) Score the seven-item AAQ-II, read the 7 to 49 inflexibility direction, review item support cues, and export a private self-report summary.
Pull Request Cycle Time Calculator Calculate pull request cycle time from PR CSV timestamps, compare pickup delay and slow-tail percentiles, and export ledgers, charts, and JSON.
Punycode IDN Converter Convert Unicode domains and Punycode labels, then check DNS lengths, round trips, script risks, URL parsing, and safe copy targets.
QR Batch Generator Generate QR code image batches from pasted rows or CSV/TXT files, then check duplicates, scan-readiness warnings, manifests, and ZIP exports.
QR Label Sheet Generator Create print-ready QR label sheets from CSV or TXT rows with stock/custom layouts, payload checks, contrast warnings, and local exports.
Qibla Finder Find the Qibla direction from IP, city search, Browser GPS, or manual coordinates with true or magnetic bearing and turn guidance.
QoS Bandwidth Allocation Calculator Plan QoS class bandwidth from a parent rate, then check reserved Mbps, priority share pressure, burst ceilings, and best-effort headroom.
Quarterly Estimated Tax Calculator Estimate your 2026 U.S. federal quarterly tax payments with safe-harbor checks, self-employment tax, due dates, and worksheet exports.
Queue Buffer Delay Calculator Estimate queue buffer delay from buffer size and link rate, compare full-queue and busy-period latency, and find target buffer limits.
Queue Worker Capacity Calculator Size queue workers from arrival rate, throughput, backlog, and drain targets, with utilization headroom, cap warnings, and burn-down charts.
Quick Response (QR) Code Decoder Decode a QR image in your browser, inspect the recovered payload, and review URL, OTP, Wi-Fi, and scan-trace warnings before you act.
Quick Response (QR) Code Generator Build QR codes for links, Wi-Fi, contacts, messages, and events with scan-readiness scoring, logo checks, and downloadable images.
RACI Matrix Generator Build a RACI matrix from pasted activity rows, then review ownership gaps, role-load signals, and handoff notes before sharing.
RADIUS Client Config Generator Generate FreeRADIUS client blocks from NAS rows with local secret generation, address validation, hardening directives, and deployment review.
RADIUS Request Load Calculator Estimate RADIUS request load from access events, accounting updates, retransmits, and server budgets, then compare active-pool and N-1 capacity.
RAID Capacity and Sizing Calculator Plan RAID usable capacity from drive count, layout, spares, overhead, and reserve with target-fit checks, alternatives, and capacity charts.
RAID Performance Calculator Estimate RAID safe IOPS and throughput from drive benchmarks, write mix, spares, controller caps, degraded behavior, and target margin.
RAID Planning Suite Plan a RAID layout with usable capacity, workload headroom, rebuild and URE risk, growth runway, charts, and downloadable reports.
RAID Reliability and MTTDL Calculator Estimate RAID MTTDL from AFR, rebuild time, URE rate, spares, and fleet size with loss probabilities, mitigation options, and tradeoff charts.
RAID Sizing Calculator Calculate RAID and RAID-Z usable capacity with spares, fill headroom, chassis fit checks, drive-size ladders, charts, and rebuild risk estimates.
RAND SF-12 Health Survey (SF-12) Score 12 SF-12 health answers into an inspectable 0-to-100 domain profile with PCS/MCS comparison, charts, and norm-scoring cautions.
RAND SF-36 Health Survey (SF-36) Score RAND SF-36 answers into eight 0-to-100 health domains, compare physical and mental means, and keep the one-year change item separate.
ROI Calculator Compare investment cost, total return, holding period, payback, and benchmark gap with total ROI, annualized ROI, and assumption checks.
RPO/RTO Gap Calculator Compare target and measured RPO/RTO windows, flag data-loss or restore-time misses, and estimate extra change or downtime exposure.
RSA Keys Converter Convert RSA keys between PKCS#1, PKCS#8, encrypted private, and public PEM wrappers with local parsing and fingerprint checks.
RSU and Stock Option Tax Calculator Estimate U.S. taxes for RSU vests, NSO exercises, and ISO sales with AMT, payroll tax, withholding, capital gains, and net cash checks.
Race Finish Time Calculator Calculate race finish time from distance, pace, or speed, then review split clocks, planned stops, cutoff margin, charts, and exports.
Race Finish Time Predictor Estimate a race finish from a prior result, then compare Riegel-based pace, splits, race-day condition scenarios, and exportable charts.
Race Pace and Finish Time Suite Plan race pace from a target time, speed, prior race, or training block with split checkpoints, scenario ranges, pace bands, and charts.
Race Timer Suite Track a race or workout with live lap capture, split-note parsing, pace comparisons, downloadable charts, and a readable summary report.
Rack Power Density Calculator Plan rack power density from device watts, rack units, feed rules, growth, and power factor with headroom, heat load, failover, and density cues.
Random Number Generator Generate random numbers from a defined range, then compare secure or seeded draws with repeat rules, weighted profiles, and bias diagnostics.
Random Picker Pick random names or rows from a list, replay seeded draws, model inclusion odds, and export a clear manifest with weights and group rules.
Range Hood CFM Calculator Calculate range hood CFM from hood width, burner output, kitchen volume, duct velocity, and makeup-air limits before choosing a model.
Rate Limit Backoff Schedule Calculator Plan a rate-limit retry schedule with Retry-After floors, jitter windows, pacing math, timeout checks, and shared-client safety notes.
Rate of Perceived Exertion (RPE) Calculator Convert Borg, CR10, or lifting RPE into intensity bands, scale equivalents, heart-rate cues, charts, and sRPE load for workout review.
Readability Checker Check English readability with grade estimates, reading-ease bands, sentence flags, word-load cues, charts, and browser-side text handling.
Reading Fluency WCPM Calculator Calculate WCPM from words, errors, and elapsed time, then compare reading accuracy, benchmark bands, and progress notes for oral fluency probes.
Reading Level Checker Check an English passage for grade-level readability, target-band fit, formula spread, and sentence or word flags for revision.
Rebar Calculator Estimate a rectangular slab rebar grid with cover-adjusted counts, actual spacing, stock-bar rounding, weight, waste, and cost checks.
Recruiting Pipeline Metrics Calculator Calculate recruiting funnel metrics from applicant counts, with conversion leaks, offer acceptance, time-to-fill checks, charts, and exports.
Redis Memory Size Calculator Calculate Redis maxmemory and host RAM in your browser, including key overhead, TTL metadata, replicas, buffers, and RSS headroom.
Redundant Array of Independent Disks (RAID) Calculator Plan RAID usable capacity from disk sizes, layout, spares, overhead, fill target, and rebuild risk with topology and matchup checks.
Regex Sample Matches Checker Test JavaScript regex patterns against accepted and rejected samples, with whole-line mode, match spans, timeout limits, and exportable verdicts.
Regex Tester Test a JavaScript regex against sample text, inspect match spans and capture groups, catch timeout warnings, and preview replacements.
Relationship Assessment Scale (RAS) Check relationship satisfaction with the seven-item RAS, see how reverse-scored regret and problem items affect the total, and review item cues privately.
Release Cutover Window Calculator Calculate a release cutover window with phase timing, rollback reserve, contingency buffer, gate risk, runway scenarios, and charts for change plans.
Release Notes Generator Turn commits, PR lists, or release bullets into grouped release notes with readiness warnings, change ledgers, and exportable drafts.
Rent Split Calculator Split rent, shared utilities, and deposits across rooms with premium-room weights, rounding checks, fairness notes, and a payment roster.
Rental Property Cash Flow Calculator Estimate rental property cash flow from rent, vacancy, expenses, reserves, debt service, DSCR, cap rate, stress tests, and target rent.
Replication Backlog Time Calculator Estimate replication backlog catch-up time from write rate, current backlog, usable capacity, compression, and target headroom for recovery planning.
Resistor Color Code Decoder Decode resistor color bands into ohms, tolerance limits, temperature drift, and orientation checks for 4-, 5-, and 6-band parts.
Resistor Combination Finder Find resistor combinations for a target value, compare series, parallel, and mixed matches, and check tolerance plus part power stress.
Resolver Policy Difference Comparator Compare DNS-over-HTTPS resolver answers across open, threat-filtered, and family-filtered profiles to spot policy splits, zero-sinks, and DNSSEC drift.
Resonant Frequency Calculator Calculate an LC tank's resonant frequency from L and C, then check tolerance drift, loaded Q, bandwidth, and reactance crossing.
Retaining Wall Block Calculator Calculate retaining wall blocks from wall size and product dimensions, then estimate caps, base gravel, drain rock, pipe, fabric, and material cost.
Retirement Tax Savings Calculator Estimate how a 2026 retirement contribution changes tax savings, paycheck cost, IRA limits, Saver's Credit, employer match, and growth.
Reverse DNS (PTR) Checker Check reverse DNS for an IP or hostname, confirm PTR names resolve forward, compare public resolvers, and spot stale records.
Reverse DNS Zone Generator Generate an IPv4 reverse DNS zone from a CIDR block and PTR rows, with SOA checks, RFC2317 parent records, and review exports.
Revised Dyadic Adjustment Scale (RDAS) Assessment Complete the 14-item RDAS, compare the 0 to 69 relationship adjustment score with the 48 cutoff, and inspect domain and burden cues.
Revision Schedule Planner Build a revision timetable around exam dates, weekly study hours, priorities, and difficulty, then check coverage gaps and load warnings.
Ring Size Converter Convert a ring diameter, circumference, or regional size into US, UK/AU, ISO/EU, and nearby chart matches with fit and delta notes.
Risk Register Generator Build a risk register from pasted CSV or text, score inherent and residual exposure, and queue owner, review, and treatment actions.
Road Signs Quiz Practice US MUTCD road signs by meaning, choose regulatory or warning sets, and review scores, missed answers, charts, and seeded retakes.
Robots.txt Generator Build a robots.txt file from crawler sections, path rules, sitemap hints, and imports, then review crawl-policy warnings before publishing.
Roof Sheathing Sheets Calculator Estimate roof sheathing sheets from footprint or measured area, then review pitch, waste, panel size, H-clips, fasteners, cost, and layout checks.
Roofing Calculator Estimate shingle bundles from roof area, pitch, waste, bundle coverage, accessory lengths, and material cost in metric or imperial units.
Rooftop Solar Fit Calculator Estimate how many solar panels fit on a roof face, then check DC system size, annual kWh, target fit, and setback or shade assumptions.
Rosenberg Self-Esteem Scale (RSES) Assessment Score the Rosenberg Self-Esteem Scale, review direct and reverse-scored items, and compare the 0-to-30 total with guide bands and exports.
Rounding Calculator Round decimal text to places, significant figures, named place values, or custom increments with exact traces, tie-rule checks, and exports.
Rubric Generator Build a rubric matrix from assignment goals, criteria, weights, and levels, then review point allocation, descriptor drafts, and design-audit checks.
Run-Walk Interval Calculator Plan run-walk intervals from distance and segment paces, then compare ratios, cue counts, marker times, finish estimates, and pace charts.
Running Record Accuracy Calculator Calculate running-record accuracy from running words, errors, self-corrections, time, and comprehension, with text bands, pace, cue notes, and exports.
Runway Crosswind Component Calculator Calculate runway crosswind, headwind, tailwind, gust margin, and runway alternatives from wind direction, speed, headings, and pilot limits.
S3 Bucket Policy Public Access Checker Check an S3 bucket policy for public, cross-account, and service-principal exposure with severity findings and remediation cues.
S3 Lifecycle Policy Generator Generate S3 lifecycle policy artifacts with filters, retention checks, JSON output, deployment snippets, and timeline review before applying.
SAML Assertion Timing Checker Check SAML assertion timing from XML or encoded captures, compare clock skew and bearer expiry, and export audit evidence for SSO review.
SAML Metadata Validator Validate SAML metadata XML for entity IDs, SP or IdP roles, endpoint policy, certificate expiry, signature presence, and import blockers.
SARIF Security Findings Analyzer Analyze SARIF logs for release-gate findings, priority rows, rule and file hotspots, severity charts, and fingerprint coverage warnings.
SAS-Style Anxiety Proxy Assessment Check recent anxiety patterns with a disclosed SAS-style proxy that scores 20 items into a 25-to-100 index with domain clues and cutoffs.
SBOM Component Risk Analyzer Review CycloneDX, SPDX, Syft, or CSV SBOM evidence, rank component risk, and separate vulnerability, license, and identity review work.
SCSS to CSS Compiler Compile SCSS, indented Sass, or plain CSS in your browser, then review compiled CSS, source-map output, metrics, and audit warnings.
SHAS-A Adult Health Anxiety Proxy Assessment Check adult health-anxiety patterns with a disclosed 14-item proxy, then review a 0-to-42 score, cutoff context, top area, and cue table.
SLA Availability Calculator Calculate SLA availability from downtime and maintenance rules, then compare remaining budget, burn rate, breach risk, and period checkpoints.
SLO Burn Rate Alerts Generator Generate Prometheus SLO burn-rate alert YAML with multi-window tiers, budget thresholds, routing labels, a chart, and review tables.
SLOAN Personality Code Assessment (Proxy) Build a SLOAN-style personality code from 20 Mini-IPIP answers, with axis strength, swing-letter cautions, spread, and item evidence.
SMIMEA / OPENPGPKEY Lookup Look up SMIMEA or OPENPGPKEY DNS records for a mailbox, check the derived owner name, and compare DNSSEC resolver evidence with payload clues.
SNMP Polling Load Calculator Estimate SNMP polling pressure from devices, OIDs, intervals, retries, SNMPv3 overhead, MTU limits, and poller capacity checks.
SPF Record Generator Build an SPF TXT record from sender inventory, provider includes, IP ranges, A/MX choices, redirect policy, and lookup-budget warnings.
SPF Validation Report Check a domain's SPF TXT record, count DNS lookup risk, trace includes and redirects, and export clear validation notes for mail setup reviews.
SQL Formatter Format pasted SQL or a local file for database review, with dialect-aware layout, caveat warnings, statement metrics, and audit exports.
SQL INSERT Generator Generate SQL INSERT scripts from pasted rows or local CSV files with dialect quoting, literal typing, delimiter detection, and row and column review.
SQLite Manager Inspect a local SQLite file in your browser, run SQL, make careful rowid-table edits, and export rows, SQL dumps, or a database copy.
SRV / NAPTR Service Discovery Check Check SRV and NAPTR routes for SIP, SIPS, XMPP, or LDAP, compare public resolver views, and find broken targets or fallback paths.
SSD Endurance (DWPD/TBW) Calculator Plan SSD endurance from DWPD or TBW, workload writes, reserve, derating, SMART counters, and growth scenarios for replacement timing.
SSH Algorithm Policy Checker Check SSH algorithm evidence against modern, compatibility, or legacy-exception policies with scorecard findings and config patch cues.
SSH Config Snippet Generator Generate OpenSSH Host blocks from CSV host rows, apply defaults and ProxyJump paths, then review identity, host-key, and alias warnings.
SSL CA Matcher Match a TLS leaf certificate to a candidate issuer CA, then review signature proof, DN alignment, CA status, expiry risk, and trust score.
SSL Certificate Chain Checker Check a live host or pasted PEM certificate chain for missing issuers, hostname mismatch, expiry risk, weak crypto, and install-ready PEM.
SSL Checker Check a public hostname's TLS posture with SSL Labs grades, trust-path gaps, legacy protocol flags, expiry risk, and a prioritized fix queue.
SSL Expiry Checker Check SSL/TLS certificate expiry from a live host, with renewal timing, SAN coverage, issuer, serial number, and fingerprint evidence.
SSL Matcher (Certificate, CSR, and Key) Match a TLS certificate to its CSR or RSA private key in your browser with SPKI pins, chain warnings, encrypted-key support, and exports.
SSL OCSP Checker Check OCSP revocation status for a public TLS host or pasted certificate, with responder timestamps, warnings, and replay evidence.
SVG Placeholder Generator Build SVG placeholders with exact canvas sizes, readable labels, contrast warnings, live previews, and copyable HTML or CSS embed snippets.
SWOLF Analyzer Analyze swim split times and stroke counts into SWOLF trends, drift alerts, lap calls, and charts for comparable pool training sets.
Salary Raise Budget Calculator Plan a salary raise budget from employee rows or one salary pool, with proration, employer burden, cap variance, scenarios, and charts.
Sales Tax Calculator Calculate sales tax from pre-tax, tax-included, or receipt tax-line amounts with rounding checks, rate comparisons, charts, and exports.
Sallen-Key Filter Calculator Calculate Sallen-Key low-pass, high-pass, or band-pass stages locally with f0, Q, response curves, preferred values, and headroom checks.
SameSite Cookie Policy Checker Check Set-Cookie headers for SameSite delivery, Secure pairing, prefix rules, and flow risks before SSO, payments, or embeds fail.
Satcom Status Tracker Check satellite TLE age, orbit class, readiness, and optional SatNOGS status before relying on a record for link planning or fleet triage.
Satellite Pass Tracker Forecast satellite passes from a TLE and observer location, then compare elevation, azimuth, timing, charts, and calendar-ready exports.
Satisfaction With Life Scale (SWLS) Assessment Score the five-item SWLS from whole-life ratings, then review the official band, midpoint drift, item anchors, charts, and shareable evidence.
Savings Goal Calculator Calculate a savings goal timeline or monthly deposit from your balance, return assumption, step-ups, and deadline with charts and warnings.
Schengen 90/180 Day Calculator Calculate Schengen 90/180 stay days, test a proposed trip, and review rolling-window warnings from date ranges or passport stamps.
Schutte Self-Report Emotional Intelligence Test (SSEIT) Score the 33-item SSEIT in your browser, with reverse-keyed items, a 33 to 165 total, lane means, charts, and response ledger.
Scissor Skills Sheet Generator Build printable scissor skills worksheets with leveled cut paths, start-stop cues, paste boxes, setup notes, and repeatable seed versions.
Score Distribution Analyzer Analyze score rows or CSV marks as percentages, then compare mean, median, pass rate, grade bands, outliers, and rejected-row checks.
Seating Chart Generator Create a classroom seating chart from a roster with fixed seats, empty desks, repeatable shuffles, group balancing, and placement audit notes.
Secret Pattern Sample Checker Scan configs, logs, and support snippets for secret-like keys, then review masked evidence, provider-pattern hits, entropy cues, and rotation steps.
Secure Password Generator Generate a random password in your browser, tune allowed characters, and compare entropy, crack-time, zxcvbn strength, and history.
Secure Shell (SSH) Client Config Editor Edit an SSH client config in your browser, reorganize Host blocks, test wildcard matches, and review lint, security, and diff reports.
Secure Shell (SSH) Key Fingerprint Checker Check an SSH public key in your browser, compare SHA256 or MD5 fingerprints, and review host-key trust signals before saving records.
Secure Shell (SSH) Public Key Converter Convert one SSH public key between OpenSSH, SSH2, and PEM in the browser, then compare SHA-256 fingerprints, comments, and warnings.
Secure Shell (SSH) Public Key Extractor Extract an SSH public key in your browser from private-key text or public lines, then check fingerprints and build authorized_keys entries.
Secure Sockets Layer (SSL) Certificate Converter Convert PEM, DER, P7B, and PFX certificates in your browser, inspect chain and expiry details, and catch key issues before download.
Secure Sockets Layer (SSL) Certificate Decoder Decode SSL certificates from PEM, DER, or PKCS#7 in your browser, with SAN coverage, validity, fingerprints, usage, and chain checks.
Self-Compassion Scale Short Form (SCS-SF) Assessment Score the 12-item SCS-SF, reverse key harsh-self items, and compare the 1-to-5 mean with pair cues, prior score context, and charts.
SemVer Bump Required Checker Check release notes or commit subjects for the SemVer bump floor, compare a planned version, and flag breaking, feature, fix, and neutral signals.
Semaphore Signals Quiz Practice semaphore A-Z recognition from flag diagrams, replay seeded drills, and review missed letters with a score ledger and accuracy chart.
Sewing Thread Consumption Calculator Estimate garment thread consumption from stitch-class operation rows, wastage, package length, and thread-group costs before ordering cones.
Shape Tracing Sheet Generator Build printable shape tracing worksheets from presets or custom lists, with repeated outlines, color cues, warning checks, and guide tables.
Shoe Size Converter Convert shoe sizes from foot length or regional labels, compare US, UK, EU, JP, CN, KR, MX, and BR results, and spot fit warnings.
Shop Lighting Lumens Calculator Plan shop lighting from room size, task lux, fixture lumens, and loss assumptions with grid count, spacing risk, headroom, and energy cost.
Short Dark Triad (SD3) Assessment Complete the 27-item SD3 self-report, compare the three trait means, and review reverse-scored item evidence without sending answers for scoring.
Sick, Control, One Stone, Fat, Food (SCOFF) Screen SCOFF eating-disorder concerns with five yes/no cues, a 0-to-5 score, the 2+ cut-point, item pattern notes, and follow-up guidance.
Sight Word Practice Sheet Generator Create printable sight-word practice sheets from Dolch, Fry, or custom lists with teacher keys, word ledgers, home notes, and review cues.
Significant Figures Calculator Count significant figures from a written number, inspect each digit's role, resolve trailing-zero ambiguity, and preview rounded values with error checks.
Simple Interest Calculator Calculate simple interest from principal, annual rate, term, and day-count basis, with gross/net maturity totals, checkpoints, and warnings.
Sitemap URL Extractor Extract sitemap URLs from pasted XML, text files, or a public URL with filters, duplicate checks, source evidence, audit warnings, and exports.
Sleep Debt Calculator Calculate recent sleep debt from a 7- or 14-night log, then compare gross deficit, oversleep credit, recovery days, and bedtime targets.
Sleep Hygiene Gap Checker Find sleep-hygiene gaps across caffeine, screens, schedule, naps, room, and light, then rank a focused reset plan for retesting.
Sleep Hygiene Path Planner Plan a sleep-hygiene path from ISI, PSQI, ESS, diary efficiency, sleep debt, and safety cautions with ranked steps and CBT-I window checks.
Sleep Sound Generator Build a sleep sound mix with colored-noise recipes, a 45% safe-volume cap, timers, fade controls, coach notes, and masking charts.
Sleep Window Adjustment Planner Plan fixed-wake sleep-window changes from weekly sleep efficiency values with thresholds, confirmation weeks, stability cues, and safety guidance.
Slug Generator Generate readable URL, file, anchor, and CSS-ready slugs from titles or batch lines with Unicode handling, smart trimming, and paste checks.
Smoke Detector Placement Calculator Plan smoke alarm locations by bedrooms, sleeping areas, and levels, then estimate buy quantity, cost, placement checks, and install notes.
Snapshot Storage Growth Calculator Estimate snapshot reserve capacity from dataset churn, retention, reduction ratio, and headroom, then compare current reserve gaps and stress cases.
Snow Plowing Seasonal Contract Calculator Price or audit a seasonal snow plowing contract with plow events, deicing scope, weather reserve, target margin, caps, and scenario margins.
Social Interaction Anxiety 6-Item Proxy Screener Review social interaction anxiety with a disclosed six-item SIAS-6-style proxy, a 0-to-24 total, 7+ cue context, and export warnings.
Sod Pallet Calculator Calculate sod pallets from measured lawn area, supplier coverage, waste, order policy, delivery weight, and same-day installation checks.
Soil Amendment Calculator Calculate compost, lime, sulfur, optional gypsum, bag counts, staging, and costs from bed size, soil targets, texture, and product strength.
Soil Volume Calculator Calculate soil volume for beds and top-ups, then compare bag counts, bulk ticket rounding, delivery weight, and wheelbarrow loads.
Solar Panel Array Size Calculator Estimate solar panel count from monthly kWh, target offset, sun hours, losses, module watts, and roof-area fit checks before comparing quotes.
Solar Payback Period Calculator Calculate when solar bill savings recover your net upfront cost, with incentive, export-credit, degradation, and annual cash-flow checks.
Sourdough Feeding Schedule Calculator Schedule sourdough starter feedings by ratio, hydration, temperature, flour type, and target peak time with ingredient weights and timing windows.
Spelling Test Generator Create a spelling test sheet from a word list with sentence prompts, answer key, teacher script, word ledger, and printable review output.
Sports Scoreboard Tracker Track a live multi-sport scoreboard with quick scoring buttons, fouls, timeouts, possession, correction flags, and score-flow review.
Spray Foam Kit Coverage Calculator Estimate how many spray foam kits to buy from area, target thickness or R-value, label yield, field loss, waste, reserve, and cost checks.
Square Footage Calculator Calculate square footage for rooms, floors, patios, and material orders with shape math, deductions, waste, package rounding, and cost checks.
Stack Trace Signature Analyzer Group pasted stack traces into stable fingerprints, compare frame evidence, and spot recurring failures while keeping trace text in the browser.
Stair Stringer Calculator Calculate stair stringer rise, run, tread count, board length, throat depth, support spacing, and code-profile checks before cutting lumber.
Standby Power Cost Calculator Estimate standby power cost from measured watts, schedules, electric rates, and cuttable load, with savings, payback, and priority checks.
Starfield Screensaver Simulator Simulate a browser starfield screensaver, tune density, warp, comets, and frame targets, then compare FPS, quality scale, and flight notes.
Static Route Commands Generator Turn route rows into static route add, replace, and delete commands for host and network CLIs with CIDR checks and rollback review.
Steps to Calories Calculator Estimate active calories from steps with weight, step length, pace, terrain, target steps, and uncertainty ranges for walks or runs.
Stimulus Control Steps Planner Plan stimulus-control steps for insomnia with leave-bed cues, a fixed wake anchor, calm reset activities, adherence priorities, and a response chart.
Strength Progression Planner Plan a week-by-week strength block from working load, reps, deload cadence, and plate rounding, with rule checks and a load curve.
Strength Standards Calculator Compare your squat, bench, deadlift, or press 1RM against bodyweight standards with recent-set estimates, target deltas, and source notes.
Stud Wall Framing Calculator Estimate stud wall boards, plates, headers, sills, cut lengths, waste, and material cost from wall dimensions, spacing, and openings.
Subdivision Flags Quiz Practice subdivision flags by country or region, replay seeded drills, add timers or extra choices, and review missed names, timeouts, and charts.
Subfloor Sheets Calculator Estimate subfloor sheet counts from dimensions or measured area, with waste, spare panels, fasteners, adhesive, seam checks, and cost.
Subjective Happiness Scale (SHS) Assessment Assess subjective happiness with the 4-item SHS, then review the 1-to-7 mean, reverse-scored item, balance cue, score arc, and answer pattern.
Subnet Planning Suite Plan IPv4 child subnets from a parent CIDR with reserve-aware host fit, ordered demand packing, prefix charts, address math, and exports.
Substitute Teacher Plan Generator Build a substitute teacher packet with schedule timing, classroom routines, readiness checks, pacing review, and printable handoff text.
Sump Pump Size Calculator Calculate sump pump size from basin inflow, lift, pipe losses, safety margin, pump-curve fit, and cycle checks before choosing a model.
Survey Questions Generator Draft survey questions from a goal, audience, topic lanes, and response mix, then review the ledger, fatigue cues, and type balance.
Switchport Config Generator Build access or trunk switchport CLI for Cisco IOS, NX-OS, or Arista EOS with VLAN-list validation, command notes, and paste-safety warnings.
Switzerland Rail Service Tracker Track Swiss departures and arrivals from public transport data, with station filters, platforms, expected times, route stops, and delay exports.
Syslog Severity Mix Analyzer Analyze syslog and application log samples by severity, error+ share, and noisy emitters with PRI, word, and threshold checks.
Syslog Storage Calculator Size searchable syslog storage from EPS, message size, retention, compression, index overhead, searchable copies, reserve, and disk headroom checks.
TB/TiB/GB/GiB Converter Convert TB, TiB, GB, and GiB through exact bytes, compare drive labels with binary readouts, and copy report-ready capacity notes.
TLS Handshake Load Calculator Estimate TLS handshake CPU load from request rate, connection reuse, full versus resumed costs, surge peaks, core budgets, charts, and warnings.
TLS Handshake Trace Trace a live TLS endpoint, check the negotiated protocol and certificate chain, and separate DNS, TCP, and TLS timing problems.
TLS-RPT Record Validator Validate a TLS-RPT DNS record for a mail domain, check report destinations and policy signals, and build a publish-ready TXT snippet.
TOML Converter Turn TOML into target config formats with parse checks, key-path ledgers, type previews, and schema sketches for safer migrations.
Tab-Separated Values (TSV) Converter Convert TSV or delimiter-separated rows into clean tables and typed exports with header detection, row warnings, and column profiles.
Tabata Workout Timer Build and run a Tabata workout timer with 20/10 presets, editable intervals, exercise rotation, browser cues, a timeline chart, and run logs.
Table Data Converter Turn pasted or local table files into clean Markdown, JSON, HTML, or delimited output with previews, header repair, and formula warnings.
Table Tennis Scoreboard Tracker Keep a table tennis match score with server rotation, deuce and advantage cues, game commits, point-pressure chart, and exportable records.
Tablecloth Size Calculator Calculate tablecloth size from table shape, drop, height, and stock catalogs, with floor-clearance, fit, quantity, and sewing-cut notes.
Tap-Tempo Beats Per Minute (BPM) Calculator Tap a steady rhythm, convert eighth, dotted-quarter, half-note, or quarter-note pulses to BPM, and review jitter, drift, confidence, and timing guides.
Target and Maximum Heart Rate Calculator Calculate target heart-rate bpm from age or a known max HR, compare %Max and Karvonen ranges, and review zones, current HR, and method differences.
Tax Refund Estimator Estimate a U.S. federal tax refund or balance due from wages, credits, withholding, payments, offsets, and safe-harbor checks.
Tax Withholding Calculator Calculate 2026 U.S. federal paycheck withholding, compare your paystub pace with Pub. 15-T, and plan a per-check W-4 adjustment.
Tempo Generator / Metronome Plan a metronome session with tap tempo, meter, swing, accents, ramp blocks, audible playback, and timing tables you can copy or download.
Ten-Frame Counting Sheet Generator Generate printable ten-frame counting sheets for 0 to 20 practice with answer keys, setup tables, seeded mixes, and a frame-fill map.
Ten-Item Personality Inventory (TIPI) Assessment Score a 10-item TIPI Big Five profile, check direct and reverse-keyed answers, and review trait spread with chart and export options.
Tennis Scoreboard Tracker Track a tennis match point by point with server-first calls, advantage or no-ad rules, tiebreaks, pressure cues, and exportable score history.
Terminal Installer Simulator Generate browser-local installer terminal output with package-manager presets, seeded replays, network jitter, progress traces, and exportable logs.
Terraform Plan Summary Analyzer Review Terraform plan JSON or text before apply, with destructive-change gates, drift signals, output-change checks, and provider impact charts.
Terraform Variable Defaults Checker Check pasted Terraform variable blocks for risky defaults, secret-like values, type mismatches, nullable behavior, and prioritized remediation rows.
Test Case Generator Turn a feature workflow into manual, Gherkin, or automation-ready test cases with traceable IDs, boundary coverage, review checks, and exports.
Test Curve Calculator Curve raw test scores, compare class average and band shifts, and audit caps, rounding, skipped rows, and formula effects before posting grades.
Test Score Calculator Calculate a test score from correct, missed, or earned points, then see the percentage, letter band, next-grade gap, and grading chart.
Test Shard Runtime Calculator Estimate CI test shard wall time from suite size, setup cost, timing coverage, runner capacity, target gaps, and runner-minute cost curves.
Text Diff Comparator Compare original and revised text in your browser with ignore options, unified diff output, change tables, warnings, and exportable review data.
Text Encryptor & Decryptor Encrypt or decrypt private text in your browser with AES-GCM defaults, password stretching, portable envelopes, integrity checks, and byte-size breakdowns.
Text Hash Generator Hash exact UTF-8 text in your browser, compare SHA-2, SHA-3, MD5, SHA-1, and RIPEMD-160 digests, with salt rules and saved profiles.
Text Sorter Sort pasted text or TXT/CSV lists in your browser with natural order, cleanup filters, seeded shuffle, duplicate counts, and copy-ready output.
Thinset Bag Calculator Estimate thinset bags from tile area, trowel coverage, waste, back-butter allowance, bag size, spare bags, and wet-area coverage checks.
Thread Pool Saturation Calculator Calculate thread pool saturation from active workers, queue depth, arrival rate, task time, wait percentiles, and capacity scenarios.
Tie Down Strap Capacity Calculator Calculate tie-down strap capacity from cargo weight, length, WLL, securement path, blocking, reserve, and minimum-count rules.
Tile Calculator Calculate tile boxes from measured area, tile size, grout joint, waste, carton count, spares, and price with takeoff tables and waste checks.
Tile Grout Bags Calculator Calculate tile grout bags from area, tile size, joint width, depth, density, waste, and bag size, with sensitivity and lot-ordering checks.
Time Calculator Calculate elapsed time, overnight shifts, break deductions, and added or subtracted clock durations with rounding, charts, and exportable ledgers.
Time Zone Meeting Overlap Calculator Find meeting times across IANA time zones, compare strict work-hour overlap with least-pain fallbacks, and export calendar-ready details.
Time-lapse Plan Calculator Plan a time-lapse shoot from interval, clip length, frame count, storage, battery, and exposure gap checks before setting the camera.
Timecode Duration Calculator Calculate frame-accurate timecode duration from in/out labels with drop-frame validation, endpoint rules, handle frames, and exports.
Tip Calculator Calculate a tip from subtotal, tax, service charges, and split rules, then review receipt checks, rounding notes, charts, and share-ready totals.
Tire Replacement Cost Calculator Estimate out-the-door tire replacement cost with installed totals, taxes, rebates, mileage value, and shop-quote variance checks.
Tire Size Comparison Calculator Compare tire sizes by diameter, width, sidewall, speedometer error, ride-height change, clearance checks, and fitment review bands.
Trace CNAME Alias Chain Trace a hostname's public CNAME path, compare resolver views, and check terminal A, AAAA, MX, TXT, or CAA answers before a DNS cutover.
Traceroute Hops Analyzer Analyze pasted traceroute, tracert, or MTR output into hop evidence, latency-step findings, loss checks, charts, and shareable exports.
Tracing Worksheet Generator Create tracing worksheets for names, letters, numbers, shapes, and pre-writing strokes with guide lines, formation cues, and page estimates.
Trailer Payload Capacity Calculator Check trailer payload capacity from GVWR, empty weight, cargo, fluids, tongue weight, axle rating, tire capacity, reserve, and weakest limit.
Trailer Tongue Weight Calculator Calculate trailer tongue weight from a scale reading or target percent, compare it with the selected band, and check hitch, payload, and load-shift notes.
Transformer Calculator Calculate transformer turns ratio, secondary turns, full-load current, and impedance ratio from RMS voltages, VA rating, phase, and winding turns.
Translation Quote Calculator Build a translation quote from word count, CAT leverage, language pair, deadline pressure, format fees, minimums, margin, tax, and deposit.
Travel Per Diem Calculator Calculate travel per diem from trip dates, lodging rules, M&IE rates, first/last-day proration, provided meals, caps, and daily tables.
UCLA Loneliness Scale-20 (ULS-20) Assessment Score the 20-item UCLA Loneliness Scale with reverse-scored support items, a 20 to 80 total, connection lenses, and exportable answer review.
UCLA Loneliness Scale-8 (ULS-8) Assessment Score the ULS-8 loneliness scale with reverse-scored positive anchors, a 0 to 100 transformed gauge, item cues, and exportable review.
UCLA Loneliness Short Check Score the three-item loneliness short scale from 3 to 9, compare the top cue and spread, and keep browser-only answers framed as a private self-check.
UK Take-Home Pay Calculator Calculate UK take-home pay for 2026/27 with PAYE, NI, pension treatment, student loans, and per-period ledgers for salary offers.
UPS Runtime Calculator Estimate UPS battery runtime from load, watt-hours, efficiency, reserve, and battery health, with shutdown margin and rating checks.
URL Blacklist Status Lookup Check a suspicious URL against Safe Browsing, SURBL, and local risk signals, then review scope-aware verdicts and follow-up links.
URL Encode and Decode Tool Encode or decode URL text by context in your browser, inspect percent escapes and plus-space rules, and catch round-trip issues before copying.
URL Parser Parse a URL or query string into components, query rows, encoding notes, masked sensitive values, a length profile, and a rebuilt review link.
UTM URL Generator Build a GA4 UTM campaign URL with required source, medium, and campaign labels, existing-tag cleanup, channel hints, and hygiene checks.
Unicode Character Lookup Inspect a character, grapheme, code point, or escape, then get Unicode names, U+ values, UTF bytes, normalization changes, and hidden-text warnings.
Uniform Resource Locator (URL) Decoder Decode percent-encoded URLs or text, inspect query pairs and character bytes, clean tracker parameters, and preview JSON or Base64 payloads.
Uniform Resource Locator (URL) Encoder Percent-encode URL components, full links, form values, and paths, then audit escapes with a character map and QR-ready handoff.
Unit Converter Convert measurements across 21 categories with formula notes, equivalent-unit tables, guardrail warnings, and range curves for scale checks.
Unit Price Calculator Compare two package prices on a fair per-unit basis, including multipacks, shared fees, waste assumptions, and break-even shelf limits.
Universally Unique Identifier (UUID) Decoder Decode a UUID into canonical forms, version and variant evidence, timestamps, bit-lane tables, routing notes, and JSON for audits.
Universally Unique Identifier (UUID) Generator Generate UUIDs in your browser for random, name-based, and time-ordered IDs with namespace checks, anatomy details, and history.
Uptime Calculator Calculate uptime budgets from SLA targets, downtime, maintenance policy, and elapsed period with burn pace, target status, charts, and exports.
User Story Generator Draft a user story from role, goal, benefit, and acceptance checks, then review criteria, boundaries, readiness warnings, and exports.
User-Agent Parser Parse a User-Agent string or request header into browser, OS, device, bot, token, and Client Hints evidence for support or log review.
VAT Calculator Calculate VAT from a net price, gross total, or VAT-only amount, with rounding checks, rate-sweep charts, and receipt-ready totals.
VLAN Capacity Calculator Plan VLAN ID capacity from reserved and existing ranges, then test new segment demand, subnet host fit, allocation order, and warnings.
VLAN Config Consistency Checker Check switch VLAN evidence against trunk policy and spot native VLAN drift, missing allowed IDs, inactive VLANs, and VLAN 1 exposure.
VLAN Migration Planner Plan VLAN port migrations from pasted rows, split ports into timed waves, flag trunk and native VLAN risks, and export runbook tables.
VM Migration Time Calculator Estimate VM migration time from memory, disk payload, bandwidth, dirty-page churn, and cutover limits with downtime and convergence checks.
VPN Tunnel Capacity Calculator Estimate VPN tunnel user capacity from line rate, packet overhead, peak demand, gateway caps, and MTU limits with tables and a load curve.
VSWR Return Loss Converter Convert VSWR, return loss, reflection coefficient, and reflected power into RF mismatch notes with mismatch loss, watt estimates, and review guidance.
Video Bitrate Storage Calculator Estimate video storage from bitrate, duration, streams, copies, and headroom, with drive counts, shoot checks, and codec comparisons.
Video Call Sheet Generator Build a video call sheet from schedule and crew rows, then catch call-time, meal, move, safety, and wrap issues before handoff.
Virtual Flowers Generator Design a virtual flower card with custom blooms, colors, message text, repeatable layouts, image exports, and checksum share links.
Virtual Machine Storage Calculator Size VM datastore capacity across thin disks, snapshots, swap, growth, reserves, and raw protection overhead with runway checks.
Virtualization Host Capacity Calculator Plan safe VM capacity for a virtualization cluster with CPU, memory, N+ failover, maintenance reserve, growth runway, and large-VM checks.
Visual IPv4 Subnet Calculator / Splitter Plan IPv4 subnet layouts by splitting and joining CIDR leaf blocks, then check host ranges, broadcast values, and size maps before handoff.
Visual Schedule Cards Generator Create printable visual schedule cards from routine rows with picture cues, optional times, first-then layouts, print checks, and exports.
Vocabulary Matching Sheet Generator Create vocabulary matching worksheets from term-definition pairs with seeded shuffles, answer keys, print-fit checks, parse notes, and exports.
Volleyball Scoreboard Tracker Track a volleyball score with rally points, serve changes, set commits, timeout counts, match-point cues, and a momentum chart.
Voltage Divider Calculator Calculate loaded voltage-divider output, solve R1 or R2 from a target voltage, and check load sag, current, power, tolerance, and E-series fit.
Vulnerability Remediation SLA Calculator Calculate vulnerability remediation SLA due dates from CSV rows, flag overdue or due-soon findings, and build owner-ready queues.
WAN Latency Calculator Estimate WAN round-trip latency from route distance, fiber speed, hops, queues, jitter, and app round trips with target headroom.
WHO-5 Well-Being Assessment Score the WHO-5 well-being check for the last two weeks, see raw and percent totals, and review item patterns, charts, and follow-up cues.
WHOIS / RDAP Lookup Check domain registration data with RDAP-first lookup, WHOIS fallback, renewal timing, status clues, nameservers, contacts, and JSON.
WPDS Historical Proxy Assessment Review a 24-item WPDS historical proxy, compare cue-lane density, and trace which yes/no answers raised flags without using it as a diagnosis.
WWN and NAA Identifier Lookup Lookup WWN and NAA values from SAN paths or logs, normalize the hex, decode NAA family and OUI hints, and flag fragments before use.
Waist to Height Ratio Calculator Calculate waist-to-height ratio from mixed units, compare NICE or legacy bands, and turn half-height cutoffs into waist targets with cautions.
Waist to Hip Ratio Calculator Calculate waist-to-hip ratio from waist and hip measurements, compare sex-specific bands, and see whether tape uncertainty changes the screen.
Wallpaper Calculator Estimate wallpaper rolls from wall and roll dimensions with repeat matching, opening deductions, waste allowance, spare rolls, and cost totals.
Water Heater Size Calculator Size a storage or tankless water heater from peak-hour use, fixture flow, temperature rise, and reserve with FHR, BTU, kW, and fit-map checks.
Water Intake Calculator Plan a daily drink target from total-water references, body weight, climate, exercise, sweat data, serving counts, and safety flags.
Water Softener Size Calculator Size a residential water softener from hardness, iron, softened-water use, reserve, salt dose, regeneration interval, and peak-flow fit.
Water Well Pump Size Calculator Size a residential well pump by GPM and total dynamic head, then check well yield, tank drawdown, curve fit, and candidate pump flow.
Web Server Detector Check a public URL's visible web server, CDN, or proxy using HTTP headers, redirect hops, confidence scores, and origin-hint clues.
WebSocket Connection Capacity Calculator Size a WebSocket pool from sockets, memory, bandwidth, descriptors, and N+ reserve, with bottleneck rows and node gaps.
Wedding Budget Breakdown Calculator Plan a wedding budget with category targets, modeled quotes, reserve-gap warnings, payment forecasts, and per-guest committed cost.
Wedding Invitation Card Generator Design a wedding invitation card with live preview, RSVP QR handoff, signed card links, wording tables, print checks, and PNG or PDF exports.
Weekly Workout Schedule Planner Plan a weekly workout schedule around goals, available days, equipment, and recovery, with audit checks, load charts, and calendar output.
Weight Loss Calculator Plan a weight-change target from body stats, activity, goal date, and calorie floors, with BMI context, pace warnings, and runway charts.
Weight-for-Age Percentile Calculator Calculate a child's weight-for-age percentile with WHO/CDC references, corrected-age handling, z-score context, alert lanes, and follow-up cues.
Weight-for-Length Percentile Calculator Calculate weight-for-length percentile from infant weight and length, compare WHO/CDC references, and review z-scores, source fit, and target weights.
Weighted Grade Calculator Calculate weighted course grades from syllabus percentages or points, then check target averages, dropped rows, grade bands, and weight warnings.
Weighted Rubric Score Calculator Calculate a weighted rubric score from criteria, score levels, and weights, with grade-band lookup, point conversion, and contribution checks.
Wget Command Generator Build a wget command for downloads, API fetches, FTP pulls, or site mirrors with shell-aware quoting, import parsing, exports, and safety warnings.
What Is My Browser Identify your current browser, storage, graphics, privacy, and compatibility signals with share-ready support notes and exposure warnings.
What Is My Internet Protocol (IP) Address? Check your public IP address with IPv4/IPv6 visibility, ASN, reverse DNS, approximate location, and provider agreement clues.
What Is My Screen Resolution Check screen resolution, viewport size, DPR, breakpoint fit, capture dimensions, and density warnings from your current browser session.
Whole-House Water Filter Size Calculator Estimate whole-house filter size from fixture overlap, pressure-drop limits, source-water load, flow headroom, and replacement timing.
Wi-Fi Channel Plan Calculator Plan Wi-Fi AP channel assignments for 2.4, 5, or 6 GHz with DFS and PSC-aware pools, reuse pressure, charts, and exportable tables.
Wifi AP Coverage Capacity Calculator Estimate Wi-Fi AP count from floor area, client load, traffic demand, AP class, and reserve, with coverage, client, and throughput drivers.
Window Cleaning Quote Calculator Build a window cleaning quote from pane count, access, screens, tracks, restoration work, labor hours, margin floors, and downloadable tables.
Window U-value Calculator Compare whole-window U-values for a retrofit, estimate heat-flow reduction by area and temperature difference, and flag target or SHGC limits.
Wire Gauge Calculator Calculate the smallest AWG wire size that meets voltage-drop and ampacity checks from current, run length, voltage, material, and margin.
WireGuard Config Generator Generate WireGuard server and client configs with peer route checks, a topology preview, placeholder-key warnings, and CSV or DOCX exports.
Word Counter Measure drafts, transcripts, and prompts in your browser with word totals, readability scores, repeated phrases, and frequency charts.
Word Scramble Generator Create printable word scramble worksheets from word-and-hint lists with seeded versions, difficulty choices, answer keys, and source checks.
Word Search Generator Generate a word search puzzle from A-Z word lists with seeded layouts, direction controls, play checking, answer keys, and placement reports.
Work and Power Calculator Calculate mechanical work and average power from force, distance, angle, and time, then check sign, units, speed, and the force-angle curve.
Workout Rounds Tracker Track workout rounds from AMRAP, for-time, or interval logs, with rep totals, pace checks, RPE flags, short-round audits, and saved sessions.
Workout Volume Calculator Calculate workout volume from training rows, compare tonnage with hard-set targets, and account for external and bodyweight-equivalent load.
World Health Organization Quality of Life (WHOQOL-BREF) Assess WHOQOL-BREF quality of life across four domains, compare 0-100 scores, and review lower items, support anchors, and shareable results.
XLSX to CSV Converter Convert an Excel workbook sheet to CSV in your browser with no upload, delimiter choices, formula handling, and hidden-row checks.
XML Diff Comparator Compare two XML documents in your browser, catch parse errors, match repeated nodes by key or order, and review changed paths with exportable ledgers.
XPath Tester Test XPath against XML or HTML in your browser, compare node or scalar results, and review namespace checks, match ledgers, and code snippets.
YAML Converter Convert YAML into JSON, env, INI, properties, and path tables with local parsing, document checks, schema review, and scalar-only exports.
YAML Formatter Format YAML in your browser, check parse warnings, path rows, change deltas, and JSON handoff data before replacing source text.
YAML Validator Validate YAML text or files in your browser, catch parser errors and duplicate keys, and inspect document counts, paths, and parsed JSON.
ZFS Capacity Calculator Plan ZFS usable capacity for pool builds from vdev layout, disk size, RAID-Z padding, OpenZFS slop, reserve, and target-fit paths.
cURL Command Generator Build a shell-ready curl command from URL, method, headers, auth, body, retries, and timeouts with quoting, import parsing, and warnings.
chmod Calculator Build chmod modes and shell commands from octal or symbolic permissions, compare baselines, and catch recursive, world-write, and special-bit risks.
dnsmasq DHCP Config Generator Generate a dnsmasq DHCP scope config with pool validation, router and DNS options, static reservations, PXE/TFTP lines, and audit exports.
iptables Rule Generator Build iptables or ip6tables commands from CIDRs, ports, chains, backend choices, and strict review checks before firewall changes.
npm Audit Summary Analyzer Turn npm audit JSON or CI text into a release gate, severity ledger, fix-pressure queue, charts, and remediation handoff notes.
systemd Unit Generator Draft a systemd service unit from command, user, restart, dependency, and hardening choices with review notes and host install checks.

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