Body Metrics

Calculate a child’s BMI-for-age percentile from measurements or known BMI and interpret it with WHO or CDC curves, z-scores and P95 checks.

Estimate BMR and TDEE, compare resting-energy formulas, and turn activity and goal assumptions into calorie and macro targets.

Build a balanced barbell plate recipe from the target and actual rack inventory, including the bar and collars with exact or nearby matching.

Estimate body-fat percentage from tape measurements and compare Navy, RFM, and BMI-age methods with lean-mass and uncertainty context.

Calculate adult BMI from height and weight, compare three reference systems, and add waist-to-height and healthy-band weight context.

Compare adult BMI and waist ratios with three body-fat estimates, derived fat and lean mass plus BSA and method-spread warnings.

Plan fat and lean-mass change across a chosen runway, then check the implied weight and nutrition targets against pace and uncertainty.

Calculate body surface area from height and weight, compare five BSA formulas and review protocol choices for weight basis, caps and dosing.

Calculate a preterm baby’s corrected age from the original due date or gestational age, with chronological context and a two-year guide.

Plan optional creatine loading and maintenance from body weight, then check daily grams against label units and available container supply.

Calculate raw or height-normalized FFMI from body-fat or fat-free-mass readings, with sensitivity ranges and goal projections.

Review pediatric growth visits with estimated percentiles, height velocity, BMI flags, and clear prompts to confirm results on official charts.

Review a child's height, weight or BMI percentile path across visits with WHO/CDC references plus band-crossing alerts and trend context.

Screen serial child growth measurements for percentile drift and low height velocity, with age-routed adiposity checks and data-quality flags.

Calculate child height or weight velocity across visits, compare intervals with a clearly labeled screening model, and flag sustained change patterns.

Place a child's height, weight or BMI on age- and sex-specific WHO or CDC curves with z-score, percentile and reference-gate context.

Check a child’s height-for-age percentile and z-score against WHO or CDC references, with measurement-method alignment and uncertainty.

Compare four classic ideal-weight formulas by adult height, then place their spread beside a BMI corridor and optional current-weight context.

Plan daily intermittent fasting windows from a first-meal time with weekend shifts, personal duration ceilings and safety-focused checks.

Estimate adult lean body mass from height and weight, compare four published equations, or use body-fat routes with FFMI and method-spread checks.

Calculate daily calories and protein, carbohydrate, and fat targets from body metrics with selectable energy formulas and planning safeguards.

Estimate a child's family target height from biological parent heights, compare three methods, and read the midpoint within a chosen band.

Estimate one-rep max from a completed set, compare seven named formulas, and build rounded training loads with clear confidence cues.

Compare pregnancy weight gain with BMI-based ranges for one baby or twins, including a week-to-date planning band and clinical cautions.

Estimate a child's projected adult height from current stature and parent heights, with an uncertainty range and sensitivity comparisons.

Plan daily protein grams from body size and training goals with practical meal targets, intake comparisons, and medical-context cautions.

Convert foot length or a regional shoe label into cross-system sizes with adjustable allowance, retail rounding, and fit-drift guidance.

Estimate active calories from steps using distance and pace with body weight, load and terrain plus target steps and an adjustable uncertainty range.

Project a week-by-week strength block with your chosen progression model plus plate rounding, deload rules and clear review flags.

Compare a tested or estimated 1RM with bodyweight-based standards for four barbell lifts, including target gaps and plate-ready loads.

Calculate waist-to-hip ratio from mixed-unit measurements, compare WHO screening cutoffs, and see whether tape uncertainty crosses a boundary.

Calculate waist-to-height ratio from mixed units and compare the unrounded result with current NICE central-adiposity bands and waist targets.

Plan a daily drink target from total-water references and exercise sweat with food-water adjustments, serving counts and safety cautions.

Plan an adult weight change from body measurements and timing with an adaptive calorie estimate plus pace warnings and BMI context.

Calculate a child's weight-for-age percentile from WHO or CDC reference data with corrected-age handling and clear screening limits.

Calculate weight-for-length percentile from WHO or CDC references with measurement correction, source comparison and growth-context cautions.

Calculate workout tonnage and density from logged sets and bodyweight work, then compare weekly hard sets using consistent RPE and load assumptions.