AsciiMath Editor

AsciiMath preview

{{ trimmedAscii ? 'Preview, source, MathML, and LaTeX stay in sync.' : 'Start with the sample expression or enter your own AsciiMath.' }}

{{ renderStatusMeta.label }} {{ charCount }} chars {{ lineCount }} lines {{ functionCount }} functions {{ uniqueFunctionCount }} unique Updated {{ renderedAtLabel }}

Editor tools:

Place the cursor first, then choose a structure such as a fraction, root, or matrix.

Symbol menus:

Use for operators, relations, Greek letters, arrows, accents, delimiters, and text tokens.

AsciiMath source:

Examples: sqrt(x), a/b, sum_(i=1)^n, int_0^1 f(x) dx.

Display style:

Choose Display for centered equations or Inline for formulas inside prose.

Start typing to see the equation render.

Loading MathJax…

Preview unavailable. Check your AsciiMath and try again.

Rendering failed. Adjust your AsciiMath input.

Metric	Value	Copy
{{ row.label }}	{{ row.value }}

Summary metrics will appear once you add AsciiMath content.

Function	Count	Share	Copy
{{ row.function }}	{{ row.count }}	{{ row.share }}

Function statistics will appear once your AsciiMath includes named tokens (e.g., sqrt, sum, alpha).

Check	State	Action	Copy
{{ row.check }}	{{ row.state }}	{{ row.action }}

Conversion checks will appear once you add AsciiMath content.

{{ latexSource }}

{{ latexError || 'LaTeX output will appear once the expression can be converted.' }}

MathML not available yet. Render the preview to populate this tab.

{{ trimmedAscii }}

AsciiMath source will appear once you add content.

{{ formattedJson }}

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AsciiMath is a compact text notation for writing mathematical expressions with ordinary keyboard characters. It is useful when you want the source to stay editable, but you also need a rendered equation, structured markup, and export files that can move into notes, documents, worksheets, or review material.

This editor keeps that workflow in one place. Type or paste an expression, choose whether it should render as a block or inline fragment, then use the preview, metrics, function table, conversion audit, and export controls to decide whether the expression is ready to reuse.

AsciiMath source becomes a rendered equation, structured markup, metrics, and export formats.

The main safety habit is to compare two views before you copy anything out: the rendered equation shows whether the notation looks right, while the source and markup tabs show the text and structure you are actually reusing. That helps catch missing grouping, accidental line breaks, or a conversion that is visually close but not the form you intended.

Use the editor for notation drafting and format handoff, not for mathematical proof. It can show structure, counts, and export readiness, but it does not verify that a formula is conceptually correct or that every destination will interpret the copied markup identically.

How to Use This Tool:

Start with the expression itself, then use the status badge and result tabs as checks before exporting.

Enter or paste the expression in AsciiMath source. Short expressions such as BMI = weight/(height^2), sqrt(x), or sum_(i=1)^n i are good first tests.
Use the toolbar, snippet groups, or quick-reference entries to insert common operators, radicals, sums, integrals, accents, Greek letters, and layout patterns at the cursor.
Choose Display style when layout matters. Display is best for a standalone equation; Inline is better for notation that must sit inside a sentence.
Wait for the status to reach Rendered. Idle, Loading, and Rendering are transitional states. Error means the current expression or page environment needs attention before exports should be trusted.
Open Rendered Equation for the visual result, Expression Metrics for counts, Function Usage for recognized named tokens, Conversion Audit for readiness notes, and the markup/source tabs when you need exact reusable text.
Export the rendered equation as SVG, PNG, WebP, JPEG, or PDF when you need an image-style handoff. Copy or download LaTeX, MathML, AsciiMath, CSV, DOCX, or JSON when the next step needs text, structure, or audit data.

Before sharing, make one final pass through the rendered preview, source text, and the specific output format you plan to use. A clean preview is necessary, but the destination format still deserves its own check.

Interpreting Results:

The status badge is the first result to read. Rendered means the preview and core outputs match the current expression. Error means the expression may have unfinished grouping, unsupported notation, or a blocked rendering dependency, so you should fix the issue before using the export buttons.

AsciiMath editor result tabs and what they mean
Result area	What it tells you	What to verify
Rendered Equation	Shows the current expression in display or inline form.	Check grouping, superscripts, subscripts, fractions, radicals, and spacing before exporting.
Expression Metrics	Summarizes display style, render status, characters, lines, recognized functions, and unique functions.	Use it to catch accidental pasted text or unexpected multiline input.
Function Usage	Counts recognized named tokens and each token's share of recognized function use.	Do not treat the table as a full mathematical parse tree.
Conversion Audit	Lists whether the source, render, display style, markup conversion, and function scan are ready.	Review any warning before using copied markup or a downloaded file.
LaTeX, MathML, Source, JSON	Provides reusable textual or structured output derived from the current expression.	Paste into the destination system and confirm that it interprets the expression as intended.

A low function count does not always mean the notation is simple. The function table focuses on recognized word-like tokens such as sqrt, sin, or alpha. Operators, punctuation, most single-letter variables, and some tightly joined large-operator forms may be absent from the table even when they render correctly.

For export choice, start with SVG when the equation will be resized. Use PNG, WebP, JPEG, or PDF when the receiving system only needs a visual result. Use MathML or LaTeX when the next step needs mathematical structure or editable markup rather than a picture.

Technical Details:

The current source text is the authority for the editor. After trimming leading and trailing whitespace, the tool renders that expression, records status, attempts markup conversion, counts source metrics, scans recognized named tokens, and prepares export formats from the same current draft.

Transformation Core:

AsciiMath editor transformation core
Stage	Rule	User-visible result
Source trim	Leading and trailing whitespace are removed for metrics and conversion checks.	Character and line counts reflect the trimmed expression.
Display mode	The same expression is rendered as either a standalone block or an inline fragment.	The visual layout changes, but the source text remains the same.
Markup conversion	A successful render is used to produce structured math markup and a TeX-style text form when available.	The conversion tabs and copy actions become useful only after the render is current.
Function scan	Recognized word-like tokens are counted case-insensitively and grouped by token.	The function table reports count and share, sorted by count and then name.
Export readiness	Visual exports use the rendered equation; text exports use the current source, markup, or tabular summaries.	Use the audit tab to decide whether the selected export is ready.

Formula Core:

Character count is the length of the trimmed source string.

C = length (trim (S))

Line count is zero for an empty trimmed source; otherwise it is one plus the number of newline separators.

L = {\begin{cases} 0 & if trim(S) is empty \\ 1 + newline_count (trim (S)) & otherwise \end{cases}

The function share for a recognized token is its count divided by the total count of all recognized tokens.

{share}_{i} = \frac{{count}_{i}}{\sum_{j = 1}^{n} {count}_{j}} \times 100 %

Output Rules:

AsciiMath output rules and practical limits
Output	Best use	Practical limit
SVG	Scale-independent visual reuse in documents, slides, and design surfaces.	Best for appearance; review the source or markup when editability matters.
PNG, WebP, JPEG	Destinations that accept images but not structured math.	Bitmap files lose mathematical structure.
PDF	A quick page-shaped visual handoff.	Verify the rendered equation before download because the page reflects the current preview.
MathML	Structured mathematical markup for systems that understand MathML.	Destination support varies; confirm after pasting.
LaTeX	Textual math handoff for TeX-oriented workflows.	Converted output may need review before publication.
CSV, DOCX, JSON	Metrics, function usage, audit data, or a structured review record.	These summarize the expression; they do not replace checking the rendered equation.

Worked Examples:

Basic identity check

Enter sin(x)^2 + cos(x)^2 = 1 and keep the display style as a block. The preview should show a standalone identity. The metrics should report one line, and the function table should recognize sin and cos once each, giving each a 50% share of the recognized token count.

Inline Greek-letter fragment

Enter alpha + beta + gamma and switch the display style to inline. The preview becomes compact enough for sentence-level notation. The function table should list three recognized tokens, each counted once, because the Greek names are represented as text in the source.

Large operator with a scan caveat

Enter sum_(i=1)^n i^2 + sqrt(x). The preview should show a summation and a square root, but the function table may emphasize sqrt more than the visual complexity suggests. That is a reminder that the scan is a token-frequency aid, not a complete parse of the expression.

FAQ:

Why does the preview look right but the function table look incomplete?

The preview is based on the expression render, while the function table is a narrower scan for recognized word-like tokens. Use the table as an audit aid, not as proof that every operator or structure was counted.

Can I paste TeX-style notation?

Some familiar TeX-style snippets can be inserted or converted into AsciiMath-style source, and successful renders can produce a TeX-style output. For best results, review the source tab and converted output instead of assuming a full TeX document will map perfectly.

Which export should I choose?

Choose SVG when resizing quality matters, bitmap formats when an image file is required, PDF for a quick page handoff, MathML for structured markup, and LaTeX when the next workflow expects TeX-style math text.

Does a rendered equation prove the math is correct?

No. Rendering proves that the notation could be converted into a visual expression. You still need to verify definitions, units, domains, assumptions, and the mathematical claim itself.

What should I do when the status says Error?

Check the most recent edit for an unfinished group, an unmatched delimiter, or notation that the renderer cannot interpret. If the expression is sensitive or important, simplify it until the preview renders again, then rebuild the expression in smaller steps.

Glossary:

AsciiMath: A text notation for mathematical expressions that uses compact keyboard-friendly symbols and names.
Display style: The choice between rendering an equation as a standalone block or as an inline fragment.
MathML: Structured markup for mathematical notation, designed to preserve more than just the visual appearance of an expression.
Recognized function: A word-like token that the editor identifies as a known mathematical function or symbol name for frequency reporting.
Structured markup: Text that describes the expression's mathematical structure so another compatible system can interpret it.