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Formula Plotter

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About

Formula Plotter graphs any y = f(x) you type, live, across x from −10 to 10. Try trig, polynomials, absolute values — anything math.js understands.

How it works

Your expression is parsed and compiled by math.js (no eval), then evaluated once per horizontal pixel and stroked onto a canvas; asymptotes break the line cleanly. Entirely client-side.

Metadata
title
Formula Plotter
description
Type a function of x and watch it plotted live on a grid — sin, polynomials, abs, tan and more. Powered by math.js, in the browser.
canonical
https://kaspirius.com/plotter
updated
Last updated
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Structured data (JSON-LD)
TechArticle

Same as Article, flagged as technical/developer reference material.

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  "headline": "Formula Plotter — function",
  "description": "Type a function of x and watch it plotted live on a grid — sin, polynomials, abs, tan and more. Powered by math.js, in the browser.",
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  "datePublished": "2026-06-18",
  "dateModified": "2026-06-18",
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    "@type": "Person",
    "name": "kaspirius",
    "url": "https://kaspirius.com"
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    "@type": "Organization",
    "name": "kaspirius",
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↖ kaspirius