Plot any function and zoom into the details, right in your browser.

A free online graphing calculator for functions, curves, and quick homework checks, no download and no account, an easy alternative when you just need a browser tab instead of a handheld like a TI-83 or HP Prime.

Functions to graph

Tap a color dot to hide a curve. Up to 4 functions at once.

y =

Supported syntax: + - * / ^ for power, parentheses, and sin cos tan sqrt abs log ln exp pi e. Use x as the variable, for example 2*x^2 - 3*x + 1.

Free & instant

No sign-up, no purchase, and no firmware update, this online graphing calculator works the moment the page loads.

Multiple functions

Graph up to four functions at once, each in its own color, to compare curves the way you would on Desmos or a TI-84.

Works anywhere

Runs in any modern browser on desktop or mobile, so it travels with you without a dedicated TI or HP Prime device.

This tool is a general-purpose function plotter for practice and exploration. If you are taking a proctored exam, check your teacher’s or test provider’s approved calculator list, since policies for handheld models like the TI-83, TI-84, or HP Prime, and for online tools like Desmos, vary by exam.

About

What an online graphing calculator actually does

A graphing calculator turns an equation into a picture, plotting the y-value for every x-value across a visible range so you can see a function’s shape, roots, and behavior at a glance.

How this online graphing calculator works

Type an equation such as x^2 or sin(x), and the tool evaluates it at thousands of points across the visible window to draw a smooth curve. Drag to pan, scroll or pinch to zoom, and use the color dots to compare several functions side by side.

It supports the same core syntax as most graphing tools: powers, roots, trigonometric functions, logarithms, and the constants pi and e, all using x as the variable.

Free Desmos graphing calculator alternative for quick checks

Desmos is a well known free online graphing tool used widely in classrooms for plotting equations and exploring math concepts. This calculator follows the same idea, type an expression and see it graphed instantly, with no account or download needed for a quick plot or homework check.

For advanced features like sliders, tables, or saved graphs, a dedicated tool such as Desmos is worth using directly, this page is built for fast, single-session plotting.

For sliders, tables, and saved graphs, see the official Desmos graphing calculator.

Online tool vs. a handheld TI graphing calculator or HP Prime

Physical devices like the Texas Instruments TI-83 and TI-84 series, and the touchscreen HP Prime, have been standard in classrooms for decades and are approved for many standardized tests. An online graphing calculator trades that offline, exam-approved hardware for instant browser access on any device.

Feature	This calculator	TI-83 / TI-84	HP Prime
Cost	Free	Purchase required	Purchase required
Runs in a browser	Yes	No	No
Needs installation	No	N/A, handheld	N/A, handheld
Commonly exam-approved	Varies by exam	Widely approved	Widely approved
Multiple color-coded functions	Yes	Yes	Yes

FAQs

Common questions

What is an online graphing calculator?+

It is a browser-based tool that plots the graph of a mathematical function you type in, showing its shape, intercepts, and behavior on a coordinate grid, similar in purpose to a free online graphing calculator like Desmos or a handheld TI device.

Is this similar to the Desmos graphing calculator?+

The core idea is the same, type an expression and see it plotted instantly. Desmos is a dedicated, feature-rich tool with sliders, tables, and saved graphs, this page focuses on quick, no-account plotting of up to four functions at once.

Can I use this instead of a TI-83 or TI graphing calculator for an exam?+

That depends entirely on your test’s calculator policy. Many exams specifically approve certain handheld models, such as the TI-83 or TI-84 series, or specifically Desmos, so check with your teacher or test provider before relying on any online tool for a proctored exam.

How is this different from a physical TI-83 or HP Prime graphing calculator?+

A TI-83, TI-84, or HP Prime is a standalone handheld device that works without internet and is often required for standardized testing. This tool runs entirely in your browser, is free, and needs no purchase, but it is not a substitute where a specific handheld model is mandated.

What functions and operators can I graph here?+

You can graph polynomials, roots, and common functions like sine, cosine, tangent, square root, absolute value, natural log, and log base 10, using standard operators for addition, subtraction, multiplication, division, and powers, with x as the variable.

Can I graph more than one function at the same time?+

Yes. You can add up to four functions, each shown in its own color, so you can compare curves, find intersections visually, or check a transformation against the original function.