Free Graph Plotter Online

Plot mathematical functions. Interactive zoom and pan. Download as PNG.

f(x) =

x min

x max

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How to use Graph Plotter

Three steps. Instant results.

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Step 1

Enter a mathematical function like y = sin(x).

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Step 2

Adjust the viewing range if necessary.

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Step 3

See the interactive graph plotted instantly.

How Graph Plotter works

Uses math.js to evaluate your function expression at 500 points across the x range, then Plotly.js to render an interactive chart. Supports standard math functions (sin, cos, tan, exp, log, sqrt, abs, etc.) and operators (^, *, /, +, -). The chart supports zoom, pan, and PNG download via the toolbar.

Frequently asked questions

Is this graph plotter free?

Yes. It is free to use with no signup or limits.

Which functions are supported?

Common math functions like sin, cos, tan, exp, log, sqrt, abs, and more.

Can I plot multiple functions?

It plots one expression at a time. Change the expression to plot a new curve.

How many points are plotted?

It samples 500 points across the x range for a smooth curve.

Can I download the graph?

Yes. Use the Plotly toolbar to download the chart as a PNG.

Does it work offline?

The libraries load on first use, so you need internet once. They may be cached for later use.