Free · Draw z = f(x, y)

3D Surface Function Plotter

Type a two-variable formula and rotate a smooth 3D surface to inspect peaks, bowls, waves, and saddles.

Live interactive chart
Data stays in this tab
PNG, SVG, and Plotly JSON

Build the formula plot

Change a formula or range. The graph updates here.

Formula for zUse x and y, for example sin(sqrt(x^2 + y^2))x minimumx maximumy minimumy maximumGrid detail12 to 70

Plot titlex-axis labely-axis labelz-axis labelMain colourPlot backgroundShow legend

1,764 points in 1 trace are ready to explore.Drag to zoom. Double-click to reset.

Rows1,764

Plotted1,764

Traces1

Warnings0

Starting the interactive plotPlotly is loading in this browser tab.

Three simple steps

How to use it

Type a formula using x and y.
Choose both axis ranges and grid detail.
Rotate the surface or save a still image.

Your formulas and data stay on this device

Plotly.js and Papa Parse draw the graph inside this browser tab. Bookify does not upload or save the table. Formula tools use a small math parser, not code evaluation. Close the tab and the working copy is gone.