Math · Functions

Graphing calculator

Plot any expression of x on a pannable, zoomable canvas. Drag to pan, scroll or pinch to zoom.

x: 0.00, y: 0.00

Expressions

Use x as the variable — e.g. sin(x), x^2 - 3, 1/x. Supports + − × ÷ ^, parentheses, sin, cos, tan, log, ln, sqrt, abs, and the constants π and e.
Scientific Calculator Fraction Calculator Percentage Calculator Grade Calculator

Plot functions instantly

The graphing calculator turns an equation into a picture. Type any expression of x — a line, a parabola, a trig wave, a rational function with an asymptote — and it's plotted live on the canvas as you type. Drag anywhere on the graph to pan around, and use the scroll wheel, a pinch gesture, or the on-screen + and − buttons to zoom in on the detail that matters. Add several expressions at once to compare curves side by side, each drawn in its own colour, and use Reset view at any point to snap back to the default window centred on the origin.

How the graph is drawn

This calculator evaluates your expression at a dense set of x-values across the visible window and connects the resulting points into a curve, redrawing as you pan or zoom so the sample points stay dense at any scale. Standard order of operations and function names (sin, cos, log, sqrt, and so on) are supported, and trigonometric functions are evaluated in radians unless you specify otherwise.

Frequently asked questions

Any expression of x, including trig functions, logarithms, square roots, powers, and the constants π and e. You can plot several expressions at once, each on its own line.

Click or touch and drag anywhere on the canvas to pan. Scroll, pinch, or use the + and − buttons to zoom in and out. Use Reset view to return to the default window.

Radians, which is the standard convention for graphing trig functions. Use sin(x), cos(x), and tan(x) directly.