Graphing Calculator

Plot functions instantly, compare multiple equations, and inspect intersections with a deterministic graphing engine that runs fully in your browser.

This graphing calculator plots equations in real time in your browser with deterministic parsing and rendering. There are no server calls, no account prompts, and no symbolic algebra layer.

You can compare multiple expressions, pan and zoom quickly, and inspect intersections in the current view.

What you can calculate

  • Linear, polynomial, rational, logarithmic, and trigonometric functions
  • Equation-style input such as x^2=2x+1
  • Functions using sin cos tan log ln sqrt abs exp asin acos atan floor ceil round sign
  • Expressions with constants pi and e and operators + - * / ^

How to use it

  1. Type an expression in any row, for example y=x^2 or sin(x).
  2. Edit rows directly to update the graph in real time. A new row appears automatically as you type.
  3. Use mouse wheel or pinch to zoom. Drag the graph to pan and inspect specific regions.
  4. Use Reset View to return to the default window and Clear All to start again.

Graphing examples to try

  • y=x^2 for a parabola
  • y=2x+1 for a straight line
  • (x^2+1)/(x-1) for a rational function with an asymptote near x=1
  • log(x) for base-10 logarithmic growth
  • tan(x) for periodic branches separated by asymptotes
  • abs(x) for a V-shaped absolute value graph

Graphing calculator FAQ

Does this graphing calculator use JavaScript eval?

No. Expressions are parsed with a deterministic math parser and evaluated client-side without raw eval().

Can I graph multiple equations at once?

Yes. You can enter up to 1000 functions and edit each one live in the left input panel.

How are intersections calculated?

Intersections are found numerically using deterministic interval stepping and bisection root finding within the current view.

Can I use this on mobile?

Yes. The calculator supports touch drag to pan and pinch to zoom, with a mobile-friendly function input layout.

Related calculators

You can also use our Scientific Calculator, Standard Calculator, and Percentage Calculator.