Graphing Calculator — Plot Functions Online

Plot up to six functions, pan and zoom, find roots and intersections, see a table of values and save the graph as an image.

Free, with no sign-up and no watermark. The file is processed in your browser and never uploaded.

Plot up to six functions of x on one graph — lines, parabolas, trigonometric, exponential and more. Pan and zoom freely, see where each graph crosses the x-axis and where graphs intersect, read a table of values, and save the graph as an image.

Step by step

  1. Enter functions: Type expressions like 2x + 1, x^2 - 4, sin(x) or sqrt(x) after y =. Use + Add function for more.
  2. Explore: Drag the graph to pan; scroll or use the + / − buttons to zoom; Reset view returns to the start.
  3. Read key points: Roots, y-intercepts and intersections for the visible range are listed under the graph.
  4. Table and export: Set a start and step for the table of values, and press Save PNG to download the graph.

Handy for

Algebra

See how changing coefficients moves a parabola.

Solving visually

Find where two graphs meet to solve equations like x² = 2x + 3.

Trigonometry

Compare sin, cos and tan over a range.

Worksheets

Export a clean graph image for notes or assignments.

Good to know

  • Functions available: sin, cos, tan, sec, csc, cot, their inverses, sinh/cosh/tanh, sqrt, cbrt, abs, exp, ln/log, log10, log2, floor, ceil, round; constants pi and e.

  • Trig functions use radians.

  • Keyboard: focus the graph, then use arrow keys to pan and + / − to zoom.

Questions

Why aren’t some roots listed?

Only points in the current view are searched. Zoom out or pan to include them. Places where a graph touches the axis without crossing it (like x² at 0) may be missed — zoom in to check.

Is anything uploaded?

No. Everything runs in your browser, and anything you save (decks, timetables, results) stays in this browser’s local storage on your device.

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