Free Graph Calculator Online

Plot equations, graph functions, compare curves, zoom, pan, export images and generate coordinate tables. Useful for students, teachers, maths revision and visualising equations from AI tools.

Graph Calculator

Enter one equation per line. Examples: y=x^2, y=sin(x), y=a*x^2+b*x+c.

Function Examples

Sliders

Use a, b or c in an equation to activate sliders.

Graph Analysis

Plot a graph to see analysis.

Clicked Point

Click or tap the graph to show coordinates.

Coordinate Table

xy

What Is A Graph Calculator?

A graph calculator is an online tool that plots mathematical equations and functions on a coordinate graph. It helps you visualise linear equations, quadratic equations, trigonometric functions, logarithms, square roots and more.

Supported Functions

  • Linear functions such as y = 2x + 5
  • Quadratic functions such as y = x^2 + 3x + 2
  • Cubic functions such as y = x^3
  • Trigonometric functions such as sin(x), cos(x) and tan(x)
  • Square roots such as sqrt(x)
  • Logarithms such as log(x) and ln(x)
  • Exponential functions such as 2^x
  • Absolute values such as abs(x)

Common Uses For A Graph Calculator

School Maths

Visualise functions for homework, revision and classroom learning.

GCSE and A-Level Revision

Compare linear, quadratic and trigonometric graphs.

AI Generated Equations

Paste equations from ChatGPT, Claude, Gemini or Copilot and see what they look like.

Teaching

Create graph images for lessons, worksheets and explanations.

Engineering and Physics

Plot mathematical relationships and visualise formulas.

Equation Comparison

Graph multiple equations together to compare shapes and intersections visually.

Frequently Asked Questions

Can I graph more than one equation?

Yes. Enter one equation per line and the calculator will plot them together.

Can I graph y = x²?

Yes. Type y = x^2 and the calculator will draw the quadratic curve.

Does this graph calculator support sine and cosine?

Yes. You can use sin(x), cos(x) and tan(x).

Can I download the graph?

Yes. Use the Download PNG button to save the graph image.

Does this tool upload my equations?

No. Graphing runs locally in your browser using JavaScript.

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