Graph Calculator
Plot mathematical equations on a grid dynamically offline.
Graph Function
Supported operations:
- Math.sin(x)
- Math.cos(x)
- Math.tan(x)
- x * x (Quadratic)
- Math.abs(x)
Frequently Asked Questions
Is this graph calculator free to use?
Yes, the Graph Calculator is completely free with no login, watermarks, or usage limits.
Does this tool run offline?
Yes. Your function is evaluated and plotted entirely in your browser using canvas — nothing is sent to a server.
What kind of functions can I plot?
You can plot any valid JavaScript expression in terms of x, such as Math.sin(x), Math.cos(x), Math.tan(x), x * x, or Math.abs(x).
Why doesn't my equation show a line?
If the expression contains a syntax error or produces invalid values, those points are silently skipped, so double-check your JavaScript syntax and try Re-plot Function.