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Parametric Equation Calculator

Graph a curve defined by separate x(t) and y(t) equations. Choose a parameter interval and resolution, inspect the plotted path, and download sampled coordinates as CSV.

Use t, pi, e, +, −, *, /, ^, parentheses, and sin, cos, tan, sqrt, abs, exp, ln or log. Use * for multiplication; angles are in radians. Example: cos(t).

This is a numerical plot, not a symbolic proof. The line joins finite sample points; discontinuities or asymptotes may need a narrower interval or more samples. Coordinates are bounded for display.

How do I graph a parametric equation?

Enter one expression for x(t) and another for y(t), then choose the start, end and number of samples for t. The graph uses radians. For example, x(t) = cos(t) and y(t) = sin(t) trace a unit circle from 0 to 2π.

Frequently asked questions

How do I graph a parametric equation?

Enter one expression for x(t) and another for y(t), then choose the start, end and number of samples for t. The graph uses radians. For example, x(t) = cos(t) and y(t) = sin(t) trace a unit circle from 0 to 2π.

Are my equations uploaded?

No. Expressions are evaluated locally in your browser with a limited math parser. They are not uploaded or saved by this tool.

What is a parametric equation?

A parametric curve gives each coordinate as a function of a shared parameter, such as x(t) and y(t). Changing t traces points along the curve.

Can I plot a circle with x(t) and y(t)?

Yes. Use x(t) = cos(t), y(t) = sin(t), and a range from 0 to 2π to draw a unit circle.

Can I export the plotted points?

Yes. After plotting, download a CSV with the sampled parameter t and its x and y coordinates. Invalid samples are omitted.