Area Calculator

Choose a rectangle, square, circle, triangle, trapezoid, parallelogram, ellipse, or circular sector and calculate area instantly.

Shape

Length / first value

Width / second value

Third value

Area = 50Choose a shape and enter its dimensions.

How to use this Area Calculator

Calculate area for common two-dimensional shapes. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.