All tools
Area Calculator
Calculate the area of 12 common shapes. Choose a shape, enter dimensions, and pick your unit.
Choose a shape
m
m
Area
— m2
Formula
Area = length × width
How it works
- 1
Choose a shape
Pick from 12 common shapes using the icon grid at the top of the calculator.
- 2
Enter dimensions
Fill in the labeled inputs for your shape. The diagram shows exactly which measurement goes where.
- 3
Pick your units
Switch between millimeters, centimeters, meters, inches, feet, or yards. Values you've already entered are converted automatically.
- 4
Read your result
The area appears instantly below, along with the formula and step-by-step substitution. Adjust decimals or copy the result with one click.