Area Calculator for Common Shapes

Calculate the area for rectangle, square, circle, triangle, trapezoid, and parallelogram.

* Units are as indicated in the inputs.

Step 1: Select Shape & Enter Data

Choose the shape you wish to calculate the area for.

Formulas used:
Rectangle = Length × Width
Square = Side²
Circle = π × (Radius)²
Triangle = ½ × Base × Height
Trapezoid = ½ × (Base1 + Base2) × Height
Parallelogram = Base × Height