Area Calculator

Select Shape:

Length:

Width:

Radius:

Base:

Height:

Base a:

Base b:

Height:

Area

0.00

About Area Calculator

The Area Calculator helps you find the area of various geometric shapes. Whether you're working on a home improvement project, studying geometry, or planning a garden, this calculator provides quick and accurate area measurements.

Area Formulas

Rectangle: Area = Length × Width
Circle: Area = π × Radius²
Triangle: Area = ½ × Base × Height
Trapezoid: Area = ½ × (Base a + Base b) × Height

Common Unit Conversions

1 square meter (m²) = 10.764 square feet (ft²)
1 square foot (ft²) = 144 square inches (in²)
1 square meter (m²) = 10,000 square centimeters (cm²)
1 acre = 4,046.86 square meters (m²)

Tips for Accurate Measurements

Always measure twice to ensure accuracy
Use the same unit for all measurements within a calculation
For irregular shapes, consider breaking them down into simpler shapes
When measuring rooms, account for alcoves, bay windows, and other features