Area Calculator

Six common shapes, all on one page. Fill in a shape's fields and its area updates right below it.

rectanglewidth × height

Width Height

Area—

squareside²

Side

Area—

circleπ × r²

Radius

Area—

triangle½ × base × height

Base Height

Area—

trapezoid½ × (base 1 + base 2) × height

Base 1 Base 2 Height

Area—

parallelogrambase × height

Base Height

Area—