Area Calculator

Calculate the area of common shapes: rectangle, triangle, circle, trapezoid, parallelogram, and ellipse.

Shape

Select a shape and enter dimensions.

Area Formulas

Shape	Formula
Rectangle	l × w
Triangle	½ × b × h
Circle	πr²
Trapezoid	½(a + b) × h
Parallelogram	b × h
Ellipse	π × a × b

Related Calculators

Rectangle Area Triangle Area Circle Area Perimeter Calculator

Last updated: 2026-08-08