Area Calculator

Calculate the area of various geometric shapes including rectangles, squares, triangles, circles, trapezoids, parallelograms, ellipses, and regular polygons with precision.

Select Shape

Rectangle Area Calculator

Area = length × width

Unit

Area Result

📐 Area Formulas Reference

Rectangle

A = l × w

length × width

Square

A = s²

side squared

Triangle

A = ½bh

½ × base × height

Circle

A = πr²

π × radius²

Trapezoid

A = ½(a+b)h

½ × (base₁ + base₂) × height

Parallelogram

A = b × h

base × height

Ellipse

A = πab

π × semi-axis a × semi-axis b

Regular Polygon

A = ½pa

½ × perimeter × apothem

✨ Features

🎯

Multiple Shapes

Support for 8 different geometric shapes with accurate formulas

⚡

Real-time Calculation

Instant results as you type with comprehensive validation

📏

Multiple Units

Support for metric and imperial units with automatic conversion