Area Calculator — Calculate Area of Any Shape

Shape

LengthEnter a valid value.

WidthEnter a valid value.

Area

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How to Use This Tool

Select your shape.
Enter the required dimensions.
Click Calculate for the area.

Area Formulas by Shape

Rectangle: Area = Length × Width
Square: Area = Side²
Circle: Area = π × Radius²
Triangle: Area = ½ × Base × Height

Why Area Matters

Area calculations are foundational for countless practical applications — from ordering the right amount of flooring or paint, to calculating land size, to solving geometry problems in school.

Frequently Asked Questions

Does this calculator support more complex shapes?

This covers the four most common basic shapes. For irregular or composite shapes, break them into these basic shapes, calculate each area separately, and add them together.

This calculator is provided for general informational and estimation purposes only. Results should not be treated as professional financial, tax, legal, medical, or engineering advice. Always verify critical calculations with a qualified professional or official source before making decisions.