Circle Area Calculator

Calculate the area of a circle from radius, diameter, or circumference with MaiCalcs. Perfect for geometry problems and real-world applications.

Circle Input

Circle Formulas:

• Area: A = πr²

• Circumference: C = 2πr

• Diameter: d = 2r

• Radius from area: r = √(A/π)

Examples:

• r = 5cm → A = 78.54cm²

• d = 10m → A = 78.54m²

• C = 31.42in → A = 78.54in²

Circle Properties

Enter a value to calculate circle properties

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