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Area Calculator

Shape
Area
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How to Use

Select a shape and enter the required dimensions. The area is calculated instantly as you type.

Formulas

Rectangle: width x height. Circle: pi x r^2. Triangle: (base x height) / 2. Trapezoid: ((a + b) / 2) x height. Ellipse: pi x a x b.

Privacy

All processing happens in your browser. No data is sent to any server.