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Math

Pythagorean Theorem Calculator

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Solve right triangles with the Pythagorean theorem a² + b² = c². Leave any one side blank to solve for it, with area and perimeter. Free, private, instant.

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All processing happens locally in your browser — nothing is uploaded.

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update v1.0
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How to Use

Enter any two sides (leave the unknown blank). The missing side, area and perimeter are computed.

Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.