Mathematics Calculators

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Averages, geometry, algebra and number theory. Choose a calculator below.

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Pythagorean Theorem Calculator

Find the hypotenuse or a missing leg of a right triangle.

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Quadratic Formula Calculator

Solve ax² + bx + c = 0 and see the roots, including complex roots.

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GCD and LCM Calculator

Find the greatest common divisor and least common multiple of two whole numbers.

About our mathematics calculators

Our mathematics calculators are free, run in your browser and show the formula and a worked example on every page. Results are estimates for general information only and are not professional financial, medical or legal advice.