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Mathematics

Square Root Calculator

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Pro Tip

To check your answer: square it. If r = √x, then r² should equal x exactly. For best results with the Square Root, always cross-verify your inputs against source data before calculating. Running the calculation with slightly varied inputs (sensitivity analysis) helps you understand which parameters have the greatest influence on the output and where measurement precision matters most.

Difficulty:Intermediate

Did you know?

The ancient Babylonians calculated square roots using a method equivalent to Newton's method around 1700 BC — over 3,500 years ago.

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Reviewed May 2026
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