▣ CALCULATORS Updated July 25, 2026

Square Root Calculator

Square roots, cube roots, and nth roots of any number.

Number
Root
Result
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How it works

Roots are computed with the IEEE 754 power function, so x^(1/n) is evaluated at double precision. Negative numbers are supported for odd roots only.

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Frequently asked questions

Can it handle negative numbers?

Yes for odd roots such as cube roots. Even roots of negative numbers are not real, so the tool reports an error instead.

How precise is the answer?

Results carry roughly 15 significant digits, the limit of double-precision floating point.

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