Nth Root Calculator

About this calculator

This calculator finds the nth root of a number — the value that, when multiplied by itself n times, gives back the original number — covering not just the familiar square root (n=2) and cube root (n=3) but any degree of root, including fractional and negative inputs where applicable.

It's used in algebra and higher math whenever an equation involves fractional exponents or radicals beyond the square root, in engineering formulas that involve exponential growth or decay rates (solving for a periodic rate from a total growth factor often means taking an nth root), and by students checking root-based homework problems that a basic calculator's square-root key can't handle.