Roots calculator

This calculator works out the nth root of a given number. For example, the square root of 81 is the number that gives 81 when we multiply it by itself. The square root of 81 is therefore 9, because 9 · 9 = 81. Tip: the calculator also supports fractions, so if you want to work out the nth root where $n=\frac{2}{3}$, enter 2/3 in the “which root” field (that is, use a slash).