The free calculator will reduce any number to its principal nth root as well as express it in simplest radical form. The nth root calculator below will also provide a brute force rounded approximation of the principal nth root.

To use the calculator simply type any positive number into the 'enter number' box then type in the 'nth root' you want to find. (Ex: to find the fourth principal root of 32 type '4' into the 'nth root' box and '32' into the 'enter number' box) Hit the 'calculate' button.