Math

Nth Root Calculator

Principal nth root of a positive number (square, cube, or general).

Free to use — no sign-up or login.

Root

This free Nth Root Calculator covers Principal nth root of a positive number (square, cube, or general).

The principal root is exp((1/n) ln x) for x > 0. Related math tools sit beside How it works, with no account required.

Using the Nth Root Calculator

Principal nth root of a positive number (square, cube, or general). Typical inputs are x and Root n. How it works beside the form states the identity the Nth Root Calculator applies.

FAQ

How do I use the Nth Root Calculator?

Open the Nth Root Calculator, fill x and Root n, and read the result. The principal root is exp((1/n) ln x) for x > 0.

What formula does the Nth Root Calculator use?

The Nth Root Calculator uses the identity in How it works. In words: The principal root is exp((1/n) ln x) for x > 0.