The square root of a number is a value which is equal to the number, when multiplied by itself. In this guide, we’re going to show you how to find square root in Excel using two different methods.

## How to find square root using the SQRT function

Excel’s **SQRT** function can calculate and return the square root of a specified number. The function is very easy-to-use and only requires a single argument - the number for which you want to find the square root.

Let’s see how the function works on an example. To calculate the square root of 25, you can use a function like the following:

**SQRT**function in the related guide: Function: SQRT

## “Manual” square root calculation

To calculate the square root of a number “manually”, you can use the exponential version instead (i.e. 25^{1/2}). You can apply this same idea in Excel using a formula like below.

The caret symbol (^) in the formula represents the exponentiation operation. For example, 5 ^ 2 equals 25. On the other hand, using a fraction after the caret symbol (^) represents *rational exponents*.

In the light of this information, we can calculate the *nth* root of a number by placing *n* into rational exponent. For example;

## Calculating cube root of a number

After understanding the logic behind rational exponents, calculating the cube or *nth* root of a number is just as easy. Also, keep in mind that Excel doesn’t have a dedicated function to calculate the cube root.

This application is the same as described in the “manual” method: enter an *n* value into the fraction to find the *nth* root of a specified number. For the cube root calculation, you need to set *n* as *3*. Thus, the formula to find the cube root of *216* would be something like below.