The Excel **SQRT** function is a Math and Trigonometry formula that can calculate and return the positive square root of the input value. This is essentially the formula approach to finding square root of a number in Excel. For other methods and finding different exponents, please see: How to find square root in Excel. In this guide, we’re going to show you how to use the Excel **SQRT** function to find the square root of a number, and also go over some tips and error handling methods.

## Supported versions

- All Excel versions

## SQRT Function Syntax

## Arguments

number | The numeric value for which you want to find the square root. Note that this must be a positive number, otherwise you will get an error. |

## Examples

The **SQRT** function only requires a single argument (**number**) to find the square root of a number. Please note that you need to enter a positive number for the **number **argument for the function to work as intended, and you will get an error otherwise. Here, you can use a static value, a cell reference, or the result of another formula. Below is a set of examples on how to use the formula with different input values.

## Tips

- If you want to use a negative number, use the
**ABS**function in combination to make the input value an absolute number, and ignore its sign:

- Alternatively, you can use rational exponents to calculate the square root of a number. For example, if the number is
*x*, the formula would be something like below,

## Issues

- The
**SQRT**function will return a*#NUM!*error if the**number**argument is negative.