The Excel SQRT function is a mathematical function used to calculate the square root of a given number. It is a handy tool for finding the value that, when multiplied by itself, equals the input number.

## Syntax

**=SQRT(number)**

## Arguments

number | The number for which you want to find the square root. |

## How to Use

The SQRT function in Excel is straightforward to use. You need to provide a single argument, which is the number for which you want to find the square root. Here’s how you can use it:

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=SQRT(A1) |

This formula will return the square root of the number in cell A1. Remember to replace “A1” with the cell reference containing your desired number. You can also use a specific value instead of a cell reference.

## Examples

Let’s go through a few examples to see how the SQRT function works:

**Example 1:** Find the square root of 25.

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=SQRT(25) |

The result will be 5 because 5 multiplied by itself equals 25.

**Example 2:** Calculate the square root of a value in cell B2.

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=SQRT(B2) |

If the value in cell B2 is, for instance, 16, the formula will return 4 as the square root.

**Example 3:** You can also use the SQRT function in more complex calculations. For instance, if you want to calculate the hypotenuse of a right triangle given the lengths of its two sides (A and B), you can use the formula:

1 |
=SQRT(A1^2 + B1^2) |

This formula will find the square root of the sum of the squares of A1 and B1, which gives you the length of the hypotenuse.

## Additional Information

The SQRT function is a fundamental mathematical operation in Excel, useful for various applications, including engineering, physics, statistics, and more.

It’s important to note that if the argument you provide is a negative number, Excel will return a #NUM! error, as the square root of a negative number is not a real number. In such cases, you may want to use the ABS function to ensure you’re working with positive numbers before applying the SQRT function.