**How to** **Square Root**** in Excel**

**How to**

**Square Root**

**in Excel**

*Written by co-founder Kasper Langmann, Microsoft Office Specialist.*

Finding the square root of a number in Excel is still a *mystery *to some Excel users.

The truth is, there is more than 1 way you can square root any number in Excel.

However, using the **radical symbol **in the formula bar is not one of them. *In fact, using the square root symbol in a formula has no effect whatsoever.*

In this tutorial, we’ll show you how to square root any number in Excel. As a bonus, we’ll also show you what key combinations you’ll have to press to insert the square root symbol.

Let’s get started! 🔍

**What is a square root?**

The square root of a number *x* is a number *y* that when multiplied by itself, results in that number *x*.

Sounds confusing? 😊

Let’s use an example:

*The square root of 9 is 3. When you multiply 3 by 3, the answer is 9.*

When written in a formulaic structure, the square root is represented by the radical (√) symbol

**√9 = 3**

As you can see, the number which we would like to get the square root of is written under a **radical symbol**. This causes the number whose square root is being computed to be called as **“radicand”**.

It’s important to know how to square root in Excel especially if you’re in the field of architecture, engineering, and statistics.

**Where is the square root symbol?**

When writing equations with square root, the square root is written using the **radical (√) symbol**.

Unfortunately, there’s *no specific key *for it in your keyboard.

If you would like to write the square root symbol in Excel, you have to **press ***‘Alt’ ***+ **** ‘251’**.

Alternately, you can also use the **insert symbol feature **in Excel.

Just go to the *‘Insert’ ***tab **from the tab list.

Then, **press the ***‘Symbol’ ***icon **under the **‘Symbols’ **group.

On the dialogue box, choose **‘Mathematical Operators’ **on *‘Subset’ *and **find the square root symbol**.

Once you do, **press **** ‘Insert’ **and voila!

Take note, however, that you can’t use the radical symbol in Excel the same way you can use the asterisk (*) or the caret (^) symbol in an equation.

*The square root symbol, when entered in a formula bar in Excel, is simply a character. It can’t be used as an operator.*

If you would like to square root a number in Excel, you have to use the **‘SQRT’ **function.

Of course, there are other alternative ways of computing the square root in Excel. However, the ‘SQRT’ function is the fastest way to do.

**How to use the ‘SQRT’ function**

The ‘SQRT’ function is the **resident square root function **in Excel.

Basically, it *returns the square root *of any **positive **number. If you use a negative number as radicand, you’ll get an error.

Here’s the syntax of the ‘SQRT’ function:

**=SQRT (number)**

Let’s use this on the following dataset:

To find the square root, all you have to do is **enter the number value or cell reference **on the ** ‘number’ **parameter:

**Using the ‘POWER’ function for square root**

As stated earlier, there are other ways to compute the square root.

One of them is through the ‘POWER’ function.

From the name itself, this function is **Excel’s exponent function**.

It’s syntax is:

**=POWER (number, power)**

Parameters:

**‘number’**– the base number**‘power’**– the exponent

The trick is to use **“0.5” **as the **exponent **and simply supply the number value or cell reference on the ‘number’ parameter.

Using the ‘POWER’ function, we’ll get the same exact results as the previous section:

**Using an exponent formula for square root**

Lastly, you can also use an exponent formula to get the square root of any number.

This method is simple:

*Use the caret (^) symbol in an equation like how you use the asterisk (*) symbol for multiplication or the forward-slash (/) for division.*

Naturally, you’ll also have to use **“0.5”** as the **exponent**.

From that, you’ll have an exponent formula similar to this one:

**= number ^ 0.5**

Like the previous methods, we’ll get the correct results using this method:

**Wrapping things up…**

As you can see, finding the square root of a number is easy. You can either use a function or an exponent formula. What’s important is that you know how to calculate the square root of any number in Excel.

Feel free to download the exercise file of this tutorial. It contains the same dataset as in the images of this article. That way, you can follow the methods above step-by-step. 😊