There are a few things you need to know if you want to calculate the square root of a number in Microsoft Excel. First, the square root of a number is simply the result of multiplying the number by itself. So, for example, if you want to find out how much money is in $100, you would divide 100 by itself, and then multiply that answer by 10. This will give you the square root of 100. Next, it’s important to remember that Excel doesn’t always use whole numbers when calculating square roots. In fact, it can sometimes use fractions or decimals when doing this. So if you want to find out how much money is in $100 but have it as an integer (ie., not a fraction), you would need to divide 100 by itself and then multiply that answer by 10 again. This will give you the square root of $100 as an integer value. Finally, be sure to keep track of what type of number yourSquareRoot function returns when called. If your function returns a floating point value (ie., not an integer), then your computer will round down (i.e., make the number smaller) when calculating the square root of a number. If your function returns an integer value (ie., an integer value that is larger than 0 or 1), then your computer will round up (i.e., make the number larger) when calculating the square root of a number.
Calculating the square root of numbers is common in mathematical equations. If you’d like to perform that calculation in Microsoft Excel, you have a couple of ways to do that. We’ll show you how.
What Is a Square Root?
The square root of a number is the value that you multiply by itself to get the original number. For example, the square root of 25 is 5. This is because if you multiply 5 by 5, you get 25.
Calculate Square Root in Excel With the Caret Symbol
One way to find the square root in Excel is to use the ^ (caret) symbol. Use this method if you do not want to use a dedicated square root function (which is our second method below).
To start, first, open your spreadsheet with Microsoft Excel. In your spreadsheet, find the number for which you want to find the square root.
In the spreadsheet, click the cell in which you want to display the resulting square root.
In the selected cell, type the following formula and press Enter. In this formula, replace D2 with the cell where you have your number.
To directly specify your number in the formula, replace D2 in the formula with your number. Like so:
And instantly, Excel will display the resulting square root in your selected cell.
Want to find the sum of squares in Excel? It’s equally easy to do that.
RELATED: How to Calculate the Sum of Squares in Excel
Calculate Square Root in Excel With the SQRT Function
If you’d like to use a function to calculate the square root, use Excel’s dedicated SQRT function for finding square roots. This function retrieves the same result as the method above.
To use the function, first, open your spreadsheet with Microsoft Excel. In the spreadsheet, select the cell in which you want to display the answer.
In the selected cell, enter the following SQRT function and press Enter. In this function, replace D2 with the cell where your number is.
If you wish to directly use the number in the function, then replace D2 with your actual number. Like this:
Excel will calculate the square root and display it in your selected cell.
And that’s all.
Bonus Tip: Insert the Square Root Symbol in Excel
By default, both methods above do not display the square root (√) symbol. To add this symbol, you can use Excel’s UNICHAR function in conjunction with your preferred square root finding method.
If you use the caret symbol method to find the square root, modify your formula as below to add the square root symbol before the answer:
If you use the SQRT function, then modify the function as follows to make it show the square root symbol at the beginning of the answer:
The selected cell now displays the symbol before the resulting square root number.
And those are the ways to quickly get to the square root of a number. Very useful!
Need to calculate something in Excel but not sure what function to use? Excel actually makes it easy to find the functions you need.
RELATED: How to Find the Function You Need in Microsoft Excel
