How to Calculate Quartiles in Excel

Written by Darlene Antonelli, MA

Last Updated: September 11, 2024 Fact Checked

A quartile is the name for a percentage of data in four parts, or quarters, which is especially helpful for marketing, sales, and teachers scoring tests. Do you have data entered into your Excel sheet and want to see the quartiles (like the top 25%)? This wikiHow will teach you how to calculate quartiles in Excel using a formula.

Quick Steps

Select a cell where you want to display your quartile information.
In the formula box enter =QUARTILE.INC( or =QUARTILE.EXC(.
Enter the range of cells you want to calculate, i.e. A1:A20.
Add , n) where n is 1, 2, 3, or 4, the numbers correlating to quartiles.
Press Enter to run the formula.

Method 1

Method 1 of 2:

Using "QUARTILE.INC"

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1
Open your project in Excel. If you're in Excel, you can go to File > Open or you can right-click the file in your file browser.^{[1]
X
Research source}
- This method works for Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2019-2007, Excel 2019-2011 for Mac, and Excel Starter 2010.
2
Select an empty cell where you want to display your quartile information. This can be anywhere on your spreadsheet.
- For example, you can select cell E7 even if all your data is located in cells A2-A20.
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=QUARTILE.INC(. INC stands for "Inclusive," which will give you results that include 0+100.^{[2]
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Microsoft Support
Technical support and product information from Microsoft.

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4
Select the cells containing your data. You can drag your cursor to select the entire range or you can select the first cell then press CTRL + SHIFT + Down arrow.
- After you've selected the data set, you'll see it entered into your formula. It'll look something like "=QUARTILE.INC(A2:A20". Don't add the closing parentheses because you'll need to add more information to the function.
5
Enter ",1)" to finish the formula. The number after the data range can represent either Q1, Q2, Q3, or Q4, so you can use any number 1-4 in the function instead of 1.
- The function QUARTILE.INC(A2:A20,1) will show you the first quartile (or 25th percentile) of your data set.^{[3]
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  Trustworthy Source
  
  Microsoft Support
  Technical support and product information from Microsoft.
  
  Go to source}
The cell you have selected will display the quartile function result. You can repeat this process using the other quartile function to see the differences.^{[4]
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Research source}

Method 2

Method 2 of 2:

Using "QUARTILE.EXC

Download Article

1
Open your project in Excel. If you're in Excel, you can go to File > Open or you can right-click the file in your file browser.^{[5]
X
Research source}
- This method works for Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2019-2007, Excel 2019-2011 for Mac, and Excel Starter 2010.
2
Select an empty cell where you want to display your quartile information. This can be anywhere on your spreadsheet.
- For example, you can select cell E7 even if all your data is located in cells A2-A20.
=QUARTILE.EXC(. .EXC displays exclusive results, not showing you the highest and lowest ranges.^{[6]
X
Trustworthy Source

Microsoft Support
Technical support and product information from Microsoft.

Go to source}
4
Select the cells containing your data. You can drag your cursor to select the entire range or you can select the first cell then press CTRL + SHIFT + Down arrow.
- After you've selected the data set, you'll see it entered into your formula. It'll look something like "=QUARTILE.EXC(A2:A20". Don't add the closing parentheses because you'll need to add more information to the function.
5
Enter ",1)" to finish the formula. The number after the data range can represent either Q1, Q2, Q3, or Q4, so you can use any number 1-4 in the function instead of 1.
- The function QUARTILE.EXC(A2:A20,1) will show you the position of the first quartile in your data set.^{[7]
  X
  Trustworthy Source
  
  Microsoft Support
  Technical support and product information from Microsoft.
  
  Go to source}
The cell you have selected will display the quartile function result. You can repeat this process using the other quartile function to see the differences.^{[8]
X
Research source}