How to Add Commas to Numbers in Excel: A Step-by-Step Guide

Adding commas to numbers in Excel is a simple task that can greatly improve the readability of your data. By using the built-in formatting options, you can quickly apply comma separators to large numbers, making them easier to understand at a glance. In just a few clicks, you’ll have your numbers looking clean and professional.

Step by Step Tutorial: Adding Commas to Numbers in Excel

Before we begin, it’s important to note that adding commas to your numbers in Excel will not change their value, it will only change how they are displayed. This can be particularly helpful when dealing with financial data or large datasets.

Step 1: Select the cells you want to format

Click and drag your mouse over the cells containing the numbers you want to add commas to.

Selecting the right cells is crucial because Excel will only apply the formatting to the cells you’ve highlighted. Make sure you’ve got them all!

Step 2: Open the ‘Format Cells’ dialog box

Right-click on the selected cells and choose ‘Format Cells’ from the context menu, or press ‘Ctrl’ + ‘1’ on your keyboard.

The ‘Format Cells’ dialog box is where all the magic happens. It’s your gateway to a wide range of formatting options, including the addition of commas.

Step 3: Select the ‘Number’ tab

In the ‘Format Cells’ dialog box, click on the ‘Number’ tab to access the number formatting options.

The ‘Number’ tab is where you’ll find all the options related to how your numbers are displayed, including decimal places, currency symbols, and of course, commas.

Step 4: Choose the ‘Number’ category

Within the ‘Number’ tab, select the ‘Number’ category from the list of options.

Choosing the ‘Number’ category will give you access to the formatting options specifically for numerical data, including the ability to add commas.

Step 5: Check the ‘Use 1000 Separator (,)’ box

In the ‘Number’ category, check the box next to ‘Use 1000 Separator (,)’ to enable comma separators for the selected cells.

By checking this box, you’re telling Excel that you want to use commas to separate every three digits in your numbers, making them easier to read.

After completing these steps, your selected numbers will now be displayed with commas, enhancing their readability. For example, 1000000 will become 1,000,000. This can make a significant difference when you’re dealing with large datasets or presenting financial information.

Tips for Adding Commas to Numbers in Excel

  • If you want to add commas and also specify the number of decimal places, you can do so in the ‘Format Cells’ dialog box under the ‘Number’ category.
  • You can use the ‘Accounting’ format instead of the ‘Number’ format if you want to align dollar signs and decimal points in a column.
  • Remember that adding commas is only a visual change and will not affect any calculations or data analysis you perform on the numbers.
  • If you’re working with a large dataset, you can quickly select all the cells you want to format by clicking on the column or row header.
  • To quickly access the ‘Format Cells’ dialog box, you can also use the keyboard shortcut ‘Ctrl’ + ‘Shift’ + ‘1’.

Frequently Asked Questions

How do I remove commas from numbers in Excel?

To remove commas, simply follow the same steps as adding them but uncheck the ‘Use 1000 Separator (,)’ box in the ‘Format Cells’ dialog box.

Can I add commas to numbers without changing the cell format to ‘Number’?

Yes, you can use the ‘Custom’ category in the ‘Format Cells’ dialog box to create a custom format that includes commas.

Will adding commas to numbers affect my formulas?

No, adding commas is a formatting change and will not impact the actual value of the numbers or any formulas they are used in.

Can I add commas to numbers in Excel for Mac?

Yes, the process for adding commas to numbers in Excel for Mac is the same as in Excel for Windows.

How do I add commas to numbers in all new Excel sheets by default?

You can create a template with the desired number formatting and use it for all new sheets, or you can set the default number format in Excel options.


  1. Select the cells you want to format.
  2. Open the ‘Format Cells’ dialog box.
  3. Select the ‘Number’ tab.
  4. Choose the ‘Number’ category.
  5. Check the ‘Use 1000 Separator (,)’ box.


Adding commas to numbers in Excel is a breeze once you know where to look. It’s a small change that can make a big impact on how your data is perceived. Whether you’re preparing a report, analyzing financial data, or simply trying to make your spreadsheet a bit more readable, knowing how to add commas to numbers is an essential skill. Plus, it’s a quick win that requires minimal effort but yields maximum results. So go ahead, spruce up those numbers, and watch as your data transforms from a jumble of digits into clear, comprehensible figures. If you’ve found this article helpful, don’t hesitate to dive deeper into Excel’s formatting options to discover even more ways to polish your spreadsheets.

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