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

Adding commas to numbers in Excel may seem daunting, but it only takes a few simple steps. Whether you’re dealing with large data sets or just a few figures, this guide will help you format your numbers for better readability.

How to Add Commas to Numbers in Excel

Adding commas to numbers in Excel helps in making large numbers more readable. We’ll break down the steps so you can easily follow along and get your data looking sharp.

Step 1: Open Your Excel Spreadsheet

Open the Excel file you want to format.

Make sure you have access to the file and that it contains the numbers you’d like to format. If you don’t have an existing file, create a new one and input some numbers.

Step 2: Select the Cells

Highlight the cells that contain the numbers you want to format.

Click and drag your mouse over the cells, or hold down the ‘Ctrl’ key while you click on individual cells to select multiple ones.

Step 3: Go to the Home Tab

Navigate to the ‘Home’ tab on the Excel ribbon.

The ‘Home’ tab is usually the first tab in the ribbon at the top of Excel. It contains various formatting options, including number formatting.

Step 4: Click on the Comma Style Button

In the ‘Number’ group, click on the Comma Style button.

The Comma Style button looks like a comma or a small box with a comma in it. Clicking this button will instantly add commas to your selected numbers.

Step 5: Adjust Decimal Places if Necessary

If you want to change the number of decimal places, click the ‘Increase Decimal’ or ‘Decrease Decimal’ buttons next to the Comma Style button.

These buttons allow you to fine-tune the appearance of your numbers. For example, you can display 1,000 as 1,000.00 if you prefer.

Once you have completed these steps, your numbers should be formatted with commas, making them much easier to read.

Tips for How to Add Commas to Numbers in Excel

  1. Use keyboard shortcuts: Press ‘Ctrl+Shift+1’ for quick access to the Comma Style.
  2. Custom formats: Go to ‘Format Cells’ (Ctrl+1) for more advanced formatting options.
  3. Bulk formatting: Select entire columns or rows to format large data sets at once.
  4. Conditional formatting: Use conditions to apply formatting rules automatically.
  5. Save your work: Always save your changes to avoid losing your formatted data.

Frequently Asked Questions

How do I remove commas from numbers in Excel?

Select the cells, navigate to the ‘Number’ group in the ‘Home’ tab, and choose ‘General’ from the dropdown menu.

Can I apply comma formatting to an entire column?

Yes, click on the column header to select the entire column, then apply the Comma Style as described.

Will this formatting affect calculations?

No, adding commas is purely for readability; it doesn’t change the actual value of the numbers.

Can I combine comma formatting with other number formats?

Yes, you can use comma formatting alongside currency, percentage, and other number formats.

What if the Comma Style button is greyed out?

Ensure that the cells you selected contain numeric values. Text or empty cells won’t allow this formatting.


  1. Open your Excel spreadsheet.
  2. Select the cells.
  3. Go to the Home tab.
  4. Click on the Comma Style button.
  5. Adjust decimal places if necessary.


Commas in Excel are like the unsung heroes of data presentation. They make large numbers digestible, which is a big deal when you’re dealing with finances, statistics, or any substantial data set. By following these simple steps and tips, you can quickly make your numbers look cleaner and more professional.

Formatting may seem trivial, but it’s crucial for readability and accuracy. If you’re often working with large numbers, getting comfortable with Excel’s formatting tools will save you time and keep your data clear. So, don’t just skim over this—make sure to practice these steps. Your future self, swamped with data, will thank you!

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