How do I set the default number format when opening a csv file?

Charles_Knell 

In Office 365 Excel, you can set the default number format for all numbers in the Excel environment, but this won't directly affect the formatting of numbers when opening a CSV file. However, you can create a workaround to achieve your desired result.

Here's how you can set the default number format in Excel:

1. Open Excel and create a new blank workbook.
2. Select the entire worksheet by clicking the square between the row numbers and column letters (top-left corner), or press Ctrl + A to select all cells.
3. Right-click on any selected cell and choose "Format Cells" from the context menu.
4. In the "Format Cells" dialog box, go to the "Number" tab.
5. Choose your desired number format under the "Category" list.
6. Customize the number format further if needed, then click "OK" to apply the changes.
7. Now, whenever you enter numbers into cells, they will automatically use the default number format you've set.

To apply this default number format when opening a CSV file, you can create a template Excel file with the desired number format settings and use it as a starting point for your CSV files:

1. Create a new Excel workbook and set the default number format as described above.
2. Save the workbook as a template file (e.g., "NumberFormatTemplate.xltx") in a convenient location on your computer.
3. When you want to open a CSV file with the desired number format, open Excel and create a new workbook using the template file you saved.
4. Import or open the CSV file into the new workbook. The numbers should now follow the default number format you set in the template.

This approach allows you to maintain a consistent number format when working with CSV files in Excel. However, keep in mind that CSV files do not store formatting information like Excel workbook files, so you'll need to apply the formatting each time you open a CSV file. Using a template file can streamline this process by providing a predefined format to start with. The text was created with the help of AI.

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