When you type a seven-or-ten-digit phone number into an Excel cell that uses the phone number format, Excel will automatically change the way the number looks so that it appears as a phone number ...

Learn Excel 365 number formatting to create clear, professional spreadsheets. Learn essential tips and advanced techniques for data clarity ...

If the Excel cell format is not changing to a number because the Number formatting is not working, take these steps to fix the issue.

Learn how to format numbers in Thousands, Millions, and Billions in Excel and Google Sheets. Use number Formatting to convert numbers.