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. If ...

Number formats in Microsoft Excel define how data is displayed in your spreadsheet without changing the underlying values. As well as using number formats to present data as dates, times, percentages, ...

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. Remove both the Decimal and Thousand separators Numbers are ...