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

Excel may return a serial number instead of a date; because it is stored thus in the backend. Learn how to convert Serial Number to Date.

For some data types, such as a date or a percentage, Excel will change a cell's number format automatically as soon as you type it into a cell. Otherwise, there are various ways to change a number ...

Figure B Add a custom format. C3 is empty, so there’s nothing for Excel to do yet, but we know that if the input value is 10 numeric digits, that the format will display the value as expected.