Using number formats in a spreadsheet is very helpful. They make your data easier to read and work with. When you apply a number format, you tell the spreadsheet what type of data is in each cell. For example, if you use the date format, the spreadsheet knows you’re entering calendar dates. This helps the spreadsheet understand your data better. It also makes sure that your data stays consistent and that formulas work correctly.

If you don’t choose a number format, Excel will apply the general format by default. But the general format might change your data a little. It’s better to use the right number format for your data to keep things clear and accurate.