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 ...

You can stop Excel from rounding large numbers by changing the cell format from General to Number. This trick works for numbers containing 15 or less than 15 digits.

How to Change a Cell's Number Format to Currency or Accounting First, select the cells, rows, or columns containing the financial values. Then, click the number format drop-down menu in the Number ...

Combine an Excel custom format with data validation and remove the pressure for input perfection from personnel by letting Excel do the work.

Click the "Number" tab and review the formats in the Category section. Click the "Text" format to select it. This format tells Excel to treat values in cells as text.

However, if you paste a differently formatted date, Excel accepts the source formatting. To further complicate the situation, Excel changes the format of the target cell to that of the pasted value!

Excel tables have many benefits that regular spreadsheets lack. The biggest is the option to use data from multiple tables to create queries and reports.

You can change the date & time format in Google Sheets & Excel Online using this guide. Use different date & time formats in spreadsheets.