When you enter a formula into an empty table column, the column automatically fills the rest of the rows in the column. Excel
calls this a calculated column. Calculated columns can reduce errors that might be introduced by manual filling or by using copy and paste. In addition, calculated columns continue to adjust as you add or delete rows in the table.
You can enter additional formulas in a calculated column as exceptions, but Excel
notifies you of any inconsistencies so that you can resolve them, if it is necessary.
Do any of the following:
Create a calculated column
Change the formula in a calculated column
Add exceptions to your calculated column
Delete a calculated column