How to quickly convert column number to letter?

Some people may like to show the both the columns and rows in numbers. How to show the columns in numbers or letters in Excel?

If you want to quickly change the column number to letter, please do as following steps:

1. Click File > Options, and an Excel Options dialog box will pop out. See screenshot:

2. Then click Formulas from the left pane, and in the Working with formulas catalogue, uncheck the R1C1 reference style.

3. And then click OK. The column numbers have been changed to letters. See screenshot:

If you want to display the column header as number, go to check R1C1 reference stype option in Formulas section of the Options dialog.

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