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Microsoft Excel - Renaming a worksheet
By default, Excel names worksheets Sheet1, Sheet2, Sheet3 and so on, but you can easily rename them.
3 ways to rename a worksheet
Double-click the sheet tab, and type the new name.
Right-click the sheet tab, click Rename, and type the new name.
Use the keyboard shortcut Alt+H > O > R, and type the new name.
IMPORTANT: Worksheet names cannot:
Contain more than 31 characters.
Contain any of the following characters: / \ ? * : [ ]
For example, 02/17/2016 would not be a valid worksheet name, but 02-17-2016 would work fine.
Begin or end with an apostrophe ('), but they can be used in between text or numbers in a name.
Be named "History". This is a reserved word Excel uses internally.
Rename a workbook
If you want to rename a workbook, first locate it in Windows Explorer, then you can press F2, or right-click and select Rename, then type the new name.
If your workbook is already open, then you can go to File > Save As to save the workbook with a different name. This will create a copy of the existing workbook.
For more information, please visit the Excel help center.