Shortcut keys
WindowsCtrl + U
MacCmd + U
Ribbon path
Home → Underline
What it does
Toggle underline formatting on selected cells or text within a cell.
How to use this shortcut
- Open the Excel workbook and select the relevant cell, row, column, range, or sheet.
- Press the shortcut keys shown above for your platform.
- Confirm any dialog options if Excel opens a menu or prompt.
FAQ
What is the Excel shortcut for underline?
On Windows, use Ctrl + U. On Mac, use Cmd + U.
Where is underline in the Excel Ribbon?
The Ribbon path is Home → Underline.
What does underline do in Excel?
Toggle underline formatting on selected cells or text within a cell.