Alt H 3 U on Mac: Underline in Excel

To run Underline with Alt H 3 U in Excel on a Mac, install LightningXL, tap Option, then type H, 3, U. The same keys as Windows, with the same result.

Step by step

1. Install LightningXL

   Download LightningXL, then follow the instructions. Setup takes about two minutes.

2. Select what to act on

   Click a cell, or select the range the command should apply to.

3. Tap Option, then type H 3 U

   Tap ⌥ on its own to show the keytips, then H for Home, 3 for Underline, U for Underline.

What Alt H 3 U does

Underline sits under Home › Underline on the Excel ribbon. On Windows, Alt H 3 U runs it from the keyboard. Excel for Mac has the same ribbon but no Alt key, so without LightningXL you click through Home › Underline › Underline instead.

Related shortcuts

The rest of the Underline menu in Excel:

• ⌥H3D Double Underline