Quick, clean, and to the point

Delete contents of selected cells

Windows shortcut 
Mac shortcut 

This shortcut will delete the contents of selected cells, leaving formatting intact.

On the Mac, Control-B also deletes cell contents of one or more cells.

Related videos

The videos below demonstrate this shortcut.
In this video, we compare formulas and pivot tables side-by-side to build the same reports to demonstrate how powerful and easy to use pivot tables are.
In this video, we show you how to edit data that's already been entered in a worksheet
In this video, we show basic ways to enter data into a worksheet.
In this video, we show you how to use a lesser-known alignment option called Center Across Selection to center text without changing the worksheet grid.