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Decrease font size one step

Windows shortcut 
AltHFK
Mac shortcut 
⌘⇧<

This shortcut will decrease the font size of current selection but one "step". Steps correspond to the sizes shown in the font size menu.

222 Excel Shortcuts for Windows and Mac

Related videos

The videos below demonstrate this shortcut.
Shortcuts to find and replace
In this video, we'll look at the shortcuts you can use for find and replace in Excel.
Shortcuts for formatting
In this lesson, we cover shortcuts you can use to format cells and other objects.