Updated: 12/31/2020 by Computer Hope
Apple Command key, plus sign, and the letter B

Alternatively known as Cmd+B, Command+B is a keyboard shortcut most often used to toggle bold text on and off.


On Windows computers, the keyboard shortcut for bold is Ctrl+B.

How to use the Command+B keyboard shortcut

To use this keyboard shortcut, press and hold either Command key, and while continuing to hold, press B.

In many programs, this keyboard shortcut has two purposes: change highlighted text to bold or unbold (depending on its current state), or start typing bold text at the cursor's location.

Command+B in Excel and other spreadsheet programs

In Microsoft Excel and all other spreadsheet programs, pressing Command+B when one or more cells is selected will bold or unbold them. If you're editing the contents of a cell with no selected text, Command+B toggles bold on and off.

Command+B in Word and other word processors

In Microsoft Word and other word processors, highlighting text and pressing Command+B makes the text bold. If the text is already bold, pressing Command+B unbolds the text. Pressing Command+B without anything highlighted starts typing bold text at the cursor's location.

Using Command+B in an Internet browser

The Command+B keyboard shortcut serves different purposes depending on the Internet browser. For example, in Firefox, Command+B displays the bookmarks folder. However, in Safari and other browsers, Command+B does not currently have a function.

Below are links to related keyboard shortcuts and individual key pages.

B, Bold, Cmd, Keyboard shortcut, Keyboard terms