Updated: 11/12/2023 by Computer Hope
Ctrl+1 keyboard shortcut.

Alternatively known as Control+1 and C-1, ^1, Ctrl+1 is a keyboard shortcut most commonly used to switch to the first tab in an Internet browser or other programs with tab support. Below are other programs that use this keyboard shortcut and related information.

How to use the Ctrl+1 keyboard shortcut

To use this keyboard shortcut, press and hold either Ctrl key, and while continuing to hold, press 1.


For this shortcut, you must use 1 above the top row keys, not on the numeric keypad.

Ctrl+1 in Microsoft Excel

In Microsoft Excel and all other spreadsheet programs, pressing Ctrl+1 opens the Format Cells window.

Ctrl+1 in an Internet browser

With all major Internet browsers (e.g., Chrome, Edge, Internet Explorer, Firefox), pressing Ctrl+1 switches to the first tab.

Ctrl+1 in Microsoft Word

In Microsoft Word, pressing Ctrl+1 changes a line, paragraph, or all highlighted text to have single spacing.


You may also press Ctrl+2 to set the line spacing to double, or Ctrl+5 to set it to 1.5 spaces per line.

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

Ctrl, Keyboard shortcut, Keyboard terms