An Apple keyboard on a desk showing fn and control keys

How to Remap the fn (Function) key to ctrl (Control) on Mac

If you're used to CTRL being the bottom left key, this guide will help you.
  • by Zach (189)
  • Time to complete: 5 minutes

I rarely, if ever, use the function key on my Mac keyboard. Moreso, decades of computing has taught my brain to treat the bottom-left key on the keyboard as the Control key.

This short guide will show you how to make your fn (function) key as act a ctrl (control) key in macOS. This will work for both the Macbook keyboard and external Apple keyboards, both of which can be configured separately.


MacOS Keyboard Preferences pane

Navigate to System Preferences > Keyboard Settings to open the Keyboard Settings pane.


MacOS Modifier Keys settings

Click the Modifier Keys button and select the keyboard you'd like to configure

It's possible to convert the fn key to ctrl for your external keyboard, Macbook keyboard, or both!


Remapping fn key to ctrl

To remap the fn key to ctrl in macOS, change the Function (fn) Key: dropdown to ⌃ Control. Then, press OK.

To change additional keyboards, simply select the additional keyboard from the Select keyboard: dropdown and repeat this step.

You're all done!