# How to Use F1–F12 as Standard Function Keys on a Mac

By default, macOS assigns special system functions to the F1–F12 keys — such as brightness, volume, and media controls.

If you want to use **real F1–F12 keys** (for example in coding tools, terminals, or professional apps), you usually need to hold the **Fn** key at the same time.

This article explains **why this happens**, how to change it in macOS settings to use F1–F12 **without holding Fn**, and how to switch the behavior quickly if you need to toggle it frequently.

## How to Use F1–F12 as Standard Function Keys Using macOS Settings

macOS does provide a built-in option to reverse this behavior.

### Steps on macOS Sequoia (macOS 15):

1. Open **System Settings**  
2. Go to **Keyboard**  
3. Click **Keyboard Shortcuts…**  
4. Select **Function Keys**  
5. Enable **“Use F1, F2, etc. keys as standard function keys”**

### Steps on macOS Monterey and Earlier:

1. Open **System Preferences**  
2. Go to **Keyboard**  
3. Enable **“Use F1, F2, etc. keys as standard function keys”**

Once enabled:

- Pressing **F1–F12** sends standard function key signals  
- To access brightness, volume, or media controls, you now need to hold **Fn**

This works well if you **always** want standard function keys — but it’s not ideal for everyone.

## The Limitation of the Built-in macOS Option

The system setting is **global and static**:

- You can’t toggle it quickly  
- You can’t change it per app  
- Switching back requires opening System Settings again

If you sometimes need system controls, and sometimes need real F-keys, this quickly becomes annoying.

## How to Use F1–F12 Without Holding Fn (Instant Toggle)

If you want to use F1–F12 as standard function keys **without permanently changing macOS settings**, you need a faster way to toggle this behavior.

With **[1Setter](/content/site-root.html)**, the **FKey** lets you:

- Instantly switch F1–F12 to standard function keys  
- Avoid holding the Fn key  
- Turn the mode on or off from the menu bar

This is especially useful if you:

- Write code  
- Use IDEs, terminals, or editors like VS Code or JetBrains  
- Work in apps that rely heavily on function keys

In addition to **FKey**, 1Setter includes [40+ everyday macOS settings and utilities](/content/posts/1Setter-feature-list/index.html)—from display and focus controls to system actions—all accessible from the menu bar. If you often adjust more than one system setting during the day, or want to group them into one-click Combos, 1Setter may be worth trying.

## When Using Standard F-Keys Makes the Most Sense

Using F1–F12 as standard function keys is particularly helpful for:

- **Developers** (debugging, stepping, shortcuts)  
- **Designers** using professional tools  
- **Power users** who rely on keyboard workflows  
- Anyone switching between macOS and Windows keyboards

Instead of changing system settings back and forth, a toggle-based approach keeps your workflow smooth.

## Do External Keyboards Change F1–F12 Behavior on Mac?

External keyboards behave the same way as Apple keyboards:

- macOS still prioritizes system functions by default  
- You still need **Fn** unless you change the setting

Some keyboards have hardware-level switches, but macOS software control still applies.

That’s why a system-level toggle remains useful even with external keyboards.

## Does Using Standard Function Keys Affect macOS Shortcuts?

No. Changing F-key behavior does **not** break macOS shortcuts.

- System shortcuts still work  
- Media and brightness controls are still accessible with Fn  
- Apps receive correct F-key signals

You’re simply choosing **which behavior is primary**.

## Summary

- macOS prioritizes system functions for F1–F12 by default  
- You can change this globally in System Settings  
- The built-in option lacks flexibility  
- A toggle-based approach lets you switch between system controls and real F-keys when you need to

If you frequently switch between system controls and standard function keys, having quick access makes a noticeable difference in daily workflows.