Where to find display settings on your Mac

Display settings on a Mac live in System Settings, not scattered across different menus. Open System Settings by clicking the Apple menu in the top-left corner, then select "System Settings" from the dropdown. Once System Settings opens, click "Displays" in the sidebar on the left. If you don't see Displays listed, scroll down in the sidebar until you find it.

What you see next depends on whether you're using one screen or multiple screens. If you have just your Mac's built-in screen, you'll see one display listed. If you've connected an external monitor, keyboard, or TV, each one appears as a separate display you can adjust independently.

Key Takeaways

  • Display settings are found in System Settings under the Displays section, accessible from the Apple menu in the top-left corner.
  • Resolution, refresh rate, and brightness can all be changed from the main Displays panel, and changes take effect when ready.
  • For multiple monitors, each display has its own settings panel, and you can arrange them to match your physical setup.
  • Night Shift reduces blue light in the evening and can be scheduled automatically or turned on manually whenever you need it.
  • If your Mac doesn't recognize an external display, check the cable connection first, then restart your Mac before troubleshooting further.

Changing resolution and refresh rate

Resolution controls how sharp and detailed your screen appears. Higher resolution means more pixels packed into the same space, which makes text and images crisper but smaller. To change it, open Displays in System Settings and look for "Resolution" near the top of the panel. Click the dropdown menu and choose from the available options. Your Mac will show you a preview of each resolution for a few seconds before you confirm.

Refresh rate is how many times per second your screen redraws the image. Most Macs default to 60 Hz, which is fine for everyday work. If you have a newer Mac with a high-refresh display (like 120 Hz on some MacBook Pro models), you can choose a lower refresh rate to save battery power. Click "Refresh rate" and select your preference. The change happens right away—you don't need to restart.

Adjusting brightness and contrast

Brightness is the easiest setting to change. In the Displays panel, you'll see a slider labeled "Brightness" near the top. Drag it left to dim the screen or right to make it brighter. If you want your Mac to adjust brightness automatically based on the light in your room, check the box next to "Auto-brightness." This uses your Mac's built-in sensors to detect ambient light and dim or brighten the display accordingly.

Contrast is less commonly adjusted, but it's available on some Mac models. If your display supports it, you'll see a "Contrast" slider below brightness. Increasing contrast makes the difference between light and dark areas more pronounced, which can help if you find text hard to read. Start with small adjustments and see what feels comfortable.

Using Night Shift to reduce blue light

Night Shift reduces the amount of blue light your screen emits, which can help reduce eye strain in the evening and may make it easier to fall asleep. To turn it on, go to System Settings > Displays and look for the "Night Shift" section. You can turn it on when ready by clicking the toggle, or set it to turn on automatically at sunset and off at sunrise.

If you want more control, click "Options" next to Night Shift. You can choose a custom schedule—for example, turn it on at 6 PM and off at 7 AM—or set it to a specific color temperature. Warmer (more orange) settings are easier on the eyes at night but make colors less accurate, so adjust it to what feels right for you. Night Shift doesn't change the actual colors in your photos or design work; it's purely a display filter.

Managing multiple displays and arrangement

If you've connected an external monitor or TV to your Mac, each display appears as a separate item in the Displays sidebar. Click on each one to adjust its resolution, brightness, and refresh rate independently. You can have different settings on your Mac's built-in screen and your external monitor at the same time.

To arrange your displays so they match your physical setup, look for the "Arrangement" tab at the top of the Displays panel. You'll see a diagram showing your displays as rectangles. Drag them around to match how they're actually positioned on your desk. This tells your Mac which direction to move your cursor when you move your mouse from one screen to the other. If your external monitor is to the right of your Mac, position it to the right in the diagram.

You can also choose which display is your main display—the one that shows your menu bar and Dock. Click the white bar at the top of one of the rectangles in the Arrangement view and drag it to a different display. Your menu bar and Dock will move there when ready.

Scaling and text size on external displays

When you connect an external monitor, your Mac automatically chooses a scaling level that makes text and icons a readable size. Sometimes this means the display shows fewer items on screen (scaled up) or more items (scaled down). If text looks too small or too large, you can adjust the scaling.

In the Displays panel, look for "Resolution" and click the dropdown. At the bottom, you'll see options labeled "Scaled." Each option represents a different balance between screen real estate and text size. Choose the one that makes text comfortable to read without squinting. If you're using an external display primarily for work that requires precision—like photo editing or spreadsheets—you may prefer a scaled-down option that shows more of your work at once, even if text is smaller.

Troubleshooting when your Mac doesn't recognize a display

If you've plugged in an external monitor and it doesn't appear in System Settings, start with the basics. Check that the cable is fully inserted into both your Mac and the monitor. If the monitor has a power button, make sure it's on. Then unplug the cable, wait 10 seconds, and plug it back in. Sometimes a fresh connection is all that's needed.

If the display still doesn't show up, restart your Mac. Hold down the power button until "Shut Down" appears on screen, click it, wait for your Mac to turn off completely, then press the power button again to turn it back on. Once your Mac restarts, reconnect the external display. If it still doesn't work, the cable may be damaged or your Mac's video port may need service—contact Apple Support or visit an Apple Store for help.

Frequently Asked Questions

Can I use different resolutions on two external monitors at the same time?

Yes. Each display in the Displays sidebar has its own settings. Click on one monitor, set its resolution, then click on the other and set a different resolution. Both will run at their chosen settings simultaneously without affecting each other.

Will changing display settings affect my battery life?

Yes, brightness and refresh rate both use battery power. Lowering brightness and choosing a lower refresh rate (if available) will extend battery life on a MacBook. Turning on auto-brightness lets your Mac manage this for you based on the light around you.

What's the difference between resolution and scaling?

Resolution is the number of pixels your display has. Scaling is how large those pixels appear on screen. You can have the same resolution but different scaling levels, which changes how much content fits on your screen and how large text appears.

Does Night Shift work on all Mac models?

Night Shift is available on Macs running macOS Sierra or later. If you don't see it in your Displays settings, your Mac may be running an older version of macOS. You can check your macOS version by clicking the Apple menu and selecting "About This Mac."

Can I save different display configurations and switch between them?

macOS doesn't have a built-in profile system for display settings, but your Mac remembers your settings when you disconnect and reconnect the same monitor. If you frequently switch between different external displays, you'll need to manually adjust settings each time you swap them.