How to Turn Your iPad into an Extra Mac Display

macOS Catalina and iPadOS include support for a new feature called Sidecar, designed to let you use your iPad as a secondary display for your Mac. Sidecar is fast, easy to use, and can mirror the content on your Mac or turn it into a secondary display for extra screen real estate wherever you are.

This guide covers everything you need to know about Sidecar, from how to use it to Apple Pencil compatibility .

What is Sidecar?

In short, Sidecar lets you use your iPad as a second display for your Mac, either wired or wireless. You can place it to the left or right of your main display and use it like any other display, but that’s not all it can do.

How to Turn Your iPad into an Extra Mac Display
MacBook and iPad side by side demonstrating Sidecar feature

Notably, Sidecar takes advantage of the iPad’s touchscreen. It even supports the Apple Pencil, making it a great addition if you’re an artist looking to expand your creative options. If you’re jealous of the touchscreen on your Windows PC, this doesn’t get you there, but it does get you one step closer.

How to use your iPad as a second Mac display with Sidecar

If you don't want to spend money on an external display for your MacBook, you can use Apple's Sidecar feature to turn your iPad into a secondary display.

Set up Sidecar on Mac

Because of Apple’s confusing iPad naming scheme, you should check the model, year, and age of your Mac as well as the type of iPad you have. Once you’ve done that, you should check Apple’s Sidecar requirements to make sure both devices support Sidecar.

How to Turn Your iPad into an Extra Mac Display
Sidecar system requirements page

Use Wireless Sidecar

Before you begin, make sure your Mac and iPad are signed in to the same Apple ID and connected to the same Wi-Fi network. Also, make sure Bluetooth is turned on on both devices and that they are within 30 feet of each other.

To start using Sidecar wirelessly, click the Control Center icon in the menu bar and select Screen Mirroring . Now, just select iPad under the Mirror or extend to heading .

How to Turn Your iPad into an Extra Mac Display
Screen Mirroring options in macOS Control Center

Using Sidecar over USB

If you don't have access to Wi-Fi or want to charge your iPad, you can also use Sidecar over USB. Just plug your iPad into your Mac with the included USB-C cable. Make sure your iPad is set to trust your Mac. Otherwise, you won't be able to connect.

Now all you need to do is go to Control Center on your Mac, click Screen Mirroring , and select your iPad from the list of devices. If your iPad doesn't appear in the list, check the cable you're using.

You can use Sidecar wirelessly and still plug your iPad into your Mac to charge if needed. This is often simpler than using the USB option.

How to use Sidecar on Mac

Once connected, you can choose to mirror or extend your display. Most people will probably want to use the extended option on the secondary display, and that’s what Sidecar uses by default. Just click the Screen Mirroring icon in the menu bar and choose between Mirror Built-In Retina Liquid Display and Use As Separate Display .

To change which side of your Mac your iPad appears on for easier mouse movement, go to System Settings , then go to the Displays menu . From there, switch to the Arrange tab and drag your iPad to whichever side of your Mac's display you've placed it.

How to Turn Your iPad into an Extra Mac Display
Arrange display settings on Mac

On the same Displays page , you can also choose whether you want to use your iPad or Mac as your main display or an extended display. For example, if you want to change how your iPad behaves, select it, then set the Use As option to Main display , Extended display , or Mirror for Built-in Display .

How to Turn Your iPad into an Extra Mac Display
Display settings on Mac

You can use your iPad like any other second display once you connect it via Sidecar. There are a few options for moving a window from your main display to your iPad. You can drag it to the edge of the screen until it appears on your iPad. It will look like the image below.

How to Turn Your iPad into an Extra Mac Display
Drag Mac window to iPad

Make sure to continue dragging toward the edge of your Mac screen until you see the cursor appear on your iPad screen.

Alternatively, you can hover over the green full screen button in the upper left of the window, then select Move to [Your iPad Name] .

How to Turn Your iPad into an Extra Mac Display
Move Mac window to iPad

By default, the iPad displays a sidebar with common controls like Command, Shift, and other modifier keys. These let you interact more easily with your Mac via the touchscreen. You also have a Touch Bar at the bottom of the screen, which works like the Touch Bar on some MacBook Pro models.

How to Turn Your iPad into an Extra Mac Display
Sidebar and Touch Bar on iPad

You can turn off both of these options by clicking the Screen Mirroring icon on the menu bar and clicking Hide Sidebar and Hide Touch Bar .

How to Turn Your iPad into an Extra Mac Display
Hide Sidebar and Touch Bar options

While using Sidecar, you can still use your iPad as usual by switching apps. After switching, you’ll see a new Continuity app icon in your iPad’s Dock. Just tap the icon to go back to using your iPad as a display.

How to Turn Your iPad into an Extra Mac Display
Continuity app icon on iPadOS Dock

Once you're done using your iPad as a second display for your Mac, all you have to do is tap the Disconnect icon at the bottom of the sidebar. Alternatively, you can go to Control Center on your Mac and turn off Screen Mirroring .

Connect to Apple Pencil

When using Sidecar, the ‌Apple Pencil‌ (first or second generation depending on your ‌iPad‌) acts as a mouse replacement for clicking, selecting, and other on-screen controls.

How to Turn Your iPad into an Extra Mac Display
Controllable via Apple Pencil

In apps like Photoshop and Illustrator, the ‌Apple Pencil‌ can do even more. You can draw right in Photoshop or other similar Mac apps to turn your iPad‌ into a graphics tablet for your Mac, not unlike a Wacom graphics tablet. It’s a great way to create artwork, edit photos, and more with the interactivity of the ‌Apple Pencil‌ but the power of a Mac.

Connect the keyboard

When you use a keyboard like Apple's Magic Keyboard with your ‌iPad‌, it acts as a replacement for your Mac keyboard, allowing you to type just like you would on a Mac in any open window.

How to Turn Your iPad into an Extra Mac Display
Sidecar is also compatible with Magic Keyboard

If you’re on a tight budget and can’t afford an external monitor, setting up Sidecar is a worthwhile alternative to achieving a multi-monitor setup. While you can explore some more customization options by going to System Settings > Displays , everything we’ve discussed above should be enough to get you started.

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