
Use your TV as a display with Mac
You can use many kinds of TVs as computer displays. To connect your Mac to your TV, you need a video cable that connects your computer’s display port to the video input port on your TV. If you can’t find a cable that connects the ports on your Mac and TV, you may need an adapter for the cable. You can also use AirPlay. See Stream video and audio with AirPlay.
Connect your Mac to your TV
Connect one end of the video cable (or an adapter, if necessary) to the computer’s Thunderbolt or HDMI port, then connect the other end of the cable to the TV’s video input port.
Follow the onscreen instructions to choose whether to share a window or to mirror or extend your Mac screen on your TV. Select Set as Default to save your preferences and skip this step the next time you connect to a TV.
If you need to adjust the resolution on your TV, choose Apple menu
> System Settings, then click Displaysin the sidebar. (You may need to scroll down.)
Select a resolution, or click Default to automatically use the best resolution.
If you want your HDTV to play audio as well as video from your Mac, choose Apple menu > System Settings, click Sound
in the sidebar (you may need to scroll down), then click Output.
Select your HDTV in the list of devices. If you want to play audio on a different device (such as your computer’s speakers or an AV receiver that’s part of your sound system), select it instead.
If the picture from your Mac doesn’t fill the TV screen
If you connected your Mac to a TV and the images don’t fill the TV screen, try turning on Overscan.
On your Mac, choose Apple menu
> System Settings, then click Displaysin the sidebar. (You may need to scroll down.)
Select Overscan. (This option is only available on supported TVs.)
See the Apple Support article Fix overscan or underscan on your TV or projector.
You can also choose which screen to optimise for in Displays settings.