How to Connect Your PC to a TV

The simplest way to connect depends on what ports your devices have

You can connect a PC to a TV using a cable, wirelessly, or through a streaming device. The easiest method depends on whether your PC and TV are close together, what ports they have, and whether you want to mirror your screen or extend it. Most people use either an HDMI cable (if both devices have HDMI ports), a wireless connection like Miracast or AirPlay, or a dedicated streaming device like a Chromecast or Roku.

The connection you choose affects picture quality, lag time, and whether you can use your PC normally while the TV displays something else. A wired connection is fastest and most reliable. Wireless connections are convenient but may have slight delays, which matters if you are gaming or watching video.

Key Takeaways

HDMI is the fastest and most common wired connection; most modern PCs and TVs have an HDMI port.
Wireless connections like Miracast (Windows) and AirPlay (Mac) work without cables but may have slight delays.
Streaming devices like Chromecast or Roku let you send video from your PC without needing to match ports.
Mirroring copies your entire screen to the TV; extending uses the TV as a second monitor so you can work on both at once.
Older PCs or TVs may need adapters or different cables like DisplayPort, VGA, or USB-C.

Using an HDMI cable for the most reliable connection

HDMI is the standard video connection on almost all modern PCs and TVs made in the last ten years. An HDMI cable carries both video and audio, so you only need one cable. Plug one end into your PC's HDMI port and the other into any HDMI port on your TV. The TV should detect the connection automatically.

Once connected, your PC may show the video on the TV immediately, or you may need to change the input. On your TV remote, press the Input or Source button and select the HDMI port you plugged into (usually labeled HDMI 1, HDMI 2, and so on). Your PC screen will appear on the TV. If you want to use the TV as a second monitor instead of just mirroring, right-click your desktop on Windows and select Display Settings, then choose "Extend" instead of "Duplicate."

HDMI cables are inexpensive (usually $5 to $15) and work with any PC and TV that have HDMI ports. The main limitation is distance — standard HDMI cables work reliably up to about 25 feet, though longer cables exist and may need a signal booster for distances beyond 50 feet.

Connecting wirelessly with Miracast or AirPlay

If your TV supports Miracast (most modern Samsung, LG, and other Android TV brands do), you can send your PC screen wirelessly without a cable. On Windows 10 or 11, press the Windows key and the letter P together, then select "Connect to a wireless display." Your PC will search for nearby Miracast receivers. Select your TV from the list, and your screen will appear on the TV within a few seconds.

If you have a Mac, you can use AirPlay to send video to an Apple TV or to some newer Samsung and LG TVs that support AirPlay 2. Click the Control Center icon in the top-right corner of your Mac, select Screen Mirroring, and choose your TV from the list. Your Mac screen will mirror to the TV.

Wireless connections are convenient because you do not need a cable, but they can have a slight delay (usually less than a second) and may drop if your PC and TV move far apart or if your Wi-Fi network is crowded. They work best for watching video, presentations, or browsing. If you are gaming or doing anything that needs instant response, a wired HDMI connection is more reliable.

Using a streaming device when your PC and TV do not match

If your PC does not have HDMI or your TV does not support Miracast, a streaming device like Google Chromecast, Amazon Fire TV, or Roku can bridge the gap. These devices plug into your TV's HDMI port and connect to your Wi-Fi network. Once set up, you can send video from your PC to the device wirelessly.

With Chromecast, you can cast from Chrome on Windows or Mac by clicking the three-dot menu in the top-right corner of the browser, selecting "Cast," and choosing your Chromecast device. This sends only the browser tab you are casting, not your entire screen. Some apps like Netflix and YouTube also have built-in cast buttons.

Roku and Fire TV work similarly but have their own app ecosystems. You can download apps directly on the device, or use your phone or PC to send content. Streaming devices usually cost $25 to $100 and are useful if you want to keep your PC and TV in separate rooms or if you use multiple devices.

Connecting older PCs and TVs with adapters

If your PC or TV is more than ten years old, it may not have HDMI. Older PCs often have VGA (a blue port with three rows of small holes) or DVI (a white port with pins). Older TVs may have VGA, component video (three colored ports), or S-video.

You can buy adapters to convert between these older standards and HDMI. A VGA-to-HDMI adapter costs $10 to $30 and lets you connect an older PC to a modern TV. DVI-to-HDMI adapters work the same way. Keep in mind that VGA and DVI carry only video, not audio, so you may need a separate audio cable or adapter to get sound on the TV.

Some newer PCs use USB-C or Thunderbolt ports instead of HDMI. These can output video, but you will need a USB-C-to-HDMI adapter. Check your PC's manual or look at the ports on the back to see what you have.

Mirroring versus extending your screen

Mirroring copies your entire PC screen to the TV. Whatever you see on your monitor also appears on the TV. This is useful for presentations, watching videos, or showing something to a group. When mirroring, your PC treats the TV as a duplicate of your main display, so you cannot use them independently.

Extending uses the TV as a second monitor. Your PC screen stays on your monitor, and the TV shows a different part of your desktop. You can drag windows between the two screens, which is useful if you want to watch a video on the TV while working on your PC. To extend instead of mirror, right-click your desktop on Windows and select Display Settings, then choose "Extend these displays" under the Multiple Displays section. On Mac, go to System Preferences, select Displays, and check "Mirror Displays" to turn it off.

Some PCs default to mirroring when you first connect. If you want to extend, you may need to change the setting manually the first time. After that, your PC will remember your preference.

Troubleshooting common connection problems

If your TV does not detect the connection, first check that you plugged the cable into the correct port on both devices. HDMI ports look similar, so try a different HDMI port on your TV if the first one does not work. Then press the Input or Source button on your TV remote and make sure you selected the right port.

If you are using a wireless connection and it is not working, make sure your PC and TV are on the same Wi-Fi network. Restart both devices and try again. If Miracast is not finding your TV, check that your TV's wireless display feature is turned on (this is usually in the TV's settings under Network or Wireless).

If you see video but no sound, the audio may be going to your PC speakers instead of the TV. On Windows, right-click the speaker icon in the bottom-right corner, select "Open Volume mixer," and change the output device to your TV or HDMI port. On Mac, go to System Preferences, select Sound, and choose your TV or HDMI device under Output.

If the picture is blurry or pixelated, try a shorter HDMI cable or move your PC closer to the TV if using wireless. Older cables may not support high resolutions; a newer HDMI 2.0 or 2.1 cable can help if you are trying to display 4K video.

Frequently Asked Questions

Can I use my PC and TV at the same time if they are connected?

Yes, if you extend your display instead of mirroring. When extending, your PC screen stays on your monitor and the TV shows a different part of your desktop. You can drag windows between them and work on both at once. Mirroring copies your entire screen to the TV, so both show the same thing.

Do I need to buy an expensive HDMI cable?

No. A basic HDMI cable works the same as an expensive one for most uses. Cheap cables ($5 to $10) work fine for standard video. You only need a more expensive cable if you are using a very long run (over 50 feet) or trying to display 4K video at high refresh rates, which is rare for PC-to-TV connections.

What if my PC does not have any video ports?

Some laptops have only USB-C or Thunderbolt ports. You can buy a USB-C-to-HDMI adapter (usually $15 to $40) that lets you connect to any TV with HDMI. Alternatively, use a wireless connection like Miracast if your TV supports it, or use a streaming device like Chromecast.

Will connecting my PC to a TV make it run slower?

No. The connection itself does not slow down your PC. However, displaying high-resolution video on a large TV uses more graphics power than a small monitor, so very old PCs may struggle with 4K video. For normal use, you will not notice a difference.

Can I use my TV as my main monitor all the time?

Yes, but it is not ideal for everyday work. TVs have higher input lag (delay between your mouse movement and what appears on screen) than monitors, which can be annoying for typing or detailed work. They also sit farther away, so text may be harder to read. TVs work better for watching video or presentations than for daily computer work.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.