How to Connect Your Computer to a TV

The fastest way depends on what ports your devices have

The connection method that works for you depends on which ports exist on both your computer and your TV. Most modern TVs have HDMI ports, which is the standard video connection. Your computer likely has HDMI, USB-C, DisplayPort, or an older VGA port. The goal is to match what both devices offer — if your computer has HDMI and your TV has HDMI, that's your answer. If they don't match, you'll need an adapter.

Before you buy anything or plug anything in, check what ports are actually on your devices. Look at the back and sides of your TV for labels like HDMI, DisplayPort, or VGA. Do the same for your computer — check the back of a desktop tower and both sides of a laptop. Write down what you find. This takes two minutes and saves you from buying the wrong cable.

Key Takeaways

HDMI is the most common connection method and works with nearly all modern TVs and computers.
USB-C and DisplayPort are common on newer laptops and can carry both video and audio through a single cable.
Wireless connections like Miracast and AirPlay work without cables but may have lag and require both devices to support the same standard.
You may need an adapter if your computer and TV don't have matching ports, but adapters cost between $10 and $40.
Once connected, you'll usually need to change your TV's input source using the remote to see your computer's display.

HDMI cable: the standard wired connection

HDMI is the most straightforward option if both your computer and TV have an HDMI port. Buy a standard HDMI cable — they're inexpensive and widely available at electronics stores and online. Length matters: measure the distance from your computer to your TV and add a few feet for routing. A 6-foot or 10-foot cable is common for living rooms; a 25-foot cable works for larger distances but costs more.

Plug one end into the HDMI port on your computer and the other into an HDMI port on your TV. Your TV has multiple HDMI ports — it doesn't matter which one you use. Then pick up your TV remote and press the Input or Source button. A menu will appear showing HDMI 1, HDMI 2, and so on. Select the HDMI port you plugged into. Your computer's display should appear on the TV within a few seconds.

If nothing appears, restart your computer. If you still see nothing, try a different HDMI port on the TV. If the TV shows a picture but it's sideways or cut off, right-click on your desktop (Windows) or go to System Preferences > Displays (Mac) and adjust the resolution and orientation settings.

USB-C and Thunderbolt: single-cable video and power

Many newer laptops — particularly MacBooks and recent Dell, Lenovo, and ASUS models — have USB-C or Thunderbolt ports that can carry video. This is useful because the same cable can power your laptop while displaying on the TV. Check whether your TV has a USB-C port; most don't, so you'll likely need an adapter.

A USB-C to HDMI adapter (around $15 to $30) plugs into your laptop's USB-C port and has an HDMI connector on the other end. Plug the HDMI end into your TV, then switch the TV's input to that HDMI port. The picture should appear when ready. Some USB-C adapters also have a USB-A port or SD card slot, which is handy if you want to transfer files at the same time.

If your TV has a USB-C port, you can skip the adapter and use a USB-C to USB-C cable directly. This is rare on TVs but becoming more common on high-end models. Check your TV's manual or the ports on the back to be sure.

DisplayPort: for gaming and high-refresh displays

DisplayPort is common on gaming laptops and desktop monitors but rare on TVs. If your computer has DisplayPort and your TV doesn't, you'll need a DisplayPort to HDMI adapter (around $20 to $40). Plug the adapter into your computer's DisplayPort, connect an HDMI cable to the adapter, and plug the other end into your TV's HDMI port.

DisplayPort supports higher refresh rates than HDMI, which matters if you're gaming or working with fast-moving video. For everyday use like web browsing or watching videos, HDMI is sufficient and simpler.

Wireless connections: Miracast, AirPlay, and Chromecast

If you don't want to run a cable, you can mirror your computer's screen wirelessly. The method depends on what your computer and TV support. Windows computers support Miracast, which works with many modern TVs and streaming devices like Roku and Amazon Fire Stick. Macs support AirPlay, which works with Apple TV and some newer Samsung and LG TVs.

To use Miracast on Windows, right-click the taskbar and select "Project" or go to Settings > System > Display > Multiple Displays. Choose "Connect to a wireless display." Your TV or streaming device should appear in the list. Select it and wait a few seconds for the connection to establish. The first time you connect, you may need to enter a PIN shown on your TV.

To use AirPlay on Mac, click the Control Center icon in the top-right corner, select "Screen Mirroring," and choose your Apple TV or compatible TV from the list. The connection is usually faster than Miracast and more reliable.

Wireless connections have drawbacks: they can lag by a quarter-second or more, which is noticeable when you're typing or moving your mouse. They also drain your laptop battery faster than a wired connection. For watching videos or presentations, wireless works well. For gaming or detailed work, a cable is better.

Older computers and VGA ports

If your computer has a VGA port (a blue connector with three rows of small holes) and your TV doesn't, you'll need a VGA to HDMI adapter. These cost $15 to $30 and are still widely available. Plug the VGA cable into your computer, connect it to the adapter, and plug an HDMI cable from the adapter into your TV.

VGA is an older standard and carries only video, not audio. If you need sound, you'll have to run a separate 3.5mm audio cable from your computer's headphone jack to your TV's audio input, or use your TV's built-in speakers if your computer is close enough to hear them clearly.

Troubleshooting common problems

If your computer connects but the picture is stretched or cut off, adjust the resolution. On Windows, right-click the desktop and select "Display settings." Under "Resolution," try a lower setting like 1920 x 1080. On Mac, go to System Preferences > Displays and select "Scaled," then choose a resolution that fits your TV. The TV's native resolution is usually listed in its manual.

If the TV shows "No Signal," make sure you've selected the correct input source on the TV remote. Press Input or Source and look for the port you plugged into. If you're using an adapter, try unplugging it and plugging it back in — sometimes adapters need a moment to establish the connection.

If you see picture but no sound, check your computer's audio settings. On Windows, right-click the speaker icon in the taskbar and select "Open Volume mixer." Make sure the volume isn't muted and that the correct output device is selected. On Mac, go to System Preferences > Sound > Output and select your TV or HDMI device from the list.

Frequently Asked Questions

Do I need a special cable for 4K video?

Standard HDMI cables work with 4K, but older cables may not support the full bandwidth. If you're buying a new cable for a 4K TV and 4K-capable computer, look for "HDMI 2.0" or "HDMI 2.1" on the package. These cost the same as regular HDMI cables and may support you get the best picture quality.

Can I use my TV as a second monitor while working?

Yes. Once connected, right-click your desktop (Windows) or go to System Preferences > Displays (Mac) and choose "Extend" or "Arrangement." Your computer will treat the TV as a separate display, and you can drag windows between them. This is useful for presentations or working with multiple windows open.

Why does my wireless connection keep dropping?

Wireless connections are sensitive to interference from other devices and distance. Move your computer closer to the TV, turn off other Wi-Fi devices nearby, and make sure your router is not between your computer and TV. If the problem persists, use a wired connection instead.

What if my TV is too far from my computer to use a cable?

Wireless is your best option for long distances. If wireless is unreliable, you can buy a long HDMI cable (up to 50 feet) and route it along walls or through conduit. Active HDMI cables (which have a small power adapter) work better over long distances than passive cables and cost $30 to $60.

Can I connect multiple computers to the same TV?

Yes, but only one at a time. If you have multiple HDMI cables, you can leave them plugged in and switch between them using your TV's input menu. If you want to switch between computers wirelessly, use Miracast or AirPlay — your TV will connect to whichever device you're trying to mirror from.

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.