The fastest way to cast your computer to your TV

The method you use depends on what devices you have. If your TV is made in the last five years and your computer runs Windows 10 or 11, the simplest route is built-in casting—no extra hardware or apps needed. On a Mac, you'll use AirPlay if your TV supports it, or a streaming device like an Apple TV. If your TV is older or doesn't have the right features, a streaming stick or box (Roku, Amazon Fire Stick, Google Chromecast, or Apple TV) will work with almost any TV and computer combination.

The difference between these methods matters: built-in casting is free and when ready, but only works if both devices support it. Streaming devices cost $25 to $100 upfront but work with nearly any TV and give you more control over what appears on screen. AirPlay is fast and reliable if you're in the Apple ecosystem, but won't work with Windows computers.

Key Takeaways

  • Windows 10 and 11 computers can cast to most modern TVs through the built-in Cast feature without buying anything extra.
  • Mac computers use AirPlay to cast to Apple TVs or AirPlay-compatible smart TVs, but this won't work with Windows devices.
  • Streaming devices like Roku, Fire Stick, and Google Chromecast work with any computer and TV combination, though they require a one-time purchase.
  • Casting your entire screen is different from casting a single app or video—some methods support one but not the other.
  • A stable Wi-Fi connection is required for all wireless casting methods; the computer and TV must be on the same network.

Casting from Windows 10 or 11 without extra hardware

Open the Windows notification panel by pressing Windows key + A on your keyboard. Look for a button labeled "Cast" or "Project" in the quick settings menu. If you don't see it, click "All settings" or scroll down to find it. Click the Cast button.

Your computer will search for nearby devices. Your TV should appear in the list if it's powered on, connected to the same Wi-Fi network, and supports Miracast (a wireless casting standard). Select your TV from the list. Your screen will appear on the TV within a few seconds. You can now use your computer normally—everything you do will show up on the TV.

If your TV doesn't appear, check that both devices are on the same Wi-Fi network. Restart your TV and try again. Some older TVs don't support Miracast; if yours doesn't show up after two attempts, you'll need a streaming device instead.

Casting from a Mac using AirPlay

Click the Control Center icon in the top-right corner of your screen (it looks like a rectangle with lines). Look for "Screen Mirroring" in the menu. Click it and select your Apple TV or AirPlay-compatible TV from the list. Your Mac screen will appear on the TV within seconds.

If you don't see Screen Mirroring in Control Center, your Mac model may not support it—check Apple's support page for your model year. If your TV doesn't appear in the list, make sure it's powered on and connected to the same Wi-Fi network as your Mac. Restart both devices and try again.

AirPlay only works between Apple devices and Apple TVs or TVs that explicitly support AirPlay. If your TV is not an Apple product and doesn't list AirPlay compatibility in its manual, you'll need a streaming device instead.

Using a streaming device for any computer and TV

A streaming device is a small box or stick that plugs into your TV's HDMI port and connects to your Wi-Fi. Popular options include Google Chromecast, Amazon Fire Stick, Roku, and Apple TV. These devices work with Windows, Mac, and Linux computers, and with nearly any TV made in the last 15 years.

After you plug in the device and complete the setup (following the instructions that come with it), casting is straightforward. On Windows, open the Cast menu and select your device. On Mac, open Control Center, click Screen Mirroring, and select your device. The setup process usually takes 10 to 15 minutes the first time.

Streaming devices cost between $25 and $100 depending on the brand and model. They're worth the cost if your TV doesn't support built-in casting, if you want to cast from multiple computers, or if you plan to use the device for other purposes like watching Netflix or YouTube on your TV.

Casting a single app or video instead of your whole screen

Some apps—like YouTube, Netflix, Spotify, and Chrome—have their own built-in cast buttons. Look for a rectangle with a curved line in the corner (the standard cast icon) inside the app. Click it and select your TV or streaming device. Only that app will appear on your TV; the rest of your screen stays private on your computer.

This method uses less Wi-Fi bandwidth than screen mirroring and lets you keep working on your computer while the video plays on the TV. Not all apps support casting—check the app's menu to see if a cast button exists. If it doesn't, you can always fall back to casting your entire screen instead.

Chrome browser also has a built-in cast feature. Click the three-dot menu in the top-right corner, select "Cast," and choose your device. Any website you're viewing will appear on the TV.

Troubleshooting when your TV doesn't appear

The most common reason casting fails is that the computer and TV are not on the same Wi-Fi network. Check your TV's network settings and your computer's Wi-Fi connection—they must both be connected to the same router. If you're on a guest network or a 5 GHz network while your TV is on 2.4 GHz, they won't see each other.

Restart both devices. Turn off your TV completely, wait 10 seconds, and turn it back on. Restart your computer. Then try casting again. This fixes most connection problems.

If your TV still doesn't appear, check whether it supports the casting method you're using. Windows built-in casting requires Miracast support. Mac AirPlay requires an Apple TV or an AirPlay-compatible TV. If your TV manual doesn't mention either of these, a streaming device is your only option.

If the connection keeps dropping during use, move your computer and TV closer to your Wi-Fi router, or reduce the distance between them. Walls, microwaves, and cordless phones can interfere with Wi-Fi signals and cause casting to stall or disconnect.

Wired casting as an alternative to wireless

If wireless casting is unreliable in your setup, you can use a wired connection instead. An HDMI cable runs directly from your computer to your TV. This method is faster and more stable than wireless casting, but you'll be tethered to the TV by a cable.

Most computers have an HDMI port. If yours doesn't (common on newer Macs and thin laptops), you'll need an adapter—USB-C to HDMI, Thunderbolt to HDMI, or DisplayPort to HDMI, depending on your computer's ports. These adapters cost $15 to $40.

Plug the HDMI cable into both your computer and TV, then select the correct HDMI input on your TV using the remote. Your screen will appear when ready. This method works with any computer and any TV that has an HDMI port, and it doesn't depend on Wi-Fi at all.

Frequently Asked Questions

Do I need to buy anything to cast from my computer to my TV?

Not if your TV was made in the last five years and supports Miracast (Windows) or AirPlay (Mac). If your TV is older or doesn't support wireless casting, a streaming device like a Roku or Fire Stick costs $25 to $100. A wired HDMI cable is another option and costs $10 to $20.

Can I cast to my TV while using my computer for other things?

Yes, if you cast a single app or video using the app's built-in cast button. If you cast your entire screen, everything you do on your computer appears on the TV, so you won't have privacy. Most people cast their whole screen when watching videos or presentations, and cast single apps when they want to keep working.

Why does my casting keep disconnecting?

Wi-Fi interference is the most common cause. Move your computer and TV closer to your router, or switch to a less crowded Wi-Fi channel in your router settings. If the problem persists, try a wired HDMI connection instead—it's more stable and doesn't depend on Wi-Fi.

Can I cast from my phone to the same TV?

Yes. Phones use the same casting standards as computers. Android phones cast through Google Cast, and iPhones use AirPlay. The setup is the same—look for the cast icon in the app or in your phone's quick settings menu.

What if my computer and TV are on different Wi-Fi networks?

They must be on the same network to cast wirelessly. Connect both to the same Wi-Fi network, then try again. If your TV can't connect to your main network, check whether your router is broadcasting on both 2.4 GHz and 5 GHz bands—some older TVs only support 2.4 GHz.