The fastest way to cast YouTube from your PC to your TV
The simplest method is to use Chromecast, Google's built-in casting feature that works with most modern TVs and streaming devices. If your TV has Chromecast built in or you own a Chromecast device, you can send YouTube from your PC browser to your TV in about three taps. The video plays on your TV while you control it from your computer — you can pause, skip, or adjust volume from either device.
If you don't have Chromecast, you have other options: HDMI cable (the most reliable), screen mirroring through Windows or your TV's native software, or casting through a streaming device like a Roku, Fire Stick, or Apple TV. Each method works differently and has trade-offs in setup time and control.
Key Takeaways
- Chromecast is the fastest method if your TV supports it — you cast directly from the YouTube website or app without mirroring your entire screen.
- An HDMI cable from your PC to your TV works on any television and gives you full control, but requires your PC to be physically near the TV.
- Windows screen mirroring lets you send your entire PC display wirelessly, though it works best on newer TVs and can drain your laptop battery quickly.
- Streaming devices like Roku and Fire Stick have their own YouTube apps, so you can cast from your phone or PC without needing Chromecast.
- Some smart TVs have built-in YouTube apps, which means you can open YouTube directly on the TV without casting from your PC at all.
Casting with Chromecast (wireless, fastest)
Open YouTube in your web browser on your PC. Look for the Cast button — it looks like a rectangle with a curved line in the bottom left corner. You'll find it in the bottom right of the video player, next to the fullscreen button. Click it.
A menu will appear showing all Chromecast devices on your network. Select your TV or Chromecast device by name. The video will start playing on your TV within a few seconds. Your PC browser will show playback controls — pause, play, skip forward or back, and volume. You can close the browser tab or even lock your PC; the video keeps playing on the TV.
If you don't see the Cast button, your browser may not be updated. Chromecast works in Chrome, Edge, and Firefox on Windows. Make sure your PC and TV are on the same Wi-Fi network — if they're on different networks, they won't find each other.
Using an HDMI cable (wired, most reliable)
Connect an HDMI cable from your PC's HDMI port to your TV's HDMI port. If your PC doesn't have an HDMI port, you'll need a USB-C to HDMI adapter or a DisplayPort to HDMI adapter (check your PC's ports first). Turn on your TV and switch it to the HDMI input where you plugged in the cable.
Your PC screen should appear on the TV automatically. If it doesn't, right-click on your desktop and look for "Display settings" or "Graphics settings." Open YouTube in your browser and play a video. The video will appear on both your PC and TV. Use your keyboard, mouse, or a wireless keyboard to control playback.
The HDMI method works on any TV made in the last 15 years and doesn't depend on Wi-Fi. The downside is that your PC needs to be close enough to reach the TV with a cable, and you're limited by cable length. HDMI cables are inexpensive (usually $10–20) and reliable.
Screen mirroring through Windows (wireless, uses more battery)
Press Windows key + K on your keyboard. A "Connect" panel will open on the right side of your screen. Wait a few seconds for your TV to appear in the list. Click your TV's name to connect.
Your entire PC screen will mirror to the TV. Open YouTube and play a video. Everything you do on your PC — typing, clicking, scrolling — will show on the TV. You control it all from your PC keyboard and mouse.
This method works on most TVs made after 2015 that support Miracast, a wireless mirroring standard. It drains your laptop battery faster than Chromecast because your PC is constantly sending the entire display over Wi-Fi. If the connection drops, press Windows key + K again to reconnect. Make sure your PC and TV are on the same Wi-Fi network.
Casting through a Roku, Fire Stick, or Apple TV
If you own a Roku, Amazon Fire Stick, or Apple TV, you don't need Chromecast. These devices have their own YouTube apps built in. Open the YouTube app on your device and search for the video you want. Play it directly on the TV — no casting from your PC needed.
If you want to cast from your PC anyway, Roku and Fire Stick have their own casting buttons in the YouTube website. Open YouTube in your browser, click the Cast button (same rectangle icon), and select your Roku or Fire Stick from the list. Apple TV works through AirPlay if your PC is a Mac, but Windows PCs cannot cast directly to Apple TV — you'll need to use HDMI or screen mirroring instead.
These devices are useful if you already own them, but if you're buying something specifically to cast YouTube, Chromecast is usually the cheapest option.
Using your TV's built-in YouTube app
Many modern smart TVs (Samsung, LG, Sony, TCL, and others) have YouTube built in. Press the Home button on your TV remote, look for the YouTube app, and open it. You can search for and play videos directly on the TV without casting from your PC at all.
This is the simplest method if your TV supports it — no cables, no devices, no PC involved. The downside is that you're controlling YouTube with your TV remote instead of your keyboard and mouse, which can be slower for searching. If you want to use your PC to control playback, you can still use Chromecast or screen mirroring instead.
Troubleshooting common casting problems
The Cast button doesn't appear: Make sure you're using Chrome, Edge, or Firefox. Other browsers don't support Chromecast. Refresh the YouTube page. If the button still doesn't show, your browser may be outdated — check for updates in your browser settings.
Your TV doesn't appear in the Cast menu: Check that your PC and TV are on the same Wi-Fi network. Restart your TV and PC. If your TV is on a 5 GHz Wi-Fi network and your PC is on 2.4 GHz (or vice versa), they won't see each other — switch both to the same band in your router settings.
The video lags or keeps buffering: Move your PC closer to your Wi-Fi router or TV. Casting uses Wi-Fi bandwidth, so if other devices are downloading large files, YouTube will stall. Close other apps on your PC that might be using the network. If you're far from the router, an HDMI cable is more reliable.
The connection drops after a few minutes: Your PC may be going to sleep. Open your PC's power settings and set it to never sleep while plugged in. If you're on battery, set it to sleep after 30 minutes or longer.
Frequently Asked Questions
Can I cast YouTube while using other apps on my PC?
Yes. With Chromecast, your PC controls the video but the video plays on the TV, so you can use your PC for other things. With screen mirroring, everything on your PC shows on the TV, so opening other apps will display them on the TV too. If you want privacy while casting, use Chromecast.
Do I need a paid subscription to cast YouTube?
No. Casting itself is free. YouTube videos play the same way whether you cast them or watch them on your PC. If a video requires YouTube Premium to watch (very rare), that restriction applies whether you cast or not.
What if my TV is too old for Chromecast?
Use an HDMI cable, which works on any TV. If you want wireless casting on an older TV, buy a Chromecast device (around $30) and plug it into an HDMI port. Roku and Fire Stick devices also work on older TVs and cost $30–50.
Can I cast YouTube from my phone to the TV using my PC?
No. Casting from your phone goes directly to the TV or Chromecast device — your PC isn't involved. If you want to cast from your phone, use the Cast button in the YouTube app on your phone instead.
Will casting YouTube use a lot of data?
Casting uses the same amount of data as watching YouTube on your PC — it depends on video quality. If you're on a limited internet plan, lower the video quality in YouTube's settings (click your profile picture, then Settings, then Playback and performance) to reduce data use.