What Chromecast does and how to get it working

Chromecast is a small device that plugs into your TV's HDMI port and connects to your home Wi-Fi network. Once it's set up, you can send video, music, photos, and web pages from your phone, tablet, or computer directly to your TV screen. You don't need a cable subscription or a separate remote — your phone becomes the control.

The device itself is about the size of a thumb drive. It needs two things to work: an HDMI port on your TV (nearly all modern TVs have at least one) and a power source. Chromecast plugs into power via a USB cable that comes in the box, though some TVs have a USB port on the back that can power it. If your TV doesn't have a USB port, you'll use the wall adapter included in the box.

Setup takes about five minutes. You'll read the Google Home app on your phone, plug in the Chromecast, and connect it to your Wi-Fi. Once that's done, any app on your phone that supports Chromecast will have a cast button — usually a rectangle with curved lines in the corner. Tap it, pick your Chromecast, and what's on your phone appears on your TV.

Key Takeaways

  • Chromecast plugs into your TV's HDMI port and needs Wi-Fi to work; setup happens through the Google Home app on your phone.
  • You control what plays on your TV from your phone, tablet, or computer — the device itself has no remote or buttons.
  • Apps like Netflix, YouTube, Spotify, and Chrome browser all have built-in cast buttons that let you send content to your TV in one tap.
  • Your phone doesn't have to stay on the same screen while casting; you can lock it, use other apps, or even put it away once playback starts.
  • Chromecast works only when both the device and your phone are connected to the same Wi-Fi network.

Plugging in and powering the device

Find an HDMI port on the back or side of your TV. Most TVs have two or three. If your TV is wall-mounted, the ports are usually on the back; if it's on a stand, check both the back and the sides. Plug the Chromecast into any available HDMI port — it doesn't matter which one.

Next, connect power. The Chromecast comes with a USB power cable. If your TV has a USB port on the back (look for a small rectangular slot), plug the cable into it. If not, use the wall adapter that came in the box — plug the USB cable into the adapter, then plug the adapter into a nearby outlet. The Chromecast will light up once it has power.

Switch your TV to the HDMI input where you plugged in the Chromecast. Use your TV remote to find the input or source button (usually labeled HDMI, Input, or Source). You should see the Chromecast setup screen appear on your TV — it will show a four-digit code and ask you to set up the device using the Google Home app.

Downloading the Google Home app and connecting to Wi-Fi

On your phone or tablet, go to the App Store (iPhone) or Google Play Store (Android) and search for "Google Home." read and open the app. You'll be asked to sign in with a Google account — use the same account you use for Gmail, YouTube, or any other Google service. If you don't have one, you can create one for free.

Once you're signed in, the app will search for nearby Chromecast devices. When it finds yours, tap it. The app will show you the four-digit code from your TV screen — confirm that the code matches what you see on the TV, then tap "Yes" to continue. This step confirms that you're setting up the device and not someone else.

The app will now ask you to select your Wi-Fi network and enter your password. Choose the same network your phone is connected to — Chromecast must be on the same Wi-Fi as your phone to work. Enter your Wi-Fi password exactly as it is (uppercase and lowercase letters matter). The Chromecast will connect, and you'll see a confirmation screen. You're done with setup.

Casting from your phone or tablet

Open any app that supports Chromecast — Netflix, YouTube, Spotify, Google Photos, Chrome browser, and many others all work. Look for the cast button, which looks like a rectangle with curved lines in the bottom right or top right corner of the app. Tap it.

A menu will appear showing available Chromecast devices on your network. Tap the name of your Chromecast. The content will now play on your TV instead of your phone. You'll see a small cast icon appear in the app, showing that casting is active.

Once casting starts, you can control playback from your phone — pause, play, skip forward or back, adjust volume. You can also lock your phone, switch to a different app, or put your phone away entirely. The video or music will keep playing on your TV. To stop casting, tap the cast button again and select "Stop casting."

Casting from a web browser on your computer

If you're using Google Chrome on a Windows or Mac computer, you can cast web pages and videos directly to your TV. Open Chrome and click the three vertical dots in the top right corner. Select "Cast" from the menu.

A window will open showing your available Chromecast devices. Click the one you want to use. You'll see a "Cast" button appear in the top right of your browser. Click it to start casting. You can now browse the web on your computer and send full web pages or videos to your TV. The cast button shows you which device is active.

To cast a specific tab instead of your entire screen, click the "Cast" button, then select "Cast tab" instead of "Cast desktop." This is useful if you want to browse other tabs on your computer while one tab plays on your TV.

Troubleshooting common problems

If the Chromecast doesn't appear in the Google Home app, make sure both your phone and the device are connected to the same Wi-Fi network. Check your phone's Wi-Fi settings and confirm you're on the right network. If you're on a guest network or a different band (2.4 GHz vs. 5 GHz), the Chromecast may not show up. Restart your Wi-Fi router by unplugging it for 30 seconds, then plug it back in.

If casting starts but the video stutters or stops, move your phone or Chromecast closer to your Wi-Fi router, or reduce the number of devices using your Wi-Fi. Streaming video uses a lot of bandwidth. If the problem continues, restart the Chromecast by unplugging it for 10 seconds and plugging it back in.

If the cast button doesn't appear in an app you're using, that app may not support Chromecast. Check the app's settings or help section to confirm. Most major streaming apps support it, but smaller or older apps may not. As a workaround, you can cast your entire phone screen to the TV — open the Google Home app, tap your Chromecast, then tap "Cast my screen" to send everything on your phone to your TV.

What you can and cannot do with Chromecast

Chromecast works with any app that has built-in cast support — Netflix, YouTube, Hulu, Disney+, Spotify, Pandora, Google Photos, and hundreds of others. You can also cast web pages from Chrome browser, or cast your entire phone or computer screen. This means you can send anything on your screen to your TV, even if the app doesn't have a cast button.

Chromecast does not work with cable TV boxes, satellite receivers, or live TV apps that don't support casting. You cannot use it to watch cable channels unless the cable provider's app has a cast button built in. Some apps, like Apple TV+, require a paid subscription to use Chromecast, but the device itself is just the hardware — the app controls what you can do.

Chromecast also cannot be used as a traditional HDMI input for a cable box or game console. If you want to connect a cable box or gaming system to your TV, you'll need to plug it directly into a different HDMI port. Chromecast is for streaming from the internet, not for connecting other devices.

Frequently Asked Questions

Do I need a Google account to use Chromecast?

Yes, you need a Google account to set up Chromecast using the Google Home app. You can create one for free if you don't already have one. Once setup is complete, anyone on your Wi-Fi network can cast to the device without signing in again.

Can multiple people cast to the same Chromecast at the same time?

Only one person can cast at a time. If two people try to cast simultaneously, the second request will take over and interrupt the first. However, multiple people can take turns casting throughout the day without any problem.

What happens if I lose Wi-Fi while casting?

If your Wi-Fi drops while you're casting, playback will stop. Once your Wi-Fi comes back, you'll need to start casting again. The Chromecast itself stays connected to your TV, but it needs Wi-Fi to receive the stream from your phone or computer.

Can I use Chromecast with a TV that doesn't have HDMI?

No, Chromecast requires an HDMI port. Older TVs without HDMI cannot use Chromecast. If your TV only has composite cables (red, white, and yellow), you would need a different streaming device or to upgrade your TV.

Does casting use a lot of data from my phone plan?

Chromecast streams over Wi-Fi, not your phone's cellular data, so it doesn't count against your phone plan. Your phone just sends a signal telling the Chromecast what to play; the Chromecast downloads the actual video from the internet directly.