Adding a Chromecast to Google Home in three steps
A Chromecast connects to Google Home through the Google Home app on your phone or tablet. The device itself plugs into your TV's HDMI port and your power outlet. Once both are set up, Google Home recognizes the Chromecast and lets you cast video, music, and photos to your TV by voice command or from your phone.
The process takes about five minutes if your Wi-Fi network is stable and both devices are within range. You will need the Google Home app (free, available on iOS and Android), your Chromecast, and a TV with an available HDMI port.
Key Takeaways
- Your Chromecast must be plugged in and connected to the same Wi-Fi network as your Google Home device or the phone running the Google Home app.
- The Google Home app automatically detects a new Chromecast on your network within a few seconds of powering it on.
- You assign the Chromecast a room name (like "Living Room" or "Bedroom") so Google Home knows which TV you are casting to.
- Once added, you can cast to the Chromecast by voice ("Hey Google, play Netflix on the living room TV") or through the Google Home app.
What you need before you start
Have your Chromecast unpacked and ready, along with its power cable. Plug the Chromecast into an HDMI port on your TV—use any port that works, but note which one you used. Plug the power cable into the Chromecast and into a wall outlet or power strip near your TV.
On your phone or tablet, open the Google Home app. If you do not have it, read it from the App Store (iOS) or Google Play (Android). Make sure your phone is connected to the same Wi-Fi network you want the Chromecast to use. Your Google Home speaker or display should also be on the same network.
Turn on your TV and switch to the HDMI input where you plugged in the Chromecast. You should see a setup screen appear on the TV within 30 seconds.
How to add the Chromecast through the Google Home app
Open the Google Home app on your phone. Tap the + button (usually in the top left corner) and select "Set up device." Choose "Set up a new device" from the menu. The app will search for nearby devices on your Wi-Fi network.
When the app finds your Chromecast, it will show the device name (often something like "Chromecast" or "Chromecast (2nd gen)"). Tap it to begin pairing. The app will ask you to confirm a code that appears both on your TV screen and in the app—this confirms you are setting up the right device. Tap "Yes" to confirm.
Next, choose which Wi-Fi network the Chromecast should connect to. Select the same network your phone is using. Enter the Wi-Fi password if prompted. The Chromecast will connect and the app will show a progress bar.
Assigning a room and name to your Chromecast
Once the Chromecast connects, the app will ask you to assign it to a room. This is how Google Home knows which TV you mean when you give a voice command. Tap the room where the TV is located—"Living Room," "Bedroom," "Kitchen," or another room in your home.
You can also give the Chromecast a custom name if you want something more specific than the default. For example, "Living Room TV" or "Guest Bedroom Chromecast." This name will appear in the Google Home app and in voice commands.
Tap "Next" or "Done" (the button text varies by app version). The setup is complete. Your Chromecast is now part of your Google Home system.
Testing your Chromecast connection
In the Google Home app, find your newly added Chromecast in the device list. Tap it to open its controls. You should see options to adjust volume, change input, or cast content. Try casting a short video or song from your phone to the TV to confirm everything is working.
You can also test voice commands. Say "Hey Google, play [show or song name] on [room name]" (for example, "Hey Google, play The Office on the living room TV"). Your Google Home device should hear the command and send the content to your Chromecast.
Troubleshooting if the Chromecast does not appear
If the Google Home app does not find your Chromecast, check that the device is powered on and that your TV is set to the correct HDMI input. Look for a light on the Chromecast itself—it should be lit or blinking. If the light is off, the power cable may not be fully connected.
Restart your Wi-Fi router by unplugging it for 30 seconds, then plugging it back in. Wait for it to fully restart (usually one to two minutes). Power off the Chromecast, wait 10 seconds, and power it back on. Then open the Google Home app and try the setup again.
If your phone keeps disconnecting from Wi-Fi during setup, move closer to your router. Some older routers struggle with multiple devices connecting at once. If the problem persists, restart your phone and try again.
Casting to your Chromecast after setup
Once your Chromecast is added to Google Home, you have two ways to send content to your TV. The easiest is voice: say "Hey Google, play [content] on [room name]." Google Home works with Netflix, YouTube, Spotify, Google Photos, and many other apps.
You can also cast from your phone. Open any app that supports casting (YouTube, Netflix, Spotify, Google Photos, and others). Look for a Cast icon—usually a rectangle with a Wi-Fi symbol in the corner. Tap it and select your Chromecast from the list. The content will start playing on your TV.
Frequently Asked Questions
Can I add a Chromecast if I do not have a Google Home speaker?
Yes. You only need the Google Home app on your phone or tablet. The app itself acts as the control center for your Chromecast. A Google Home speaker or display is helpful for voice commands, but not required to set up or use the device.
What if my Chromecast keeps disconnecting from Wi-Fi?
Move the Chromecast closer to your router if possible, or move the router closer to your TV. Thick walls and distance weaken the signal. If the problem continues, restart your router and the Chromecast. Some older routers also struggle with many devices at once—check if other devices are using a lot of bandwidth.
Can I add multiple Chromecasts to one Google Home account?
Yes. Repeat the setup process for each Chromecast and assign each one to a different room or give it a unique name. Google Home will then let you choose which TV to cast to by room name or device name.
Do I need to set up the Chromecast on the TV first before adding it to Google Home?
No. The Google Home app handles all the setup. When you power on the Chromecast, it enters setup mode automatically. Just follow the steps in the Google Home app and you are done.
What happens if I forget the Wi-Fi password during setup?
If the Chromecast does not connect, you can restart the setup process. Unplug the Chromecast for 10 seconds and plug it back in. It will return to setup mode and you can try again with the correct password. You can also check your router's settings or contact your internet provider if you need to recover your Wi-Fi password.