Change Your Chromecast's WiFi Connection Through the Google Home App

To change which WiFi network your Chromecast connects to, open the Google Home app on your phone or tablet, find your Chromecast device in the list, tap the settings icon (gear symbol), and select Wi-Fi. The app will scan for available networks and let you choose a new one. Enter the password for that network, and your Chromecast will disconnect from the old network and connect to the new one within a few seconds.

This process works the same way whether you're switching to a different router, moving to a new home, or changing your WiFi password. You do not need to reset the device or start over from scratch — the Chromecast remembers all your apps, settings, and linked accounts.

Key Takeaways

  • Open Google Home, tap your Chromecast device, select the settings gear, then tap Wi-Fi to see available networks.
  • Choose your new network from the list and enter the password when prompted.
  • The connection usually completes within 10 to 15 seconds, and you can test it by casting something to the device.
  • If your Chromecast does not appear in the Google Home app, make sure your phone is on the same WiFi network as the device.
  • Changing the WiFi network does not erase your apps, accounts, or settings — only the network connection changes.

What to Do If Your Chromecast Does Not Show Up in Google Home

If you open Google Home and your Chromecast is not listed, the most common reason is that your phone is connected to a different WiFi network than the Chromecast. Move your phone to the same network the Chromecast is currently on, wait a few seconds, and refresh the Google Home app by swiping down from the top of the screen. The device should appear within 10 to 20 seconds.

If it still does not show up, restart your Chromecast by unplugging it from power for 30 seconds, then plugging it back in. While you wait for it to restart, also restart your WiFi router by unplugging it for 30 seconds. Once both devices are back on, open Google Home again and look for your Chromecast in the device list.

Changing Your WiFi Password Without Losing Your Chromecast

If you change your WiFi password at the router level, your Chromecast will lose its connection because it still has the old password stored. You will see it appear in Google Home as "offline" or "not connected." Open Google Home, tap the device, go to settings, select Wi-Fi, and choose your network again. This time, enter your new password. The Chromecast will reconnect within seconds.

You do not need to reset the device or remove it from your Google account. straightforward re-entering the new password is enough to restore the connection.

Switching to a 5GHz Network or a Different Band

Some routers broadcast both a 2.4GHz network and a 5GHz network, sometimes under the same name or different names. If you want to move your Chromecast to a specific band — for example, to reduce interference or improve speed — open Google Home, tap your device, go to settings, select Wi-Fi, and choose the network name you want. The Chromecast will connect to whichever band you select.

Most Chromecast models work on both bands, but older models may only support 2.4GHz. If you do not see your 5GHz network in the list, your Chromecast may not support it. In that case, stick with the 2.4GHz option or check your device's specifications to confirm which bands it handles.

Testing Your New Connection

After you enter the new WiFi password and the Chromecast reconnects, test it by casting something from your phone. Open any app that supports casting — YouTube, Netflix, Spotify, or Google Photos — and tap the cast icon. Your Chromecast should appear in the list. Select it and play something for 10 to 15 seconds to confirm the connection is stable.

If the cast starts but stops after a few seconds, or if the Chromecast does not appear in the cast menu, the connection may be weak. Move your router closer to the Chromecast, or move the Chromecast closer to the router, and try casting again. Walls, metal objects, and other wireless devices can interfere with the signal.

When to Reset Your Chromecast Instead

In most cases, changing the WiFi network through Google Home is all you need. However, if you have tried the steps above and your Chromecast still will not connect, or if you are giving the device to someone else and want to remove all your accounts and settings, a factory reset may help.

To reset your Chromecast, unplug it, then plug it back in while holding down the reset button (a small indented button on the back or bottom of the device) for about 15 seconds. The light will flash and change color. Once it stops flashing and returns to a steady color, the reset is complete. You will then need to set up the device again from scratch using the Google Home app, including choosing a WiFi network and signing in to your Google account.

Frequently Asked Questions

Do I need to be on the same WiFi network as my Chromecast to change it?

Yes. Your phone must be connected to the same WiFi network as your Chromecast for the Google Home app to find it and let you change the network. Once you are on the same network, you can then switch the Chromecast to a different network.

Will changing the WiFi network erase my apps or sign me out?

No. Changing the WiFi network only changes which network the device connects to. All your apps, settings, and Google account information stay the same. You will remain signed in and your apps will still be there.

What if I forgot my new WiFi password?

You will need to find or reset your WiFi password at the router before you can connect your Chromecast. Check the router itself — the password is often printed on a sticker on the back or bottom. If you cannot find it, log into your router's settings page through a web browser on your computer to view or reset the password.

How long does it take for the Chromecast to connect to a new network?

Usually between 10 and 15 seconds. If it takes longer than a minute, the password may be incorrect, or the network may be too far away. Double-check the password and try again, or move the Chromecast closer to the router.

Can I connect my Chromecast to a guest network?

Yes, if your router has a guest network, it will appear in the list of available networks in Google Home. Select it and enter the guest network password. The Chromecast will work the same way on a guest network as on your main network.