Connect Chromecast to your WiFi network in three steps

To connect Chromecast to WiFi, plug it into your TV's HDMI port and a power outlet, then use the Google Home app on your phone to find it and select your network. The whole process takes about five minutes. You will need your WiFi password and a phone or tablet with the Google Home app installed.

Chromecast cannot connect to WiFi on its own — it needs a device to guide it through the setup. That device is your phone or tablet, not your computer. Once Chromecast is connected, you can cast from any device on the same network.

Key Takeaways

  • Plug Chromecast into an HDMI port on your TV and into a power outlet before starting setup.
  • Use the Google Home app on your phone or tablet to find Chromecast and connect it to your WiFi network.
  • You will need your WiFi password and the name of your network during setup.
  • Chromecast works only on the 2.4 GHz band if your router broadcasts both 2.4 GHz and 5 GHz — it cannot use 5 GHz.
  • If setup fails, restart your Chromecast by unplugging it for 30 seconds, then plug it back in and try again.

What you need before you start

Gather these items before you begin: your Chromecast device, a TV with an available HDMI port, a power outlet near the TV, your phone or tablet, and your WiFi network name and password. If you do not know your WiFi password, check the sticker on the back or bottom of your router, or log into your router's settings page from a computer.

The Google Home app must be installed on your phone or tablet. read it from the Google Play Store if you use Android, or the App Store if you use an iPhone or iPad. You do not need a Google account to set up Chromecast, but you will need one to use most casting features later.

Step-by-step setup process

Step 1: Plug in your Chromecast. Insert the Chromecast into an HDMI port on your TV. Plug the power cable into the Chromecast and into a wall outlet or power strip. Your TV should turn to the HDMI input automatically, or you may need to switch to it manually using your TV remote. You will see the Chromecast setup screen appear on your TV — it shows a Google logo and a code.

Step 2: Open Google Home and find your device. Open the Google Home app on your phone or tablet. Tap the plus icon in the top left corner, then tap "Set up device." Choose "Set up a new device" and select your country. The app will search for nearby Chromecast devices. When it finds yours, tap it to select it. The code on your TV screen should match the code shown in the app — if it does, tap "Yes" to confirm.

Step 3: Connect to WiFi. The app will ask you to select your WiFi network from a list. Tap your network name. Enter your WiFi password exactly as it appears — passwords are case-sensitive. Tap "Connect." The app will show a progress bar while Chromecast connects. This usually takes 30 to 60 seconds. When the connection is complete, you will see a confirmation screen. Tap "Next" and give your Chromecast a name, or keep the default name and tap "Skip."

Troubleshooting connection problems

If the Google Home app cannot find your Chromecast, make sure both your phone and Chromecast are on the same WiFi network. If your phone is on a guest network and Chromecast is on your main network, they cannot see each other. Switch your phone to the same network as Chromecast and try again.

If Chromecast connects but then disconnects after a few minutes, your router may be dropping the connection. Restart your Chromecast by unplugging it for 30 seconds, then plug it back in. If the problem continues, move Chromecast closer to your router or remove obstacles between them. Thick walls and metal objects can weaken the WiFi signal.

If you see an error message during setup, restart both your phone and your Chromecast. Unplug Chromecast, wait 30 seconds, and plug it back in. Open Google Home again and start the setup process from the beginning. If setup still fails after two attempts, restart your router by unplugging it for one minute, then plug it back in and wait for it to fully restart before trying again.

WiFi band and network type requirements

Chromecast connects only to the 2.4 GHz WiFi band. If your router broadcasts both 2.4 GHz and 5 GHz bands, Chromecast will use only the 2.4 GHz band. You cannot force it to use 5 GHz. If your router broadcasts only 5 GHz, Chromecast will not connect — you will need to enable the 2.4 GHz band in your router settings or use a different router.

Chromecast works with standard WiFi networks that use WPA2 or WPA3 security. It does not work with open networks that have no password, or with networks that use WEP security (an older, outdated standard). If your network uses WEP, change your router's security setting to WPA2 or WPA3 before connecting Chromecast.

Some public WiFi networks, such as those in hotels or coffee shops, require you to open a web browser and log in or agree to terms before you can use the internet. Chromecast cannot complete this type of login, so it will not work on those networks. You can use Chromecast only on networks where you can connect directly without a browser login.

What to do after Chromecast connects

Once Chromecast is connected to WiFi, you can cast content from your phone, tablet, or computer to your TV. Open any app that supports casting — YouTube, Netflix, Spotify, Google Photos, and many others have a cast button. Tap the cast button, select your Chromecast from the list, and the content will appear on your TV.

You can also cast your entire phone or tablet screen to your TV. In Android, open Settings, tap "Connected devices," then "Connection preferences," then "Cast." Select your Chromecast. On iPhone or iPad, swipe down from the top right corner to open Control Center, tap "Screen Mirroring," and select your Chromecast.

Frequently Asked Questions

Can I connect Chromecast to a 5 GHz WiFi network?

No. Chromecast works only on 2.4 GHz WiFi. If your router broadcasts both bands, Chromecast will use only 2.4 GHz. If your router broadcasts only 5 GHz, you must enable the 2.4 GHz band in your router settings before Chromecast can connect.

Do I need a Google account to set up Chromecast?

No. You can set up Chromecast and cast basic content without a Google account. However, some features like voice control and personalized recommendations require a Google account. You can add an account after setup is complete.

What if I forget my WiFi password?

Check the sticker on the back or bottom of your router — it usually shows the network name and password. If the sticker is missing or unreadable, log into your router's settings page from a computer using the router's IP address (usually 192.168.1.1) and your router's admin password. You can also contact your internet provider for help.

Can I use Chromecast on a guest WiFi network?

Yes, if the guest network is a standard WiFi network with a password. However, if your phone is on the main network and Chromecast is on the guest network, they cannot see each other. Both devices must be on the same network to cast.

Why does Chromecast keep disconnecting from WiFi?

Chromecast may disconnect if it is too far from your router, if there are obstacles between them, or if your router is dropping connections. Move Chromecast closer to your router, remove obstacles, and restart both Chromecast and your router. If the problem continues, your router may need a firmware update — check your router manufacturer's website.