What you need before you start

To connect a Chromecast to your WiFi, you will need three things: the Chromecast device itself plugged into a TV or monitor via HDMI, your WiFi network name and password, and a smartphone or computer that is already connected to that same network. The Chromecast cannot connect to WiFi on its own — it needs another device to tell it which network to join and provide the password.

Make sure your Chromecast is powered on. You should see a white light on the device, and the TV or monitor it is plugged into should display the Chromecast setup screen — usually a colorful Google logo and a message saying "Set up your Chromecast" or "Ready to cast". If you see nothing on the screen, check that the HDMI cable is fully inserted and the TV input is set to the correct HDMI port.

Key Takeaways

  • You connect a Chromecast using a phone or computer that is already on your WiFi, not by using the Chromecast itself.
  • read the Google Home app on your phone or visit google.com/chromecast on a computer to start the connection process.
  • The app will search for your Chromecast and ask you to confirm a code shown on your TV screen to prove you own the device.
  • After you confirm the code, the app will ask for your WiFi password and send it to the Chromecast so it can connect.
  • The whole process usually takes three to five minutes, and you only need to do it once.

Connecting with a smartphone or tablet

On your phone or tablet, open the Google Play Store (Android) or App Store (iPhone), search for "Google Home", and install the app. Once it is installed, open Google Home and sign in with the Google account you want to use with this Chromecast. You can use any Google account — it does not have to match the account on your phone.

Tap the plus icon or "Create" button in the top left corner of the app, then select "Set up device". Choose "Set up a new device" and the app will begin searching for your Chromecast. When it finds it, the app will show you the name of the Chromecast (usually something like "Living Room" or a model number). Tap on it to continue.

The app will now ask you to confirm a code. Look at your TV screen — you will see a four-digit code displayed. Type that same code into the app on your phone. This step proves you are in the same room as the Chromecast and that you own it. Once you enter the code, tap "Yes, I see it" or "Confirm".

The app will now ask you to select your WiFi network from a list. Find your network name in the list and tap it. When prompted, enter your WiFi password exactly as it is — passwords are case-sensitive, so uppercase and lowercase letters matter. Tap "Connect" and wait for the app to send the password to your Chromecast. You should see a confirmation message within 30 seconds.

Connecting with a computer

If you prefer to use a computer, open any web browser and go to google.com/chromecast. The page will ask you to sign in with your Google account. Once you are signed in, click "Set up device" and the browser will search for your Chromecast on your network.

When the browser finds your Chromecast, it will display the same four-digit code confirmation screen. Look at your TV and enter the code shown there into the browser window on your computer. After you confirm the code, the browser will ask you to select your WiFi network and enter your password. Choose your network, type your password carefully, and click "Connect".

The browser will show a progress bar while it sends the information to your Chromecast. Once the connection is complete, you will see a confirmation message and your Chromecast will restart. This is normal — let it finish restarting, which usually takes one to two minutes.

What to do if the connection fails

If the app or browser cannot find your Chromecast, make sure the Chromecast is plugged in and powered on, and that your phone or computer is connected to the same WiFi network as the Chromecast is trying to join. The Chromecast will not appear in the search if your phone is on a different network.

If you entered the wrong WiFi password, the Chromecast will fail to connect and the setup screen on your TV will return. Start the process again from the beginning — open the Google Home app or go to google.com/chromecast, and the app or browser should find the Chromecast again since it is still in setup mode. This time, double-check your password before submitting it.

If your WiFi network does not appear in the list, your network may be hidden. In that case, look for an option in the app or browser that says "Add a network manually" or "Enter network name". Type your network name exactly as it is set up in your router, then enter your password and try again.

Connecting to a 5GHz or 2.4GHz network

Some routers broadcast two separate networks: one at 5GHz (faster but shorter range) and one at 2.4GHz (slower but longer range). If your router does this, you will see both network names in the list when you set up your Chromecast. Most Chromecast models work better on 2.4GHz, especially if the device is far from your router or in a different room.

If you have a choice between the two, start by connecting to the 2.4GHz network. If your Chromecast keeps disconnecting or loses signal, you can always set it up again and switch to 5GHz. Some newer Chromecast models support both equally well, so you may not notice a difference.

Testing your connection

Once the setup is complete, your Chromecast should appear in the Google Home app with a green checkmark or "Connected" label. To test that everything is working, open any app that supports casting — YouTube, Netflix, Spotify, or Google Photos are common choices. Look for the cast icon (a rectangle with a WiFi symbol in the corner) and tap it. Your Chromecast should appear in the list of available devices. Tap it and the app should send content to your TV.

If you do not see the cast icon in an app, that app may not support casting. Try a different app to confirm your Chromecast is working. If you see the cast icon but your Chromecast does not appear in the list, your phone and Chromecast may have drifted onto different networks — this sometimes happens if your phone switches between 5GHz and 2.4GHz. Restart your phone and try again.

Frequently Asked Questions

Do I need a Google account to use Chromecast?

Yes, you need a Google account to set up the Chromecast and to use the Google Home app. However, once it is set up, other people in your home can cast to it without signing in — they just need to be on the same WiFi network.

Can I connect my Chromecast to a guest WiFi network?

Yes, you can set up your Chromecast on a guest network the same way you would on your main network. Keep in mind that if the guest network is separate from your main network, devices on your main network will not be able to cast to the Chromecast unless they also connect to the guest network.

What if I forget my WiFi password?

You will need to reset your Chromecast and set it up again with the correct password. To reset it, hold down the button on the back of the Chromecast for about 15 seconds until the light blinks orange. Then start the setup process from the beginning. If you do not know your WiFi password, check your router — it is usually printed on a sticker on the bottom or back.

Can I move my Chromecast to a different room and keep it on the same WiFi?

Yes, once your Chromecast is connected to your WiFi, you can unplug it and move it to any room in your home. As long as it stays within range of your WiFi signal, it will stay connected. If it loses signal in the new location, you may need to move it closer to your router or set it up again.

Why does my Chromecast keep disconnecting from WiFi?

This usually happens if the Chromecast is too far from your router or if there is interference from other devices. Try moving the Chromecast closer to the router, or switch it to the 2.4GHz network if you have a dual-band router. If the problem continues, restart your router by unplugging it for 30 seconds, then plugging it back in.