What you need before you start

Chromecast is a small device that plugs into your TV's HDMI port and turns any TV into a streaming screen. Unlike Roku or Fire Stick, Chromecast doesn't have its own remote or menu system — you control it from your phone, tablet, or computer instead. Before you plug anything in, make sure you have a Google account (the free kind you use for Gmail or YouTube), a smartphone or tablet running Android or iOS, and a home WiFi network that your Chromecast can reach.

You'll also need to know which HDMI port on your TV you're using, because you'll need to switch to that input after plugging in the device. If your TV is mounted on a wall and the HDMI ports are hard to reach, consider whether you have an extension cable or a different setup that would work better.

Key Takeaways

  • Chromecast plugs into an HDMI port and needs power from a USB cable or outlet adapter, plus a WiFi connection and a Google account.
  • The Google Home app on your phone walks you through connecting Chromecast to your WiFi network in about five minutes.
  • Once set up, you cast to Chromecast from apps like YouTube, Netflix, or Spotify by tapping the cast icon — you don't use a remote.
  • If Chromecast won't connect to WiFi, restart both the device and your router, then check that your phone is on the same network.

Plugging in and powering on

Chromecast comes with a short USB cable and a power adapter. Plug the USB cable into the port on the back of the Chromecast device, then plug the other end into the power adapter and into a wall outlet. If your TV has a USB port on the back, you can plug the cable there instead, but a wall outlet is more reliable because TV USB ports sometimes don't provide enough power.

Push the Chromecast into an available HDMI port on your TV — it's the flat rectangular port, usually on the back or side. The device is small and designed to sit flush against the TV or fit behind a mounted screen. Once it's plugged in, you should see a light on the device turn on. Switch your TV to that HDMI input using your TV remote. You'll see the Chromecast setup screen appear on your TV — a series of colored dots that pulse on the screen.

Connecting to WiFi using the Google Home app

On your phone or tablet, read the Google Home app from the Apple App Store or Google Play Store if you don't already have it. Open the app and sign in with your Google account. Tap the plus icon in the top left corner and select "Set up device," then choose "Set up a new device." The app will search for nearby Chromecast devices.

When your Chromecast appears in the list, tap it. The app will ask you to confirm that the code shown on your TV screen matches the code in the app — this is a security check to make sure you're setting up your own device. Tap "Yes" to confirm. The app will then ask which WiFi network you want to connect to. Select your home network from the list and enter your WiFi password. Chromecast will connect and the setup screen on your TV will change to show a confirmation message.

The app will ask you to name your Chromecast (like "Living Room" or "Bedroom") and choose which room it's in. This helps if you have multiple Chromecast devices in your home. You can also choose whether to let Google collect usage data — this is optional and won't affect how Chromecast works.

Casting from apps on your phone

Once Chromecast is set up, you control it by casting from apps you already use. Open any app that supports casting — YouTube, Netflix, Spotify, Disney+, and many others all work. Look for the cast icon, which looks like a rectangle with curved lines in the corner, usually in the top right or bottom right of the app screen.

Tap the cast icon and a list of available devices will appear. Select your Chromecast by name. The video, music, or show will start playing on your TV, and you can control it from your phone — pause, rewind, adjust volume, or skip forward. Your phone screen can go dark or you can use other apps while content plays on the TV. To stop casting, tap the cast icon again and select "Stop casting."

Casting from your computer or tablet

You can also cast from a computer using Google Chrome. Open Chrome and go to any website with video content. Click the three-dot menu in the top right, select "Cast," and choose your Chromecast from the list. The video will play on your TV and you can control it from your computer.

On an iPad or Android tablet, casting works the same way as on a phone — open an app that supports casting, tap the cast icon, and select your device. Some apps also let you cast your entire screen or tab from your computer, which is useful if you want to show a presentation or share a website on the TV.

Troubleshooting WiFi connection problems

If Chromecast won't connect to your WiFi during setup, the most common cause is that your phone and the Chromecast are trying to connect to different networks. Make sure your phone is on the same WiFi network you're trying to set up Chromecast on — check your phone's WiFi settings to confirm. If you have a 5GHz and 2.4GHz network with the same name, try connecting your phone to the 2.4GHz version first, as some Chromecast models work better on that band.

If the connection still fails, restart both devices. Unplug Chromecast from power for 30 seconds, then plug it back in. At the same time, restart your WiFi router by unplugging it for 30 seconds. Once both are back on, try the setup again. If you're still having trouble, check that your WiFi password is correct — a single wrong character will cause the connection to fail.

If Chromecast connects during setup but then loses connection later, move your router closer to the TV or move the Chromecast away from other electronics that might interfere with the signal, like microwaves or cordless phones. Walls and distance also weaken WiFi, so if your router is far from the TV, a WiFi extender might help.

What to do if casting doesn't work

If you tap the cast icon in an app and your Chromecast doesn't appear in the list, first check that your phone and Chromecast are on the same WiFi network. Open your phone's WiFi settings and confirm the network name. Then close the app completely and reopen it — sometimes the cast feature needs a moment to find the device.

If that doesn't work, restart your phone and restart Chromecast by unplugging it for 10 seconds. Make sure the Google Home app is up to date by checking your app store for updates. If you're using an older app that doesn't support casting, update it or try casting from a different app to test whether the problem is with the app or with Chromecast itself.

Frequently Asked Questions

Do I need a remote to use Chromecast?

No. Chromecast is controlled entirely from your phone, tablet, or computer using the cast feature in apps. You don't need a separate remote, though you can use your TV remote to adjust the volume or switch inputs if needed.

Can I use Chromecast without a Google account?

You need a Google account to set up Chromecast the first time using the Google Home app. After setup is complete, you can cast from any phone on your WiFi network, even if that phone isn't signed into the same Google account.

What if my WiFi password has special characters?

Enter it exactly as it appears, including capital letters, numbers, and symbols. If you're not sure of your password, check your router's label or log into your router's settings page from a computer. A single wrong character will prevent Chromecast from connecting.

Can I move Chromecast to a different room?

Yes. Unplug it, move it to the new TV, and plug it in. It will remember your WiFi network and reconnect automatically. If it doesn't, open the Google Home app, tap the Chromecast, go to settings, and select "Forget device," then set it up again in the new location.

Is Chromecast find?

Chromecast uses the same security as your WiFi network. The code confirmation during setup ensures only you can set up your device. Once it's set up, anyone on your WiFi can cast to it unless you change the settings in the Google Home app to restrict access.