What Chromecast does and what you need before you start

Chromecast is a small device that plugs into your TV's HDMI port and lets you send video, music, and photos from your phone, tablet, or computer to your TV screen. Once it is set up, you can cast from apps like YouTube, Netflix, Spotify, and Google Photos by tapping a cast button — you do not need a remote or any cables beyond the initial power connection.

Before you begin, gather these things: your Chromecast device, a power source (either a USB cable plugged into your TV or a wall outlet), your TV with an available HDMI port, and a phone or tablet with the Google Home app installed. Your phone and TV will need to be on the same Wi-Fi network during setup, so have your Wi-Fi password ready.

The entire setup takes about five minutes. If you already have a Google account, the process is even faster — you can sign in with that account instead of creating a new one.

Key Takeaways

  • Plug your Chromecast into an HDMI port on your TV and connect power, then switch your TV to that HDMI input.
  • Download the Google Home app on your phone or tablet and open it to find your Chromecast device on your Wi-Fi network.
  • Follow the on-screen prompts to connect your Chromecast to your Wi-Fi and sign in with a Google account.
  • Once setup is complete, you can cast from any compatible app by tapping the cast icon and selecting your Chromecast device.
  • If your Chromecast does not appear in the Google Home app, restart both your TV and phone, then try again.

Plug in your Chromecast and switch to the right HDMI input

Take your Chromecast device and insert it into an HDMI port on the back or side of your TV. Most TVs have two to four HDMI ports; any of them will work. Push it in firmly until you hear or feel a click.

Next, connect power. Your Chromecast comes with a USB power cable. You can plug this into a USB port on your TV itself (if your TV has one), or plug the cable into a wall outlet using a USB power adapter. Once power is connected, a light on the Chromecast will turn on.

Now pick up your TV remote and look for a button labeled "Input," "Source," or "HDMI." Press it and select the HDMI port where you plugged in your Chromecast. Your TV screen should now show the Chromecast setup screen — it will display a code and ask you to set up the device using the Google Home app.

Download Google Home and start the setup process

On your phone or tablet, open the app store (Google Play Store on Android, App Store on iPhone or iPad) and search for "Google Home." Download and install the app, then open it.

When you open Google Home for the first time, it will ask you to sign in with a Google account. Use an existing account if you have one, or create a new one — either way takes less than a minute. After you sign in, the app will ask permission to access your location and nearby devices. Tap "Allow" so the app can find your Chromecast.

Make sure your phone is connected to the same Wi-Fi network that you want your Chromecast to use. The app will search for nearby devices automatically. When it finds your Chromecast, it will show up with a name like "Living Room" or "Bedroom" — these are default names you can change later.

Connect your Chromecast to Wi-Fi

Tap on your Chromecast when it appears in the Google Home app. The app will ask you to confirm the code shown on your TV screen — this code appears both on your TV and in the app to make sure you are setting up the right device. Tap "Yes, that's my code" to continue.

Next, the app will ask which Wi-Fi network you want to use. Select your home Wi-Fi network from the list and enter your Wi-Fi password. Your Chromecast will connect to the network — this usually takes 30 seconds to a minute. Do not unplug your Chromecast or close the app while it is connecting.

Once your Chromecast is connected, the app will ask if you want to set a name for it. You can call it "Living Room TV," "Bedroom," or anything else that makes sense to you. This name will appear whenever you cast from your phone, so pick something you will recognize if you have multiple Chromecasts in your home.

Sign in to your Google account on the Chromecast

After naming your device, the app will ask you to sign in with a Google account on the Chromecast itself. You can use the same account you used in the Google Home app, or a different one — it depends on whether you want to share this Chromecast with other people in your household.

If you want everyone in your home to cast to the same TV, use a shared account. If you want to keep your personal content separate, create a new account just for the Chromecast. The app will walk you through whichever option you choose.

Once you have signed in, your Chromecast setup is complete. The app will show a confirmation screen. You can close Google Home now — your Chromecast is ready to use.

Test your Chromecast by casting something

Open any app that supports casting — YouTube, Netflix, Spotify, Google Photos, or Chrome on your computer all work. Look for a cast icon, which looks like a rectangle with curved lines in the corner (like a TV with a signal). Tap or click it.

A menu will appear showing available devices. Select your Chromecast by name. Your content will now play on your TV instead of on your phone or computer. You can control playback from your phone — pause, skip, adjust volume — and the TV will respond.

If the cast icon does not appear in an app you are using, that app does not support Chromecast. Not every app has casting built in, but most major streaming services do.

Troubleshoot if your Chromecast does not show up

If the Google Home app does not find your Chromecast, the most common cause is that your phone and TV are on different Wi-Fi networks. Check that both are connected to the same network — look at your phone's Wi-Fi settings and compare the network name to what your TV shows during setup.

If they are on the same network and your Chromecast still does not appear, restart both devices. Unplug your Chromecast for 10 seconds, then plug it back in. At the same time, restart your phone by turning it off and back on. Open Google Home again and wait 30 seconds for it to search.

If your Chromecast still does not appear after a restart, try moving your phone closer to your TV. Sometimes Wi-Fi signal strength affects whether devices can find each other. Once your Chromecast is set up, distance does not matter as much — it just needs to be on the same network.

Frequently Asked Questions

Can I use Chromecast without a Google account?

No, you need a Google account to set up Chromecast. You can create a free account in the Google Home app if you do not already have one. Once setup is complete, you can cast from your phone without signing in again.

What if my TV does not have a USB port for power?

Use the USB power adapter that comes with your Chromecast and plug it into a wall outlet near your TV. The cable is long enough to reach most outlets. Make sure the outlet is not controlled by a wall switch, or your Chromecast will lose power when you turn off the switch.

Can I set up Chromecast on a phone that is not on Wi-Fi?

Your phone needs to be on the same Wi-Fi network as your TV during setup. After setup is complete, you can cast from anywhere as long as your phone and Chromecast are both on the same network — you do not need to be in the same room.

How do I change the name of my Chromecast after setup?

Open the Google Home app, tap and hold on your Chromecast device, then tap the settings icon (gear). Select "Device name" and type a new name. The change takes effect immediately.

What should I do if my Chromecast keeps disconnecting from Wi-Fi?

Move your Chromecast closer to your Wi-Fi router if possible, or check that your router is not overloaded with too many devices. If the problem continues, restart your Chromecast by unplugging it for 10 seconds, then plug it back in. If it still disconnects, try forgetting the Wi-Fi network in the Google Home app and reconnecting with your password again.