Basic Setup: What You Need Before You Start

Chromecast setup takes about five minutes and requires three things: your Chromecast device, a TV with an HDMI port, and a smartphone or computer connected to the same Wi-Fi network you plan to use. Plug the Chromecast into an available HDMI port on your TV, then plug the USB power cable into the device. Turn on your TV and switch to the HDMI input where you plugged in the Chromecast — you should see a setup screen appear.

If you do not see a setup screen, restart the Chromecast by unplugging it for 10 seconds, then plugging it back in. The device will display a code on your TV screen once it is ready. Keep your TV on this screen while you move to your phone or computer.

Key Takeaways

  • read the Google Home app on your phone or visit google.com/chromecast on a computer to begin the setup process.
  • Your Chromecast and your phone must be on the same Wi-Fi network for setup to work, and the network name and password are the only information you need to provide.
  • Once setup is complete, you can cast video, music, photos, and your entire screen from any compatible app on your phone or from Chrome on your computer.
  • Chromecast works with Netflix, YouTube, Spotify, Google Photos, and hundreds of other apps — check the app itself to see if a cast button is available.
  • If casting stops working, restart your Chromecast by unplugging it, wait 30 seconds, and plug it back in.

Setting Up on Your Phone

On an Android or iPhone, read the Google Home app from the Google Play Store or Apple App Store. Open the app and tap the plus sign in the top left corner, then select "Set up device." Choose "Set up a new device" and the app will search for your Chromecast. When it finds your device, tap it to continue.

The app will ask you to confirm the code shown on your TV screen matches the code in the app — this confirms you are setting up the correct device. Tap "Yes" to proceed. Next, select your Wi-Fi network from the list and enter your Wi-Fi password. The Chromecast will connect to your network and read any needed updates, which can take a few minutes.

Once connected, you can name your Chromecast (for example, "Living Room TV" or "Bedroom") and assign it to a room in your home. This makes it easier to find if you have multiple Chromecast devices. Tap "Finish" when done.

Setting Up on a Computer

If you prefer to set up from a computer, open Chrome and visit google.com/chromecast. Click "Set up Chromecast" and follow the on-screen instructions. You will need to sign in with your Google account. The browser will search for your Chromecast on your network.

When your device appears, click it to confirm setup. Enter your Wi-Fi network name and password, then wait for the Chromecast to connect and update. The process is identical to phone setup — the only difference is which device you use to enter the information.

Casting Content From Your Phone

Once setup is complete, open any app that supports casting — Netflix, YouTube, Spotify, and Google Photos all have cast buttons. Look for a rectangular icon with a small triangle in the corner (the cast symbol). Tap it and select your Chromecast from the list of available devices.

The content will begin playing on your TV while your phone screen returns to normal. You can lock your phone, switch to other apps, or put it in your pocket — the video or music continues on your TV. To stop casting, tap the cast button again and select "Disconnect."

Not every app has a cast button. If you do not see one in an app you want to use, check the app's settings or help section to confirm casting is supported. Some apps require a paid subscription before casting is available.

Casting Your Entire Screen or Chrome Tab

You can send everything on your phone screen to your TV, not just content from apps with cast buttons. On Android, swipe down from the top twice to open Quick Settings, then tap "Cast." Select your Chromecast and your entire screen will appear on the TV. On iPhone, swipe down from the top right corner to open Control Center, tap "Screen Mirroring," and select your Chromecast.

From a computer, open Chrome and click the three-dot menu in the top right corner. Select "Cast" and choose your Chromecast. You can cast your entire screen or just the current tab. Casting a tab uses less bandwidth and lets you continue working on your computer without sending everything to the TV.

Troubleshooting Connection Problems

If your phone cannot find your Chromecast during setup, make sure both devices are on the same Wi-Fi network. Check your phone's Wi-Fi settings and confirm you are connected to the correct network. If your Chromecast is on a different network, it will not appear in the app.

If casting worked before but stops working now, restart your Chromecast by unplugging it from power for 30 seconds, then plugging it back in. While it restarts, also restart your phone or computer. Once both devices are back on, try casting again. If the problem continues, restart your Wi-Fi router by unplugging it for 30 seconds.

If your Chromecast is not responding or casting is very slow, move it closer to your Wi-Fi router or remove obstacles between them. Chromecast works best when the router is within 30 feet and there are no thick walls in between. If you have a 5GHz Wi-Fi network available, try connecting your Chromecast to that instead of 2.4GHz — it is often faster.

Changing Wi-Fi Networks and Other Settings

To change which Wi-Fi network your Chromecast uses, open the Google Home app and tap and hold your Chromecast device. Tap the settings icon (gear symbol) in the top right, then select "Wi-Fi." Choose a new network and enter the password. Your Chromecast will disconnect from the old network and connect to the new one.

In the same settings menu, you can change your device name, restart the Chromecast, factory reset it, or check for software updates. Most Chromecast devices update automatically when connected to power and Wi-Fi, but you can also check manually. If you are having persistent problems, a factory reset will erase all settings and return the device to its original state — you will need to set it up again from scratch.

Frequently Asked Questions

Do I need a Google account to use Chromecast?

You need a Google account to set up Chromecast through the Google Home app or the website. However, once setup is complete, anyone on your Wi-Fi network can cast to it without signing in. Guests can use your Chromecast as long as they are connected to your Wi-Fi.

Can I use Chromecast without Wi-Fi?

No, Chromecast requires a Wi-Fi connection to work. It does not have a wired ethernet port or Bluetooth option for casting. If your Wi-Fi is down, your Chromecast will not function until the network is restored.

What happens if I factory reset my Chromecast?

A factory reset erases all settings, including your Wi-Fi network, device name, and room assignment. You will need to set it up again from the beginning using the Google Home app or the website. Your casting history and saved preferences are also cleared.

Can I control Chromecast with a remote?

Chromecast does not come with a remote. You control it entirely through your phone, computer, or voice commands if you have a Google Home speaker or display on the same network. Some third-party remotes exist, but they are not made by Google.

Why is casting slow or buffering?

Slow casting usually means your Wi-Fi signal is weak or your network is congested. Move your router closer to your Chromecast, reduce the number of devices using Wi-Fi, or switch to a less crowded Wi-Fi channel. If you are casting from a computer, a wired ethernet connection to your router will improve performance.