How to Connect a Chromecast Device to Your TV

What you need before you start

Adding a Chromecast to your TV takes about five minutes and requires three things: the Chromecast device itself, a TV with an available HDMI port, and a Wi-Fi network. You do not need a cable subscription, a smart TV, or any special equipment beyond what most households already have.

Check that your TV has at least one HDMI input port — these are the flat, rectangular slots usually on the back or side of the TV. If your TV is more than ten years old and has only older connection types, you may need an adapter, but most modern TVs have multiple HDMI ports. The Chromecast plugs directly into one of these ports.

You will also need a smartphone or tablet with the Google Home app installed, which is free on both Android and iOS. This app walks you through setup and lets you control what appears on your TV once the Chromecast is running.

Key Takeaways

Plug the Chromecast into an available HDMI port on your TV, then plug its power cable into a nearby outlet or USB port.
Switch your TV to the HDMI input where you plugged in the Chromecast using your remote's input or source button.
Open the Google Home app on your phone, tap the plus icon, and select "Set up device" to connect the Chromecast to your Wi-Fi.
Once setup is complete, you can cast video, music, and photos from your phone to your TV by tapping the cast icon in compatible apps.
If setup fails, restart your Chromecast by unplugging it for 30 seconds, then plugging it back in.

Plugging in the Chromecast hardware

Locate an HDMI port on your TV and insert the Chromecast device into it. The Chromecast is a small stick or dongle that slides straight in — it should fit snugly without forcing. Make note of which HDMI port number you used (usually labeled 1, 2, 3, or 4 on the TV itself or in the on-screen menu).

Next, connect the power cable. The Chromecast comes with a USB power adapter and cable. Plug the cable into the Chromecast, then plug the adapter into a wall outlet. Some TV models have a USB port on the back that can power the Chromecast instead, which reduces the number of cables you need. If you use the TV's USB port, make sure the TV is powered on for the Chromecast to stay on.

Wait about 30 seconds for the Chromecast to boot up. You should see a light on the device itself, and the TV screen may show a setup screen or a Chromecast logo.

Switching your TV to the correct HDMI input

Pick up your TV remote and look for a button labeled Input, Source, or sometimes HDMI. Press it. Your TV will display a menu showing all available inputs — you should see options like "HDMI 1", "HDMI 2", and so on.

Select the HDMI port where you plugged in the Chromecast. If you used HDMI 3, select that option. The TV screen should now show the Chromecast setup screen, which typically displays a code and instructions to set up the device using your phone.

If you do not see the setup screen, unplug the Chromecast, wait 10 seconds, and plug it back in. Then try switching to that HDMI input again.

Using the Google Home app to complete setup

On your smartphone or tablet, open the Google Home app. If you do not have it, read it from the Google Play Store (Android) or the Apple App Store (iOS) — it is free. Sign in with your Google account. If you do not have one, you can create one during the app setup.

Tap the plus icon (usually in the top left corner) and select Set up device. The app will ask whether you are setting up a new device or adding one to an existing home. Choose Set up a new device. The app will search for nearby Chromecast devices and should find the one you just plugged in.

Select your Chromecast from the list. The app will ask you to confirm the code shown on your TV screen matches the code in the app — this is a security step to make sure you are setting up your own device. Tap Yes when the codes match.

Connecting the Chromecast to your Wi-Fi network

The app will now ask you to select your Wi-Fi network from a list. Choose the network you use on your phone or computer. Enter the Wi-Fi password when prompted. The Chromecast will connect to your network — this usually takes 30 to 60 seconds.

Once connected, the app will ask you to name your Chromecast (for example, "Living Room TV" or "Bedroom Chromecast"). This name appears in the Google Home app and helps you identify which device you are casting to if you have more than one. You can change the name later if you want.

The app will then ask about your location and whether you want to link any streaming services. You can skip these steps for now — they are optional and you can set them up later. Tap Finish when setup is complete.

Testing your Chromecast with a cast command

Open any app on your phone that supports casting — YouTube, Netflix, Spotify, Google Photos, and many others all work. Look for a cast icon, which usually looks like a rectangle with curved lines in the corner. Tap it.

A menu will appear showing available devices. Select your Chromecast by name. The content from your phone should now appear on your TV. You can control playback from your phone — pause, play, skip, and adjust volume all work from the phone screen.

If the cast icon does not appear in an app, that app may not support Chromecast. You can still use your Chromecast to mirror your entire phone screen to the TV by opening the Google Home app, selecting your Chromecast, and tapping Cast my screen, though this uses more battery and works best on newer phones.

Troubleshooting common setup problems

If the Chromecast does not appear in the Google Home app during setup, restart it by unplugging the power cable for 30 seconds, then plugging it back in. Make sure your phone is connected to the same Wi-Fi network you want the Chromecast to use — the app cannot set up the device if your phone is on a different network.

If the setup code on the TV does not match the code in the app, unplug the Chromecast, wait 30 seconds, and start the setup process again. This usually means the device did not fully boot before you tried to set it up.

If your Chromecast connects to Wi-Fi but casting does not work, restart the Chromecast again and make sure your phone and TV are on the same Wi-Fi network. Some networks, especially in offices or apartment buildings, block devices from communicating with each other — if that is the case, you may need to contact your network administrator or try a different network.

Frequently Asked Questions

Can I use Chromecast on a TV that is not a smart TV?

Yes. Chromecast works on any TV with an HDMI port, whether the TV is smart or not. The Chromecast itself is what adds the casting ability — the TV just needs to display the picture.

What if my TV does not have a free HDMI port?

You can use an HDMI splitter or switch to add more ports, available at electronics retailers for $15 to $40. Alternatively, if another device (like a cable box or gaming console) is plugged into an HDMI port you do not use often, you can unplug it and use that port for the Chromecast instead.

Do I need a Google account to use Chromecast?

Yes, you need a Google account to set up the Chromecast using the Google Home app. You can create one for free if you do not already have one. Once setup is complete, other people can cast to your Chromecast without signing in.

Can I cast from a computer to my Chromecast?

Yes. On a Windows or Mac computer, open Chrome browser, click the three-dot menu, select "Cast", and choose your Chromecast. You can cast a tab or your entire screen. Some apps like Netflix also have a cast button in the web version.

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

Move the Chromecast closer to your Wi-Fi router if possible, or move the router closer to the TV. If your router is far away or blocked by walls, the signal may be weak. You can also try restarting the router by unplugging it for 30 seconds and plugging it back in.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.