What Chromecast does and how to start using it

Chromecast is a small device that plugs into your TV's HDMI port and connects to your home Wi-Fi network. Once set up, you can send video, music, photos, and web pages from your phone, tablet, or computer directly to your TV screen. The device itself does not have a remote — you control it entirely from your other devices.

To use Chromecast, you need three things: the Chromecast device, a TV with an available HDMI input, and a Wi-Fi network that your phone or computer can also reach. The setup takes about five minutes and happens through the Google Home app on your phone.

The main benefit is simplicity. You do not need to buy a separate remote, learn a new interface, or plug cables into your TV. If an app on your phone supports Chromecast, you will see a cast icon (usually a rectangle with curved lines in the corner) and can send the content to your TV with one tap.

Key Takeaways

  • Chromecast plugs into your TV's HDMI port and requires only a Wi-Fi connection to work — no cables or separate remote needed.
  • You set up Chromecast through the Google Home app on your phone by connecting it to your Wi-Fi network and naming the device.
  • Apps like YouTube, Netflix, Spotify, and Chrome browser all support casting, but you must open the app on your phone and tap the cast icon to send content to your TV.
  • Your phone and Chromecast must be on the same Wi-Fi network for casting to work, but you can leave your phone in your pocket once the content starts playing.
  • Chromecast works with Android phones, iPhones, iPads, Mac computers, and Windows computers, though some features vary by device type.

Setting up Chromecast for the first time

Plug the Chromecast into an available HDMI port on your TV, then plug the power cable into a nearby outlet or USB port. Turn on your TV and switch to the HDMI input where you plugged in the Chromecast. You should see a setup screen appear on your TV that says "Set up your Chromecast" or shows a code.

On your phone or tablet, read the Google Home app if you do not already have it. Open the app and tap the plus sign (+) in the top left corner, then select "Set up device" and choose "Set up a new device." The app will search for your Chromecast and show it in a list. Tap on it to begin pairing.

The app will ask you to confirm the code shown on your TV matches the one in the app — this is a security step to make sure you are connecting to your own device. Once confirmed, you will name your Chromecast (for example, "Living Room TV" or "Bedroom Chromecast"). Then you will select your Wi-Fi network and enter your Wi-Fi password. The device will connect and restart, which takes about a minute.

When setup is complete, you will see your Chromecast listed in the Google Home app. You can now cast content to it from any compatible app on your phone.

How to cast video, music, and photos to your TV

Open any app that supports Chromecast — YouTube, Netflix, Spotify, Google Photos, and Chrome browser are the most common. Look for the cast icon, which looks like a small rectangle with curved lines in the bottom right or top right corner of the screen. Tap it.

A menu will appear showing available Chromecast devices on your network. Select the one you want to cast to. The content will begin playing on your TV within a few seconds. Your phone screen will show what is playing on the TV and give you controls to pause, skip, or adjust volume.

Once casting starts, you can put your phone down, lock it, or even switch to a different app — the content will keep playing on your TV. If you want to stop casting, tap the cast icon again and select "Stop casting." The TV will return to whatever it was showing before.

Not every app has a cast icon. If you do not see one in an app you want to use, you can cast your entire phone or computer screen instead, though this uses more data and battery. On Android, swipe down from the top of the screen, tap "Cast," and select your device. On iPhone or iPad, swipe down from the top right, tap "Screen Mirroring," and select your Chromecast.

Casting from your computer or laptop

On a Windows or Mac computer, you can cast through the Chrome browser. Open Chrome, click the three dots menu in the top right, and select "Cast." A panel will open on the right side of the screen showing available Chromecast devices. Click the one you want to use.

You can cast a single tab (so only that website appears on your TV) or cast your entire screen (so everything on your computer shows on the TV). Choose "Cast tab" to send just one website, or "Cast entire screen" to mirror everything. Tab casting uses less bandwidth and is better for watching video. Screen casting is useful if you want to show photos, documents, or presentations.

To stop casting from your computer, click the cast icon in the Chrome menu and select "Stop casting."

Troubleshooting when casting does not work

The most common reason casting fails is that your phone and Chromecast are not on the same Wi-Fi network. Check that both devices are connected to the same network name. If you have a 5GHz and 2.4GHz network with the same name, try connecting your phone to the same band your Chromecast is using — you can see this in the Google Home app by tapping your Chromecast and checking the network details.

If the cast icon does not appear in an app, that app may not support Chromecast. Try a different app first to confirm your Chromecast is working. If casting works in some apps but not others, the problem is with that specific app, not your device.

If your Chromecast is not showing up in the Google Home app at all, restart both the Chromecast and your phone. Unplug the Chromecast for 30 seconds, plug it back in, and wait for it to fully restart. Then open the Google Home app and try again. If it still does not appear, forget the Wi-Fi network on your phone and reconnect to it, then try setting up the Chromecast again.

If casting starts but stops after a few seconds, your Wi-Fi signal may be weak. Move your phone closer to your router or Chromecast, or restart your router by unplugging it for 30 seconds.

What you can and cannot do with Chromecast

Chromecast works well for streaming video and music from apps, browsing websites on your TV, and displaying photos. It is designed for content that streams from the internet or from apps on your phone — it does not directly play files stored on your device unless the app supports it.

You cannot use Chromecast to play video games from your phone on your TV (unless the game app specifically supports casting). You also cannot use it to make video calls on your TV, though some apps like Google Meet do support casting.

Chromecast does not require a subscription or monthly fee. You pay once for the device, and casting is free as long as you have Wi-Fi. If you subscribe to streaming services like Netflix or Spotify, you can cast from those apps, but the subscription is separate from Chromecast itself.

Controlling your Chromecast from the Google Home app

The Google Home app is where you manage all your Chromecast settings. Open the app and tap your Chromecast device to see options like renaming it, adjusting volume, restarting the device, or removing it from your account.

You can also use the Google Home app to cast content directly without opening another app. In the Google Home app, tap the "Devices" tab, select your Chromecast, and look for a "Cast media" option. This lets you search for YouTube videos, music, or photos and send them to your TV without switching apps.

If you have multiple Chromecast devices in your home, you can name them differently (like "Living Room," "Kitchen," "Bedroom") so you know which one you are casting to. The Google Home app will show all of them in a list.

Frequently Asked Questions

Do I need a Google account to use Chromecast?

Yes. You need a Google account to set up Chromecast through the Google Home app. The account does not have to be the same one you use on your phone, but you will need one to complete setup.

Can I cast from an iPhone or iPad to Chromecast?

Yes. Most apps that support Chromecast work on both Android and iOS. You can cast from Netflix, YouTube, Spotify, and many other apps on an iPhone or iPad. Screen mirroring from an iPhone requires AirPlay, which Chromecast does not support directly, but many apps have a built-in cast button.

What happens if someone else connects to my Chromecast?

Anyone on your Wi-Fi network can cast to your Chromecast unless you change the settings in the Google Home app. You can restrict casting to only people you invite by opening the Google Home app, tapping your Chromecast, going to Settings, and changing the "Guest Mode" or casting permissions.

Can I use Chromecast without Wi-Fi?

No. Chromecast requires a Wi-Fi connection to work. It does not have Bluetooth or a direct wired connection option for casting. You need both your phone and Chromecast on the same Wi-Fi network.

Will casting drain my phone battery quickly?

Casting uses some battery, but once the content starts playing, you can lock your phone and it will use very little power. Casting a single app tab uses less battery than casting your entire screen. For long viewing sessions, you may want to plug your phone in, but it is not required.