How to Set Up and Cast to Your Google Chromecast Device

What Chromecast Does and How to Start Casting

Google Chromecast turns your TV into a screen for content from your phone, tablet, or computer. You plug the Chromecast device into an HDMI port on your TV, connect it to your home Wi-Fi network, and then send video, music, or photos from any compatible app directly to your television. The device itself does not have a remote — you control what plays using your phone or computer instead.

Casting works by sending a signal from your device to the Chromecast over your Wi-Fi network. The Chromecast then pulls the content from the internet or from your device and displays it on your TV. This is different from mirroring your entire screen — most casting apps send only the video or audio you selected, leaving your phone free to use for other things while the content plays on the TV.

Key Takeaways

Plug your Chromecast into an HDMI port on your TV, switch the TV to that input, and connect the device to your home Wi-Fi using the Google Home app on your phone.
Once set up, you cast content by opening a compatible app (like YouTube, Netflix, or Spotify), tapping the cast icon, and selecting your Chromecast device from the list.
Your phone and Chromecast must be on the same Wi-Fi network for casting to work, and the connection will drop if you move too far away or switch networks.
If casting fails, restart your Chromecast by unplugging it for 10 seconds, then check that both devices are on the same Wi-Fi network and that your app is up to date.
Chromecast works with hundreds of apps including YouTube, Netflix, Spotify, Disney+, Hulu, and Google Photos, but not all apps support casting.

Setting Up Your Chromecast for the First Time

Before you begin, make sure you have a TV with an available HDMI port, a home Wi-Fi network with the password nearby, and a smartphone or tablet with the Google Home app installed. Plug your Chromecast into an HDMI port on the back or side of your TV, then plug the power cable into a wall outlet or USB port on the TV itself.

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 with a code and instructions. Open the Google Home app on your phone, tap the plus icon in the top left corner, and select "Set up device." Choose "Set up a new device" and follow the prompts. When the app asks you to confirm the code on your TV, make sure the numbers match, then select your home Wi-Fi network and enter your password.

The Chromecast will connect to Wi-Fi and read any needed updates — this can take a few minutes. Once the setup screen disappears and you see the Chromecast home screen on your TV (usually showing a clock, weather, or rotating photos), your device is ready to use. You can name your Chromecast something memorable like "Living Room TV" so you can identify it when you have multiple devices.

How to Cast Video, Music, and Photos to Your TV

Casting begins in the app where your content lives. Open YouTube, Netflix, Spotify, or another app that supports casting, find the video or song you want to watch or listen to, and look for the cast icon — it looks like a rectangle with curved lines in the bottom left corner. Tap that icon and a list of available devices will appear. Select your Chromecast by name and the content will start playing on your TV within a few seconds.

While content is casting, your phone screen will show a card at the bottom displaying what is playing, volume controls, and a pause button. You can lock your phone, switch to another app, or even leave the room — the content will keep playing on your TV. To stop casting, tap the cast icon again and select "Stop casting," or just press pause on the card that appears on your phone.

Not every app has a cast button. YouTube, Netflix, Disney+, Hulu, Spotify, Apple Music, Google Photos, and Plex all support casting. Some apps like Instagram or TikTok do not have built-in cast buttons, though you can mirror your entire phone screen to Chromecast if you need to (this uses more battery and is slower than casting). Check the app's menu or help section if you are not sure whether it supports casting.

Troubleshooting Connection and Casting Problems

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 — your phone's Wi-Fi settings should show the same network your Chromecast is using. If you recently changed your Wi-Fi password, your Chromecast may still be trying to use the old one. Open the Google Home app, find your Chromecast, tap the settings icon, and select "Wi-Fi" to reconnect with the new password.

If the cast button does not appear in an app you know supports casting, try closing and reopening the app, or restart your phone. Make sure your app is up to date by checking your phone's app store. If you are still having trouble, unplug your Chromecast from power for 10 seconds, plug it back in, and wait for it to restart — this solves most casting problems. The restart takes about one minute.

If your Chromecast keeps disconnecting from Wi-Fi, move it closer to your router or check whether other devices are using a lot of bandwidth. Chromecast works best when your router is in the same room or one room away. If you have a dual-band router (2.4 GHz and 5 GHz), try connecting your Chromecast to the 2.4 GHz network, which has better range, even though it is slower. You can set this in the Google Home app under your Chromecast's Wi-Fi settings.

Using Chromecast with Multiple Devices and Rooms

If you have more than one Chromecast, the Google Home app will show all of them in a list when you tap the cast icon. Give each device a descriptive name — "Bedroom," "Kitchen," "Living Room" — so you can quickly find the right one. You can cast to different Chromecast devices at the same time. For example, you could play music in the kitchen while someone else watches a movie in the living room.

You can also cast from different phones and tablets to the same Chromecast. Anyone on your home Wi-Fi network can send content to your TV without needing a password, though you can restrict this in the Google Home app if you want only certain people to be able to cast. Open the Chromecast settings, tap "Recognition and personalization," and choose who can cast to the device.

Screen Mirroring vs. Casting: When to Use Each

Casting and screen mirroring are different. Casting sends only the video or music from an app to your TV — your phone stays responsive and you can use it for other things. Screen mirroring duplicates your entire phone screen on the TV, including notifications, messages, and anything else you do on your phone. Mirroring uses more battery and is slower, but it works with any app, even ones that do not have a cast button.

To mirror your screen, open your phone's quick settings (swipe down from the top twice on most Android phones), look for "Cast," "Screen cast," or "Wireless display," and select your Chromecast. Your entire screen will appear on the TV. To stop mirroring, tap the cast notification and select "Stop." Use casting whenever the app supports it — it is faster and saves your phone's battery. Use mirroring only when you need to show something that does not have a cast button, like a web browser or a photo editing app.

What Apps Work with Chromecast

Hundreds of apps support casting. The most common are YouTube, Netflix, Disney+, Hulu, Amazon Prime Video, Apple TV, Spotify, Apple Music, YouTube Music, Google Play Music, Plex, Pandora, and Google Photos. Many news apps, fitness apps, and smart home apps also support casting. If you are not sure whether an app supports casting, open it and look for the cast icon in the menu or player controls.

Some apps require a paid subscription to cast — for example, you can cast from Spotify Free, but some features may be limited. Others are free. Check the app's help section or support page if you have questions about whether casting is included with your account type. If an app you use does not have a cast button, you can always use screen mirroring as a backup, though the experience will not be as smooth.

Frequently Asked Questions

Do I need a Google account to use Chromecast?

You need a Google account to set up Chromecast using the Google Home app, but once it is set up, anyone on your Wi-Fi network can cast to it without signing in. The account is only used during the initial setup process.

Can I cast if I am not at home?

No. Casting requires your phone and Chromecast to be on the same Wi-Fi network. If you are away from home, you cannot cast to a Chromecast on your home network. However, you can use the Google Home app to control some smart home devices remotely if they are set up for remote access.

Why does casting stop when I lock my phone?

Casting should continue even when your phone is locked. If it stops, check that your phone is still connected to the same Wi-Fi network. If you switched networks or moved out of range, the connection will drop. Unlock your phone, reconnect to the correct Wi-Fi, and try casting again.

Can I cast from a computer or tablet?

Yes. Tablets with the Google Home app can cast just like phones. Computers can cast through the Chrome browser — open Chrome, click the three-dot menu, select "Cast," and choose your Chromecast. Some apps on computers also have built-in cast buttons.

What should I do if my Chromecast is not showing up in the cast list?

Make sure your Chromecast is powered on and connected to the same Wi-Fi network as your phone. Restart your phone and the Chromecast by unplugging it for 10 seconds. If it still does not appear, open the Google Home app and check that the device is listed there — if it is not, you may need to set it up again.

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.