Connect Your Chromecast in Three Steps

To connect your Chromecast to WiFi, you need the Google Home app on your phone, your WiFi network name and password, and your Chromecast plugged into a TV's HDMI port with power connected. The setup takes about five minutes. Open the Google Home app, tap the plus icon to add a device, select "Set up device," choose "New device," pick your home, and follow the prompts to select your WiFi network and enter your password. The app will confirm when your Chromecast is connected.

Your Chromecast must be within range of your WiFi router — typically 30 to 50 feet in an open room, less through walls. If setup fails, the most common cause is entering your WiFi password incorrectly. The second most common is that your phone is connected to a different WiFi network than the one you want your Chromecast to use; switch your phone to the correct network first, then start setup again.

Key Takeaways

  • You need the Google Home app installed on your phone, your WiFi password, and your Chromecast plugged into power and HDMI before you start.
  • The Google Home app walks you through selecting your WiFi network and entering your password in a step-by-step process that takes about five minutes.
  • Your phone must be connected to the same WiFi network you want your Chromecast to join, or the setup will fail.
  • If setup fails, check that you entered your WiFi password correctly and that your Chromecast is within range of your router.

What You Need Before You Start

Gather these items before you open the Google Home app. You need a smartphone or tablet running Android 6.0 or newer, or iOS 12.2 or newer. You need your WiFi network name (also called the SSID) and your WiFi password. You need your Chromecast plugged into an HDMI port on your TV and connected to power — the LED on the device should be blinking white or orange, not solid.

If your Chromecast LED is off, press the reset button on the back of the device for 15 seconds while it is plugged in. The LED will turn white, then orange, then start blinking. This means the device is ready to pair. If you do not have the Google Home app, read it from the Google Play Store (Android) or the Apple App Store (iOS) before you begin.

Step-by-Step Setup in the Google Home App

Open the Google Home app on your phone. Tap the plus icon in the top left corner. Select "Set up device." Choose "New device." Select the home where you want to add this Chromecast, or create a new home if this is your first device. The app will search for nearby devices.

When your Chromecast appears in the list, tap it. The app will ask you to confirm that you see a code on your TV screen — look at your television to verify the four-digit code matches what the app shows. Tap "Yes" to confirm. The app will then ask you to select your WiFi network from a list. Find your network name and tap it.

Enter your WiFi password exactly as it is — passwords are case-sensitive, so uppercase and lowercase letters matter. Tap "Connect." The app will show a progress screen while your Chromecast joins the network. This usually takes 30 to 60 seconds. When it finishes, you will see a confirmation screen. Tap "Next" to complete setup.

Troubleshooting Connection Problems

If the app cannot find your Chromecast, make sure it is plugged into power and the LED is blinking. Move your phone closer to the device. Restart your phone and try again. If the LED is not blinking, unplug the Chromecast, wait 10 seconds, and plug it back in.

If you enter your WiFi password and the connection fails, the most likely cause is a typo in the password. Go back and re-enter it carefully, paying attention to capital letters, numbers, and special characters. If you are not sure of your password, check your router's label or log into your router's settings from a computer to view or reset it.

If your Chromecast connects but then disconnects after a few minutes, your device may be too far from your router or blocked by walls or metal objects. Move your router closer to your Chromecast, or move the Chromecast closer to the router. If your WiFi network uses a 5 GHz band, try switching to the 2.4 GHz band instead — older Chromecast models work better on 2.4 GHz.

Connecting to a Different WiFi Network Later

If you move your Chromecast to a new location or change your WiFi network, you can reconnect it without resetting the device. Open the Google Home app, tap the device, tap the settings icon (gear), and select "WiFi." The app will show your current network and let you select a new one. Enter the password for the new network and tap "Connect."

If you forget your WiFi password or need to change networks but the app will not connect, you can reset your Chromecast and set it up again from the beginning. Press and hold the reset button on the back of the device for 15 seconds while it is plugged in. The LED will turn white, then orange, then start blinking. Follow the setup steps above to connect to your new network.

WiFi Networks That May Cause Problems

Some WiFi networks use features that can prevent Chromecast from connecting. If your network requires you to log in through a web page after connecting (called a captive portal), your Chromecast may not be able to complete setup. This is common in hotels, coffee shops, and offices. You may need to use a personal hotspot from your phone instead, or ask your network administrator to add your Chromecast's MAC address to the network's whitelist.

If your WiFi network name contains special characters or non-English letters, Chromecast may have trouble connecting. Try creating a guest network with a simpler name (letters and numbers only) and connecting your Chromecast to that instead. If your router broadcasts separate 2.4 GHz and 5 GHz networks with the same name, disable the 5 GHz network temporarily during setup, then re-enable it afterward.

Frequently Asked Questions

Do I need to be connected to WiFi on my phone to set up Chromecast?

Yes. Your phone must be connected to the same WiFi network that you want your Chromecast to join. If your phone is on a different network, the setup will fail. Check your phone's WiFi settings and make sure you are connected to the correct network before opening the Google Home app.

Can I set up Chromecast without the Google Home app?

No. The Google Home app is the only way to set up Chromecast and connect it to WiFi. You cannot use a web browser or any other method. read the app from the Google Play Store or Apple App Store before you start.

What if my Chromecast is already set up but I want to change the WiFi network?

Open the Google Home app, tap your Chromecast device, tap the settings icon, and select "WiFi." Choose your new network and enter the password. You do not need to reset the device or set it up again from scratch.

How far can my Chromecast be from my WiFi router?

Chromecast typically works within 30 to 50 feet of your router in an open space. Walls, metal objects, and other obstacles reduce the range. If your Chromecast keeps disconnecting, try moving it closer to your router or moving your router to a more central location in your home.

Why does my Chromecast keep disconnecting from WiFi?

The most common causes are distance from the router, interference from other devices, or a weak WiFi signal. Try moving your Chromecast or router closer together, switching to the 2.4 GHz band if your router supports both bands, or restarting your router by unplugging it for 30 seconds and plugging it back in.