No, you cannot cast directly from Chromecast to Roku

Chromecast and Roku are separate casting systems that do not work together. A device built for Chromecast cannot send video or audio to a Roku TV or Roku streaming player. They use different technology and do not recognize each other on your network.

However, you have other options if you want to stream content to a Roku device. You can use Roku's own casting feature (called screen mirroring on some phones), or you can cast from apps that support Roku directly. The method depends on what device you are casting from and what app you are using.

Key Takeaways

  • Chromecast and Roku use different casting protocols and cannot communicate with each other.
  • Most phones and tablets can mirror their screen to Roku using Roku's built-in screen mirroring feature, which works similarly to Chromecast.
  • Many streaming apps (Netflix, YouTube, Spotify, Disney+) have a Roku button built in, so you can cast directly from the app without needing Chromecast.
  • If you own both a Chromecast device and a Roku device, you will need to choose which one to cast to for each streaming session.

How to cast to Roku from your phone or tablet

If you want to send video or audio from your phone to a Roku device, use Roku's screen mirroring feature instead of Chromecast. This mirrors your entire phone screen to the TV, similar to how Chromecast works.

On an Android phone, open the Settings app, go to Connected devices or Display, and look for Cast or Screen mirroring. Select your Roku device from the list. On an iPhone or iPad, swipe down from the top-right corner to open Control Center, tap Screen Mirroring, and select your Roku device. Your phone screen will appear on the TV within a few seconds.

Screen mirroring works for any app on your phone, but it uses more battery and network bandwidth than casting directly from an app. If the app you want to use has a Roku button built in, that method is usually faster and more reliable.

Which apps have built-in Roku casting

Many popular streaming apps let you cast directly to Roku without using screen mirroring. Look for a Roku icon or a cast button inside the app itself. When you tap it, the app will send the video or audio to your Roku device while your phone screen goes dark.

Apps with Roku casting built in include Netflix, YouTube, YouTube TV, Spotify, Apple Music, Disney+, Hulu, HBO Max, Amazon Prime Video, and Peacock. The exact button location varies by app, but it is usually near the playback controls or in the app's menu. If you do not see a Roku button, the app may not support Roku casting, and you will need to use screen mirroring instead.

Casting directly from an app is faster, uses less battery, and gives you better picture quality than screen mirroring. It also lets you use your phone for other tasks while the video plays on the TV.

What to do if you have both Chromecast and Roku

If you own both a Chromecast device and a Roku TV or player, they will not interfere with each other, but you will need to choose which one to use for each streaming session. They are separate systems on your network and do not share casting commands.

When you want to cast, check which device is turned on and which one the app supports. If you are using an app that works with both (like Netflix or YouTube), you will see a cast button that lets you pick your destination. Select Chromecast if you want to use that device, or select Roku if you want to use that device instead.

Why Chromecast and Roku do not work together

Chromecast uses Google's casting protocol, while Roku uses its own system. These are two different technologies that were developed separately and do not share code or standards. A Roku device cannot understand a Chromecast command, and a Chromecast device cannot understand a Roku command.

This is similar to how an iPhone charger does not work with an Android phone — they are physically and electronically incompatible. Both systems work well on their own, but they were not designed to communicate with each other. If you want to use both in your home, you will have different casting options for each device.

Troubleshooting casting problems with Roku

If screen mirroring to Roku is not working, first check that your phone and Roku device are on the same Wi-Fi network. They must be connected to the same router to find each other. Restart both devices — turn off your phone and Roku TV, wait 10 seconds, and turn them back on.

If an app's Roku button is not working, try closing the app completely and opening it again. Make sure your Roku device has the latest software by going to Settings > System > System update on the TV itself. If the problem continues, restart your router by unplugging it for 30 seconds, then plugging it back in. Wait two minutes for it to fully restart before trying again.

Some older Roku devices may not support screen mirroring or certain apps. Check your Roku model number (usually on a sticker on the back of the device) and visit Roku's website to see which features your model supports.

Frequently Asked Questions

Can I use a Chromecast dongle with a Roku TV?

Yes, you can plug a Chromecast dongle into an HDMI port on a Roku TV, and it will work as a separate input. However, you will need to switch your TV input to the HDMI port where the Chromecast is plugged in. The Roku TV's built-in Roku system and the Chromecast dongle are two different devices that do not interact with each other.

Will casting to Roku work without an internet connection?

No, both screen mirroring and app-based casting to Roku require a Wi-Fi connection. Your phone and Roku device must be on the same network to communicate. If your internet is down, casting will not work, though you can still watch content that is already downloaded on your phone.

Is screen mirroring to Roku the same as Chromecast?

Screen mirroring to Roku works similarly to Chromecast — both send content from your phone to your TV wirelessly — but they use different technology. Roku screen mirroring mirrors your entire phone screen, while Chromecast can send just the app to the TV. For most streaming apps, using the app's built-in Roku button is better than screen mirroring.

What if my Roku device does not show up when I try to cast?

Make sure your Roku device is turned on and connected to Wi-Fi. Check that your phone is on the same Wi-Fi network. Restart both devices and try again. If your Roku device still does not appear, check Roku's support website for your specific model to confirm it supports casting or screen mirroring.