How to Cast Your Chromebook Screen to a TV

Casting basics

Casting sends what is on your Chromebook to a TV using Google Cast over your home network. The Chromebook and the TV or streaming device talk to each other over Wi-Fi, and the TV handles showing the video or screen. This is a convenient way to watch movies, share a website, or present slides without a cable.

To cast, you need a TV that works with Google Cast, either built in or through a device such as Chromecast, and a Chromebook that is up to date. The Chromebook and the TV should be on the same Wi-Fi network. ChromeOS devices receive automatic updates, and Google provides 10 years of updates for ChromeOS devices, so the casting tools stay current on supported models.

You do not need a special Chromebook for casting. The feature is part of ChromeOS and works across the lineup. If you are also buying a new Chromebook, screen quality still matters for the times you use the laptop on its own; the display guide explains the basics.

Mirror your whole screen

Mirroring puts your entire Chromebook screen on the TV. Use this mode when you want others to see exactly what you see, such as a document, an app, or a slide deck that has no cast button of its own.

While you mirror, the Chromebook screen stays on and the TV reflects it. If you want the audience to see a presentation without your notes, an extended display is usually a better choice.

• Confirm that the Chromebook and the TV or Chromecast are on the same Wi-Fi network.
• At the bottom right, select the time to open Quick Settings.
• Select Cast, then choose the TV you want from the list.
• Your screen appears on the TV. To stop, open Quick Settings, select Cast, and choose Disconnect.

Cast a tab or a video

To show a single webpage or video, cast the tab instead of mirroring the whole screen. Open the page, select the Chrome menu, then choose Cast, Save and share, or Cast depending on the ChromeOS version. Pick the TV, and the selected tab appears on the TV while you can continue using other apps on the Chromebook.

Many video services put a cast button inside their player, usually a rectangle with a Wi-Fi symbol. When you use that button, the service streams the video directly to the TV, so playback does not stop if you switch to another app or close the tab. This is often the smoothest way to watch long videos.

Some services limit casting for certain titles or content types. If the cast icon is missing, check the provider's own app or help pages to see what casting options it supports.

Mirror, cast, or extend

ChromeOS gives you three ways to use a TV with your Chromebook. Which one you pick depends on what you are showing and whether you want to keep working on the Chromebook at the same time.

To switch between mirror and the other modes, start casting, then open Settings and look for the display arrangement options. If your ChromeOS version treats the TV as a second display, you can drag windows between the Chromebook and the TV. If it only mirrors, stick with casting a tab or video when you want to keep some privacy on the Chromebook.

Use the TV as a second screen

An extended display turns the TV into a second monitor. This is the mode to choose when you need to keep notes, email, or a chat window on the Chromebook while the TV shows slides or a full-screen video.

After you start casting, open Settings and look for the display options. Choose the arrangement that matches your physical setup, such as the TV above or beside the Chromebook. You can then move windows between the two displays in the same way you would with a wired monitor.

A second screen over Wi-Fi is convenient, but it is not identical to a wired monitor. If you need lower latency or a rock-solid connection, a cable is a better fit. The external monitors guide explains the differences, and the HDMI output article covers wired connections.

When a cable is better

Wireless casting depends on your home network. If the picture stutters, the TV drops out, or your Chromebook never finds the TV, a cable removes Wi-Fi from the equation.

A Chromebook with an HDMI port can connect directly to a TV with an HDMI cable. A Chromebook with only USB-C can use a USB-C to HDMI cable or adapter. The connectivity ports guide shows what your Chromebook's ports can do.

A wired connection carries the video signal directly from the Chromebook to the TV. That makes it the more reliable option for presentations, all-day video, or any situation where the network is slow.

Keep casting reliable

Most casting problems start with the network or device state. Confirm that the Chromebook and the TV are on the same Wi-Fi network, that the TV is on the correct input, and that the streaming device is powered on. A quick restart of both devices clears many temporary issues.

ChromeOS includes security features such as verification at boot, sandboxing, and data encryption. Keeping the Chromebook updated ensures those protections, and casting fixes, stay current. ChromeOS devices receive automatic updates, and Google provides 10 years of updates for ChromeOS devices.

For stubborn network issues, the Wi-Fi troubleshooting guide has more steps to try.

• If the TV does not appear in the Cast list, restart the Chromebook and the TV or streaming device.
• If playback is choppy, bring the Wi-Fi router closer or pause heavy downloads on other devices.
• If your Chromebook is older and no longer receives updates, casting to newer TVs may fail; the update article explains how to check update support.

Choosing a Chromebook if you cast often

Because casting is built into ChromeOS, no single Chromebook is meaningfully better at casting than another. Your choice should come down to how you use the laptop when it is not sending video to the TV.

If you watch most video on the TV, the Chromebook's own screen matters less, so portability and battery life move up your list. A 14-inch model balances screen size and travel weight, while a larger 15-inch or more model gives you a bigger display when you want to watch without casting.

If you like to keep the Chromebook beside you as a tablet while a movie plays on the TV, a 2-in-1 Chromebook is a comfortable choice. If you cast slides in meetings or classrooms, the business Chromebook guide is a better starting point.

For a newer high-performance tier, Chromebook Plus models include at least 8GB of RAM and 128GB of storage. That extra memory and local storage help with multitasking around your casting session.

If the Chromebook will often stay plugged in while you stream to the TV, energy efficiency is worth checking. Computers that earn the ENERGY STAR label use about 30-40% less energy than standard models, which adds up over long viewing sessions.

What to pick for your use

Questions

Can any Chromebook cast to a TV?

Yes. Casting is built into ChromeOS, so any Chromebook that is still receiving updates can send video, a tab, or the full screen to a TV that works with Google Cast. You do not need extra memory or a faster processor just to cast.

Do I need a Chromecast if my TV already has casting built in?

No. If the TV supports Google Cast, you can cast to it directly with no extra device. For a TV without Cast support, a streaming device such as Chromecast on an HDMI port adds the missing capability.

Why is my TV not showing up in the Cast list?

The usual cause is that the Chromebook and the TV or Chromecast are not on the same Wi-Fi network. Check the network name on both devices, wake the TV and select the correct input, then restart both if needed. Keep the Chromebook updated, because updates include casting fixes.

Can I cast a movie from a streaming service?

Many streaming services include a cast button inside their video player. When a title can be cast, that button sends the video directly to the TV. Some services limit casting for certain content, so check the player or the service's help pages if you do not see the icon.

Is casting secure?

ChromeOS includes security features such as verification at boot, sandboxing, and data encryption. When you cast, select the correct TV from the list and keep the Chromebook updated so it continues to receive security and feature updates.

Can I use a cable instead of casting?

Yes. A Chromebook with an HDMI port can connect to a TV with an HDMI cable, and a Chromebook with only USB-C can use a USB-C to HDMI cable or adapter. A wired connection does not depend on Wi-Fi and is often more reliable for presentations or long sessions.

Will an older Chromebook still be able to cast?

A Chromebook that is still receiving updates continues to get ChromeOS improvements, including casting fixes. ChromeOS devices receive 10 years of updates. You can check the update schedule for your model in Settings, About ChromeOS, Additional details.