The basic steps to cast from your laptop

To cast from a laptop to a Chromecast device, you need three things: a laptop on the same Wi-Fi network as your Chromecast, the Chrome browser, and a TV with Chromecast plugged in. Open Chrome, click the three-dot menu in the top right corner, select "Cast", choose your Chromecast device from the list, and then choose whether to cast your entire screen or just a single Chrome tab. Your laptop screen will appear on the TV within a few seconds.

The process works the same way on Windows, Mac, and Linux laptops. You do not need to install any extra software beyond Chrome itself. If your Chromecast does not appear in the Cast menu, make sure your laptop and Chromecast are connected to the same Wi-Fi network — they must be on the same network to communicate.

Key Takeaways

  • Open Chrome, click the menu, select Cast, and choose your Chromecast device to begin casting your screen or a single tab to your TV.
  • Your laptop and Chromecast must be on the same Wi-Fi network for casting to work.
  • You can cast your entire screen or just the Chrome browser tab you are viewing, depending on what you select in the Cast menu.
  • Casting uses your laptop's Wi-Fi connection, so moving far from your router or losing signal will interrupt the connection.

Casting your entire screen versus a single tab

The Cast menu gives you two options: "Cast screen" and "Cast tab". Casting your entire screen sends everything on your laptop display to the TV, including your desktop, notifications, and any open windows. This is useful when you want to show multiple programs or switch between applications without interrupting the cast.

Casting a tab sends only the content of one Chrome browser tab to the TV. The rest of your laptop screen stays private. This is better when you want to show a video, presentation, or website while keeping other windows hidden. You can switch between tabs on your laptop without affecting what appears on the TV — only the tab you selected will display.

What to do if your Chromecast does not appear in the Cast menu

If you open the Cast menu and your Chromecast device is not listed, the most common reason is that your laptop and Chromecast are not on the same Wi-Fi network. Check your laptop's Wi-Fi settings and make sure you are connected to the same network name (SSID) as your Chromecast. You can usually find the network your Chromecast is on by looking at the Chromecast settings on your TV or in the Google Home app on a phone.

If both devices are on the same network and the Chromecast still does not appear, restart your Chromecast by unplugging it for 10 seconds and plugging it back in. Then wait 30 seconds for it to fully boot up. If the problem continues, restart your laptop and try again. Sometimes the Cast menu takes a moment to discover devices on the network, so waiting a few seconds before looking for your device can help.

Controlling playback and adjusting volume while casting

Once you are casting, a small Cast window appears in Chrome showing your connected device. You can pause, play, or stop the cast from this window. If you are casting a video, you can use the video player controls on your TV or on your laptop — both will work. Volume on the TV is controlled by your TV remote or TV settings, not by your laptop.

If you are casting a tab with audio, the sound comes from your TV speakers, not your laptop speakers. Your laptop microphone and speakers are not used during casting. To stop casting, click the Cast window and select "Stop casting", or close the Chrome tab you were casting.

Why your cast connection might drop or lag

Casting depends on your Wi-Fi connection. If your laptop moves too far from your router, loses signal, or if another device on the network is using a lot of bandwidth, the cast may stutter, pause, or disconnect. Moving closer to your router usually fixes this. If many devices are on your Wi-Fi network, try disconnecting devices you are not using.

Casting also uses your laptop's processor to encode the video being sent to your TV. If your laptop is running many programs at once, the cast may become choppy. Closing unnecessary programs before casting can improve performance. Older laptops may experience more lag than newer ones, especially when casting your entire screen rather than a single tab.

Casting from different browsers and devices

Chromecast casting from a laptop works only in the Chrome browser. Firefox, Safari, Edge, and other browsers do not have the Cast feature built in. If you need to cast from a different browser, you will need to use a different method, such as connecting your laptop to your TV with an HDMI cable or using a different casting device that supports your browser.

If you have a Chromebook (a laptop that runs Chrome OS), casting works the same way. Android phones and tablets can also cast to Chromecast using the Google Home app or the Cast button in compatible apps. iPhones and iPads cannot cast to Chromecast directly, though some apps like YouTube and Netflix have their own casting buttons that work with Chromecast.

Casting presentations and documents from your laptop

Casting is useful for presentations because you can see your speaker notes on your laptop while your audience sees only the slides on the TV. Open your presentation in Chrome (Google Slides, PowerPoint Online, or a PDF in Chrome), then cast the tab. Your laptop screen remains your private view, and the TV shows only what you selected to cast.

If you are using a presentation program that is not in Chrome, such as Microsoft PowerPoint installed on your computer, you will need to cast your entire screen instead of a tab. This means your audience will see your desktop and any notifications that pop up. To avoid this, open your presentation in a Chrome-compatible version like PowerPoint Online or Google Slides before casting.

Frequently Asked Questions

Do I need to pay anything to use Chromecast casting from my laptop?

No. Casting from Chrome to Chromecast is free. You need a Chromecast device (which you purchase once) and a Chrome browser (which is free), but the casting feature itself has no subscription or ongoing cost.

Can I cast from my laptop while using a VPN?

Casting may not work if your laptop is on a VPN and your Chromecast is not, because they may not be able to see each other on the network. To fix this, either turn off the VPN on your laptop while casting, or connect your Chromecast to the same VPN network as your laptop if your VPN supports that.

What happens to my laptop when I start casting?

Your laptop continues to work normally. You can use other programs, browse the web, or do other tasks while casting. The cast will continue even if you minimize Chrome or switch to a different program, though closing the Chrome window will stop the cast.

Can I cast audio only without showing my screen?

Chromecast from a laptop always sends video to your TV. If you want to play audio only, you would need to use a different device like a Google Home speaker or a phone casting to a Chromecast Audio device (though Chromecast Audio is no longer sold new).

Why does casting stop when my laptop goes to sleep?

When your laptop enters sleep mode, it stops communicating with your Chromecast, which ends the cast. To prevent this, change your laptop's power settings to keep the screen on while casting, or disable sleep mode temporarily while you are presenting.