How to Chromecast from Laptop: Easy Steps

What You’ll Need

A Chromecast device (Chromecast, Chromecast Ultra, Chromecast with Google TV, or a TV with Chromecast built-in) plugged into a TV and powered on.
A laptop with Wi-Fi enabled and connected to the same network as the Chromecast.
The Google Chrome browser (or Microsoft Edge) installed on your laptop. Most laptops have one of these already.
If you want to mirror your entire screen (not just a tab), you’ll also need the Google Home app on your laptop (available for Windows and Mac).

Step-by-Step

Check your Wi-Fi network. Make sure your laptop and the Chromecast are on the same Wi-Fi network. If they’re on different networks (like a guest network), casting won’t work.
Open your browser. Launch Google Chrome or Microsoft Edge on your laptop. These browsers support casting directly.
Open the content you want to cast. Navigate to the video, website, or presentation you want to show on the TV. For example, open a YouTube video or a Google Slides presentation.
Click the three-dot menu. In the top-right corner of Chrome or Edge, click the three vertical dots (or the puzzle piece icon in Edge) to open the menu.
Select ‘Cast…’. From the menu, choose ‘Cast…’ (in Chrome) or ‘Cast media to device’ (in Edge). A small dialog box will appear.
Choose your Chromecast device. Click the name of your Chromecast (e.g., ‘Living Room TV’). The content will start playing on your TV. If you want to stop casting, click the Cast icon again and select ‘Stop casting’.

Common Mistakes

Using the wrong Wi-Fi network. The most common issue is having the laptop on a different network than the Chromecast. Double-check both are on the same one.
Clicking ‘Cast’ but not selecting the right source. In the Cast dialog, you can choose to cast a ‘Tab’, ‘Desktop’, or ‘File’. If you just want to show a video from a website, ‘Tab’ is usually best. If you want to show your whole screen, choose ‘Desktop’.
Expecting all websites to cast perfectly. Some sites (like Netflix) have their own cast button that works better. If you use the browser’s Cast, the site may block it or show a black screen due to DRM.
Not having the Chromecast powered on. Make sure the Chromecast is plugged into a power outlet and the TV is on the correct HDMI input.

Tips

Use the site’s own cast button when available. On YouTube, Netflix, and many other streaming sites, there’s a cast icon (a rectangle with a Wi-Fi symbol) in the player. Clicking that is often more reliable than using the browser’s Cast.
Cast a specific tab for better performance. Casting a single tab uses less bandwidth and is smoother than casting your entire desktop.
Adjust the video quality. If casting is laggy, try lowering the video quality on the website (e.g., from 1080p to 720p) to reduce the load on your Wi-Fi.
Use the Google Home app for full-screen mirroring. If you need to mirror your entire desktop (e.g., for a presentation), open the Google Home app, click your device, and select ‘Cast my screen’. This works on Windows and Mac.
Keep your laptop awake. If your laptop goes to sleep, casting will stop. Adjust your power settings to prevent sleep while casting.

Troubleshooting

No devices found. If the Cast dialog shows ‘No devices found’, check that your Chromecast is on and that your laptop and Chromecast are on the same Wi-Fi. Restart both the Chromecast (unplug and plug back in) and your laptop’s Wi-Fi.
Video plays but no sound on TV. This usually means the audio is still coming from your laptop. Click the Cast icon, then the gear icon (or ‘Sources’ in Edge), and make sure ‘Tab audio’ is checked. Also, check the volume on your TV and laptop.
Black screen or video won’t play. Some streaming sites (like Netflix or Hulu) block casting from the browser due to copyright protection. Use the site’s own cast button instead. If that doesn’t work, try casting your entire desktop instead of a tab.
Lag or buffering. This is usually a Wi-Fi issue. Move your router closer to the Chromecast, reduce interference (e.g., from microwaves), or lower the video quality. Also, close other tabs that are using bandwidth.
Cast icon disappears. If the Cast icon is missing from the menu, make sure you’re using the latest version of Chrome or Edge. You can also try restarting the browser.

Frequently Asked Questions

Can I cast from any laptop?

Yes, as long as you have a Chromecast device and a laptop with a modern browser like Chrome or Edge. Windows, Mac, and Chromebooks all work.

Do I need to install any software?

For casting a browser tab, no. You just need Chrome or Edge. For full-screen mirroring, you’ll need the Google Home app, which is free.

Can I cast from Safari or Firefox?

No, Safari and Firefox do not support casting to Chromecast directly. Use Chrome or Edge, or use the site’s own cast button if available.

Why does Netflix say ‘This content is not available for casting’?

This happens when you try to cast a Netflix tab from the browser. Netflix has its own cast button in the player that works with Chromecast. Use that instead.

Can I cast while using my laptop for other things?

Yes, if you cast a tab, you can switch to other tabs or apps without interrupting the cast. If you cast your entire desktop, everything you do will be shown on the TV, so be careful.

How do I stop casting?

Click the Cast icon in your browser and select ‘Stop casting’. Or, on the Chromecast, press the back button on the remote (if you have one) or use the Google Home app.

Sources: Google Chromecast Help. Menus and buttons can differ slightly by version. Spotted something out of date? Tell us.