Using Chromecast as a Second Monitor: The Reality & Alternatives

a laptop is projecting onto the sony tv, with two chromecasts besides

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What To Know

  • Chromecast allows for screen duplication but not screen extension.
  • To cast from Google Chrome to Chromecast: Ensure both devices are on the same Wi-Fi > Click the kebab menu in Chrome > Choose Cast > Select your Chromecast > From Source, choose Cast tab or Cast screen.
  • For a true screen extension experience without Chromecast, use Miracast for Windows or Screen Mirroring for Mac, following the steps for each OS.

Are you seeking a second-screen experience?

Dive into this guide to uncover the realities of using Chromecast as a dual screen and practical use cases to amplify your workflow.

Navigate the simple steps to cast from Chrome, and if you’re after a true screen extension, discover alternatives beyond Chromecast.

Dive in, and let’s demystify your tech queries!

But first, is it possible to use Chromecast as a secondary monitor?

Well, it’s a bit of both. While Chromecast allows you to duplicate your screen, it doesn’t offer a true extension. Nevertheless, for certain tasks, it can serve effectively as a second display.

Therefore, I’ll explore some practical applications before walking you through setting up Chromecast as a second monitor, as well as alternatives for the genuine screen extension.

Some Use Cases To Make Chromecast Act as a Second Monitor

Now that you know Chromecast can somewhat act as a second monitor. Want to boost your productivity and make the most of it? 

With Chromecast, you can cast your favorite videos, tutorials, or movies onto your TV while working on something else on your computer. 

For example, you can cast a YouTube tutorial video onto the Chromecast in one tab while working on another. 

Or, you can cast your favorite movie from Netflix onto your Chromecast in one tab while browsing newsfeeds or chatting with friends on another tab. 

Want to work on a document while keeping an eye on your work? No problem! Simply cast one tab with the document and the work on another. The possibilities are endless! 

The best part? You don’t need to manipulate the app or tab you’re casting, just view it on your TV while working on something else. 

How To Cast a Google Chrome Tab or the Entire Screen to Chromecast?

Looking to cast your Google Chrome tab or entire screen to Chromecast? It’s easier than you think! All you need to do is to follow our guidelines:

Step 1: First, make sure that both your Chromecast and computer are connected to the same Wi-Fi network.

Step 2: Then, simply click the kebab menu on Google Chrome and choose Cast.

kebab menu of google chrome with an arrow pointing at the cast... option

Step 3: Select your Chromecast, and then choose whether you want to Cast tab or Cast screen from the Sources menu. 

cast tab menu of Google Chrome, sources menu including cast tab and cast screen which are highlighted

Step 4: If you’ve already connected your laptop to another display, you’ll be prompted to choose which screen to cast.

screen selection when casting on google chrome on a laptop

Step 5: Once you’ve made your selection, click Share and start enjoying your content on the big screen! 

With Chromecast, you can make use of the cast feature in Google Chrome to easily mirror your laptop/PC onto your TV, making it a great assistant as a second monitor for displaying a tab or the whole screen. 

How To Cast From YouTube to Chromecast

Looking to use Chromecast as a second monitor to enjoy your favorite YouTube videos on the big screen while working on something else? 

The process is simple! Follow our step-by-step instructions below, and you’ll be casting your YouTube videos in no time:

Step 1: First, ensure that both your Chromecast and computer/smartphone are connected to the same Wi-Fi network

Step 2: Once you’ve confirmed that, open the YouTube video you want to cast and click the Cast icon on the video bar.

an arrow pointing at the cast icon on a youtube video

Step 3: From there, select your Chromecast from the list of available devices and start watching your content on the big screen. 

With just a few simple steps, you can now easily cast your favorite tutorial videos onto Chromecast while taking notes on your computer, making it an ideal choice for enhancing your learning experience.

Alternative Method: Extend or Duplicate Your Screen (Without Chromecast)

Feeling limited by Chromecast’s screen duplication feature and ready to take your screen extension game to the next level? 

Don’t worry, we’ve got you covered with an alternative method that will help you extend your screen, and literally make your TV a second monitor without any restrictions.

First, have both your TV and computer connected to the same Wi-Fi network and follow these simple steps to check if your TV is compatible with Miracast (Windows OS) or Screen Mirroring (Mac OS). 

You’ll know whether your TV is compatible or not if your laptop/PC can find it.

Miracast in Windows OS (10 and 11)

extend screen on a windowOS laptop onto a TV

Step 1: For Windows OS (10 and 11), press Window + K to open the device list. 

Step 2: Then, choose the smart TV you want to cast onto and press Window + P to select Extend. Now, you can take it to a whole new level, not just duplicate or mirror your laptop’s/PC’s screen.

Screen Mirroring in Mac OS

extend screen on a macbook to a TV

Step 1: For Mac OS, navigate to Control Center on the menu bar, select the Screen Mirroring icon, and then choose your TV.

how to screen mirror on a macbook, screen mirror and control center are highlighted and pointed by an arrow

Step 2: Enter the PIN code that appears on the TV (if any), and then choose either Mirror Built-in Display (duplicate) or Use As Separate Display (extend). 

methods to screen mirror on a macbook

With this alternative method, you can still enjoy the benefits of extending or duplicating your screen without Chromecast.


In conclusion, Chromecast can be a useful tool for using your TV as a second monitor to support your productivity and display your content on a larger screen. 

While it can technically only duplicate your screen, Chromecast is still a great option for displaying an app or website for all to see. 

By following the simple steps outlined above, you can easily cast your compatible apps and screen onto your TV using Chromecast and use it as a second monitor. 

This makes Chromecast an ideal choice for anyone looking to enhance their productivity and entertainment experience. 

If you want to extend your screen without any limitations, we also provide you with alternative methods that can help you achieve that goal. 

We want to hear from you! Did you know how to use Chromecast as a second monitor? 

Share your thoughts in the comments section below!

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