Are you looking for a way to increase productivity without spending extra money on an additional screen? Using a laptop as a second monitor can be a game-changer for multitasking, gaming, and improving workflow efficiency. In this guide, we’ll walk you through different methods to turn your laptop into a second screen for free.
Why Use a Laptop as a Second Monitor?
Using a dual monitor setup can significantly improve productivity by allowing you to:
- Work on multiple applications simultaneously
- Edit videos and photos more efficiently
- Extend your gaming experience
- Stream and monitor content without switching tabs
If you don’t want to invest in an extra display, repurposing an old laptop as a second screen is a cost-effective solution.
How to Use a Laptop as a Second Monitor on Windows
Windows 10 and Windows 11 come with a built-in feature that allows you to extend your primary screen wirelessly. Follow these steps to set it up:
1. Enable “Projecting to This PC” on the Laptop
- Open Settings on the laptop you want to use as a second monitor.
- Go to System > Projecting to this PC.
- Under Some Windows and Android devices can project to this PC, select Available everywhere or Available everywhere on secure networks.
- Set up Ask to project to this PC to Only the first time for convenience.
- Ensure both devices are connected to the same Wi-Fi network.
2. Connect the Primary PC to the Laptop Display
- On your primary Windows PC, press Windows + P to open the projection menu.
- Click Connect to a wireless display and select your laptop from the list.
- Choose Extend to use it as a second screen.
This method is simple and requires no extra software, but it works best with a stable Wi-Fi connection.
How to Use a MacBook as a Second Monitor with Sidecar
If you own an iPad or another Mac, Apple’s Sidecar feature allows you to use it as a second display. Here’s how:
- Make sure both devices are signed into the same Apple ID and connected via Wi-Fi or USB.
- On your Mac, go to System Preferences > Displays > Add Display.
- Select your iPad or Mac from the list.
- Choose Extend Display to use it as a second monitor.
Sidecar is available on macOS Catalina and later versions and provides seamless integration with Mac and iPad devices.
Using Third-Party Software to Extend Your Display
If you’re using different operating systems or want additional flexibility, third-party software solutions can help. Some popular options include:
Spacedesk (Windows & Android/iOS)
- Allows you to use a tablet or another PC as a second monitor
- Works over Wi-Fi or USB
- Supports touch functionality
Deskreen (Cross-Platform)
- Converts any device with a web browser into a second screen
- Requires a stable internet connection
- Free and open-source
Barrier (Linux, Windows, macOS)
- Works well for using multiple computers with one keyboard and mouse
- Ideal for Linux and cross-platform setups
These tools offer wireless and wired connections, depending on your preference.
Troubleshooting Common Issues
If you experience connection issues, try the following fixes:
- Ensure both devices are on the same Wi-Fi network.
- Restart your router if you notice lag or disconnection.
- Update graphics drivers to prevent display errors.
- If using third-party software, check firewall settings to allow communication.
Final Thoughts
Using a laptop as a second monitor is a great way to enhance productivity without additional costs. Whether you use Windows’ built-in Wireless Display, Apple’s Sidecar, or third-party tools like Spacedesk and Deskreen, the right method depends on your operating system and needs.
