The simplest way depends on what ports your devices have
Most laptops connect to a TV through an HDMI cable, which carries both picture and sound in one connection. If your laptop has an HDMI port (a flat, rectangular slot about the size of a USB stick), you can plug one end into the laptop and the other into any HDMI port on your TV. Turn on the TV, switch it to the correct HDMI input, and your laptop screen should appear on the television within seconds.
If your laptop doesn't have HDMI, you have other options depending on what ports it does have. USB-C ports (small oval-shaped connectors) can carry video on many newer laptops. Older laptops might have DisplayPort, Mini DisplayPort, or VGA ports. The TV itself might also have USB-C or DisplayPort if it's recent. Matching the ports on both devices is the first step to knowing which cable or adapter you need.
Key Takeaways
- HDMI is the most common connection and works with nearly every TV made in the last 15 years — just plug in the cable and switch the TV to the right HDMI input.
- If your laptop lacks HDMI, check what ports it has (USB-C, DisplayPort, or VGA) and buy an adapter that converts that port to HDMI.
- Wireless connections like Miracast, AirPlay, or Chromecast work without cables but require both devices to support the same standard and be on the same network.
- Once connected, you can extend your display (use the TV as a second screen) or mirror it (show the same thing on both), depending on what you need.
Using HDMI: the standard wired connection
HDMI is built into almost every TV sold since 2008 and most laptops made since 2010. An HDMI cable costs $5 to $15 and carries video and audio together, so you don't need separate cables. Plug the cable into the HDMI port on your laptop, plug the other end into any HDMI port on your TV, and turn on the TV.
Your TV has multiple HDMI ports — usually labeled HDMI 1, HDMI 2, and so on. Use the TV remote to switch to whichever port you plugged the cable into. You'll see your laptop screen appear on the TV. If nothing shows up, try a different HDMI port on the TV, or restart your laptop. On Windows, you can also press Windows key + P to open the display menu and select how you want to use the TV.
HDMI works reliably and instantly, with no setup or pairing required. The downside is that you're tethered to a cable, which limits where you can sit or stand while using the laptop.
Adapters for laptops without HDMI
If your laptop has USB-C but no HDMI, you need a USB-C to HDMI adapter. These cost $15 to $40 and are widely available. Plug the USB-C end into your laptop and the HDMI end into the TV. Some USB-C adapters also charge your laptop at the same time, which is useful if you're running low on battery.
For older laptops with DisplayPort or Mini DisplayPort, buy a DisplayPort to HDMI adapter instead. VGA is an older video standard found on some laptops and older TVs — if both your laptop and TV have VGA ports, a VGA cable works, but it carries video only, so you'll need a separate audio cable or speakers.
Before buying an adapter, look at the actual port on your laptop. USB-C is small and oval. DisplayPort is rectangular with a notch on one corner. Mini DisplayPort looks like a tiny DisplayPort. VGA is a trapezoid with three rows of small holes. Match the shape to the right adapter.
Wireless connections without cables
If you want to avoid cables, you can use a wireless connection, but both your laptop and TV must support the same standard. Windows laptops support Miracast, which is built into Windows 10 and later. On your laptop, press Windows key + P and select "Connect to a wireless display." Your TV must have Miracast built in or connected to a Miracast adapter (a small device that plugs into the TV's HDMI port).
Apple laptops use AirPlay, which works with Apple TVs and some newer smart TVs that support AirPlay 2. Click the Control Center in the top right, select "Screen Mirroring," and choose your TV from the list.
If your TV has a Chromecast device plugged in, you can cast from a Windows or Mac laptop using Google Chrome. Open Chrome, click the three dots in the top right, select "Cast," and choose your TV. This works for streaming video and audio but not for mirroring your entire screen.
Wireless connections are convenient but slower than HDMI and can drop if your Wi-Fi signal is weak. They also add a second or two of delay, which matters if you're playing games or watching video.
Choosing between mirroring and extending your display
Once your laptop is connected to the TV, you can use it in two ways. Mirroring shows the exact same image on both screens — useful for presentations or watching video with others. Extending treats the TV as a second monitor, so you can drag windows between the laptop screen and the TV, or keep different apps open on each one.
On Windows, press Windows key + P to open the display menu. You'll see options for "Duplicate" (mirroring), "Extend," "Second screen only," or "PC screen only." Choose what fits your task. On Mac, go to System Settings, then Displays, and click the dropdown next to "Arrangement" to choose mirroring or extending.
Extending is powerful if you use your laptop for work — you can keep email or chat on the laptop screen while displaying a presentation or document on the TV. Mirroring is simpler for casual use and makes sure everyone in the room sees the same thing.
Troubleshooting when the TV doesn't show your screen
If you've plugged in the cable or connected wirelessly but nothing appears on the TV, start with the basics. Make sure the TV is on and set to the correct input. Use the TV remote to cycle through HDMI inputs until you see your laptop screen, or check the TV's input menu. If you're using wireless, make sure both devices are on the same Wi-Fi network.
On Windows, right-click the desktop and select "Display settings." Scroll down and click "Advanced display settings." Check that your TV is listed under "Multiple displays." If it's not, click "Detect" to force Windows to find it. Restart your laptop if detection fails.
On Mac, go to System Settings, then Displays. If your TV doesn't appear, unplug the cable or disconnect from the wireless network, wait 10 seconds, and reconnect. Restart your Mac if the TV still doesn't show up.
If you're using an adapter, try a different USB-C or DisplayPort cable — the cable itself might be faulty. Test the adapter with a different laptop if you have one available, to rule out a problem with your laptop's port.
Audio from the TV instead of your laptop speakers
When you connect via HDMI, audio usually flows to the TV automatically. If you hear sound from your laptop speakers instead, go to Windows Settings, then System, then Sound. Scroll down to "Advanced" and look for "Volume mixer." Find your TV in the list of output devices and click it to set it as the default. On Mac, go to System Settings, then Sound, and select your TV from the "Output device" list.
If your TV has no speakers or you prefer to use external speakers, you can connect speakers to your laptop's headphone jack or USB port, or buy a small Bluetooth speaker and pair it with your laptop. This bypasses the TV's audio entirely.
Frequently Asked Questions
Do I need a special HDMI cable for 4K video?
Standard HDMI cables work for 4K, but older cables might not support the highest refresh rates. If you're connecting a newer laptop and TV both capable of 4K, an HDMI 2.1 cable ensures you get the best quality. For everyday use, a basic HDMI cable is fine.
Can I use my TV as a monitor all the time?
Yes, but TVs are not ideal for this. They're farther away than a monitor, so text can be hard to read, and they use more power. If you do use a TV as a monitor, increase the text size in your operating system settings to reduce eye strain.
Why is my wireless connection so slow?
Wireless display standards like Miracast and AirPlay compress video to send it over Wi-Fi, which adds delay and can cause stuttering. HDMI is faster because it's a direct connection. If lag bothers you, switch back to a cable.
What if my laptop and TV are in different rooms?
HDMI cables can run up to 50 feet with a good cable, but longer runs may lose signal. For distances over 50 feet, use an HDMI extender (a device that boosts the signal) or switch to wireless if both devices support it. Wireless works through walls but depends on Wi-Fi strength.
Can I charge my laptop while it's connected to the TV?
With HDMI alone, no — the cable carries video and audio but not power. If your laptop has USB-C, use a USB-C to HDMI adapter that also supports power delivery, and plug it into a power adapter. This lets you charge while the video runs through the same port.