How to Check Your Webcam Resolution

Webcams are sold as VGA, HD, Full HD or by megapixel count. That label does not always match the picture you get in a call or recording. This guide shows how to find the resolution your camera actually delivers, and how to tell whether you are getting 720p or something lower.

What the common resolution labels mean

• VGA: 640 × 480 pixels, about 0.3 megapixels.
• 720p (often sold as HD): 1280 × 720 pixels, about 0.9 megapixels.
• 1080p (often sold as Full HD): 1920 × 1080 pixels, about 2.1 megapixels. A 2MP webcam is usually a 1080p camera.
• 5MP: about 5 million pixels. This figure often describes still photos. Check the video modes separately, because they may top out at a lower resolution.

Resolution is only the pixel count. Frame rate, lens quality and lighting also affect how sharp the image looks, so two 720p cameras can look quite different.

Before you start

• Close other apps that may be using the camera, such as video call clients, recording software or virtual camera tools. Many cameras can only be used by one app at a time.
• If you have more than one camera, know which one you want to check. Laptops may have a built-in webcam and an external USB camera, and some systems also list virtual cameras.
• Make sure camera permission is turned on for the app or browser you will use. On Windows this is in the privacy settings for the camera; on macOS it is in Privacy & Security.
• Decide whether you want a local check or a browser-based one. Built-in camera apps and command-line tools run on your computer. A browser webcam test also runs in the browser, but read the site's privacy information to confirm whether any images leave your device.

Step-by-step instructions

Windows 11 and Windows 10: Camera app

• Open the Camera app from the Start menu.
• If you have several cameras, use the switch-camera button to pick the one you want.
• Open the app's settings (the gear icon).
• Look for the video quality option. The dropdown lists the resolutions and frame rates the app can use with that camera, such as 720p at 30 fps or 1080p at 30 fps.
• The highest entry is the top video resolution the app offers for that camera. Photo quality is a separate setting and may show a higher megapixel figure.

Labels and layout differ between Camera app versions, so the option may be worded slightly differently. Changing the setting only affects the Camera app, and you can switch it back at any time.

Any system: browser webcam test

• Open a webcam test page in your browser.
• Allow camera access when the browser asks.
• If the page lets you choose a device, make sure the selected camera is the one you want to check.
• Read the reported width and height. A 720p stream shows 1280 × 720 and a 1080p stream shows 1920 × 1080.

A browser shows the resolution it negotiated with the camera, which may be lower than the camera's maximum. If the test offers a higher-resolution option, try it to see whether the camera accepts it.

macOS

System Settings does not list webcam resolutions. Use a browser webcam test as described above. Or record a short clip, for example with a New Movie Recording in QuickTime Player, save it, and check the clip's dimensions as described in the next section.

Linux

If the v4l-utils package is installed, run v4l2-ctl --list-devices to find your camera's device. Then run v4l2-ctl --list-formats-ext with that device. The output lists each pixel format with the resolutions and frame rates it supports.

Check the output

The most reliable check is a real recording. Record a few seconds of video at the setting you chose, then look at the file's dimensions. On Windows, right-click the file, open Properties and look at the frame width and height on the Details tab. On macOS, open the file in QuickTime Player and open the movie inspector, or use Get Info in Finder.

• 1280 × 720 confirms a 720p recording.
• 1920 × 1080 confirms 1080p.
• 640 × 480 means the recording is VGA, even if the camera supports more.
• Also check the frame rate in the same properties. Higher resolutions sometimes come with a lower frame rate on the same camera.

A clip with the correct pixel dimensions can still look soft. That is caused by the lens, compression, focus or lighting, not by the resolution setting. Good front lighting usually improves perceived detail more than any setting change.

Common problems and next steps

The test shows a lower resolution than the box says

Look at the full list of supported modes, not just the default. Some cameras only reach their advertised resolution in a compressed format or at a lower frame rate. Some products also advertise a photo or interpolated figure that is higher than the real video resolution. An external camera on a crowded USB hub or a slower USB port may also fall back to lower modes. Try connecting it directly to the computer.

Video calls look worse than the test

Call apps choose the resolution they send based on your connection, the other person's connection, window size and their own limits. So a camera that supports 1080p may still send 720p or less during a call. Check the app's video settings for an HD option, and make sure the selected camera there is the physical webcam, not a virtual one.

No image or the camera is not listed

Confirm camera permission for the app or browser, close any other app holding the camera, and reconnect an external camera. A laptop may also have a hardware privacy switch or keyboard shortcut that disables the camera. If the camera still does not appear, check for driver or system updates from the device maker.

Different tools report different numbers

This is normal. The Camera app, the browser and call software each pick their own mode from what the camera supports. Use the full list of modes, such as the Camera app dropdown or the Linux format list, to learn the camera's maximum. Use a recorded file or a browser test to see what a specific app actually uses.