Screen resolution is the number of pixels your display shows, written as width by height, such as 1920 by 1080. Knowing it matters for wallpapers, games, design work, and tech support. This guide shows you how to check it, and how to tell screen resolution apart from browser window size.
Screen resolution versus window size
Your screen resolution is the full display: 1920 by 1080 means the monitor shows 1,920 pixels across and 1,080 down. Your browser window size is often smaller, since the window may not be maximized. Websites see the window size, not the screen size, which is why an online checker can report two different numbers. For wallpapers and monitor shopping, use the screen number; for web design, use the window number.
Step-by-step: check on Windows
- Right-click an empty area of the desktop and choose Display settings.
- Under Scale and layout, find Display resolution.
- The value marked Recommended is your monitor’s native resolution, the sharpest one it supports.
- If you have more than one monitor, select each display at the top of the panel to check it separately.
Step-by-step: check on Mac
- Open the Apple menu and go to System Settings.
- Select Displays in the sidebar.
- Your current resolution appears under the display preview, next to the scaling options.
- Hold Option while clicking Displays for extra detail options.
Common resolutions and what they mean
- 1366 by 768: HD, common on older laptops.
- 1920 by 1080: Full HD, the most common desktop resolution.
- 2560 by 1440: Quad HD, popular for design and gaming.
- 3840 by 2160: 4K Ultra HD, very sharp but demanding on graphics hardware.
The scaling trap
Modern systems scale the display, showing larger text on high-resolution screens. A 4K monitor with 150 percent scaling may report a logical resolution lower than its physical one. For buying wallpapers or checking hardware, use the physical number; for layout work, the scaled number is what your apps actually use.
Try it the faster way
Check your screen resolution instantly with the tool below.
Prefer the full page? Open the PC resolution informer directly.
Quick tips
- The Recommended value in display settings is your monitor’s native resolution.
- Screen resolution and browser window size are different numbers.
- Check scaling settings when a high-resolution screen reports a lower number.
Checking resolution takes ten seconds in display settings. Know whether you need the screen number or the window number, and check the Recommended value for the sharpest setting.
Frequently asked questions
What resolution should I pick for a new monitor? 1920 by 1080 suits most everyday use and gaming on a budget. 2560 by 1440 suits design work and larger screens. 4K suits video editing and very large displays, but demands stronger graphics hardware and scaling to keep text readable.
Why does my 4K monitor report a lower resolution? Because of display scaling: the system renders at 4K but presents a larger logical size so text stays readable. The physical resolution is still 4K; the reported number is the scaled workspace. Check advanced display settings for the physical figure.
Does higher resolution always look better? Not by itself. A high-resolution screen with poor color or low brightness can look worse than a good Full HD panel. Resolution, panel quality, and size all matter together, so judge monitors as a whole.
Worked example
You buy a wallpaper labeled 1920 by 1080 for a Full HD monitor, and it fits perfectly. Then you open the same wallpaper on a 4K monitor and it looks soft, because it is being stretched to 3840 by 2160. The fix is a 4K version of the image, not a settings change. Conversely, a 4K wallpaper on a Full HD screen looks fine but wastes download size. Matching the image to the screen’s physical resolution, found under the Recommended display setting, avoids both problems.