Screen Resolution Checker
Find your screen size, window size, pixel ratio and device details.
Your screen resolution
| Physical resolution (screen × pixel ratio) | — |
| Available screen area (minus taskbar) | — |
| Aspect ratio | — |
| Orientation | — |
| Device type (by width) | — |
| CSS breakpoint now active | — |
| Touch support | — |
| CPU threads reported | — |
| Device memory reported | — |
| Colour scheme preference | — |
| Reduced motion preference | — |
About the Screen Resolution Checker
Shows your screen resolution, the usable window size, the device pixel ratio and the CSS breakpoint currently in play. Resize the window and every number updates live, which makes it a quick way to test a responsive layout without opening developer tools.
Frequently asked questions
Why is my window size smaller than my screen?
The window excludes the browser's own toolbars, any open panels, and the operating system taskbar or dock.
What is device pixel ratio?
How many physical screen pixels make up one CSS pixel. A value of 2 or 3 means a high-density display, where images need to be twice or three times the size to look sharp.
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