What Is My Screen Resolution?

See your screen resolution, viewport size, pixel ratio and color depth.

Your screen resolution
Detecting…
Screen resolution–
Physical pixels–
Browser viewport–
Device pixel ratio–
Available screen area–
Color depth–
Aspect ratio–
Orientation–

Values update when you resize the window, zoom or rotate the device.

What the numbers mean

Screen resolution is the size of your display in CSS pixels, as your operating system presents it after scaling. Physical pixels is that size multiplied by the device pixel ratio, which matches the native resolution printed on the box when browser zoom is 100%. Browser viewport is the area available to web pages in the current window.

Common resolutions

NamePixelsAspect ratio
HD (720p)1280 × 72016:9
Full HD (1080p)1920 × 108016:9
QHD (1440p)2560 × 144016:9
4K UHD3840 × 216016:9
Ultrawide QHD3440 × 144021:9 (43:18)

Frequently asked questions

Why is the resolution shown lower than my monitor's native resolution?

Operating systems scale high-density displays. Browsers report the scaled size in CSS pixels; multiplying by the device pixel ratio gives the physical resolution, which is shown as "Physical pixels".

What is the viewport?

The viewport is the part of the browser window that displays the page, without toolbars, tabs or the taskbar. It is the size that matters for responsive web design.

What is device pixel ratio?

It is the number of physical pixels used for one CSS pixel. A ratio of 1 is a standard display, 2 is a typical "Retina" or HiDPI display, and phones are often 2.5 to 3.5. Browser zoom changes it too.

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