What Is My Screen Resolution?
Check your screen resolution, viewport size, and pixel ratio
Detecting screen resolution...
Frequently Asked Questions
What is screen resolution?
Screen resolution is the number of pixels displayed on your screen, expressed as width × height (e.g., 1920×1080). Higher resolution means more pixels and sharper images.
What's the difference between screen resolution and viewport size?
Screen resolution is the physical pixel count of your display. Viewport size is the area of the browser window where web content is rendered — it changes when you resize the browser, but your screen resolution stays the same.
What is device pixel ratio (DPR)?
Device pixel ratio is the ratio of physical pixels to CSS pixels. A DPR of 2 means every CSS pixel is rendered as 2×2 physical pixels, which is what Apple calls a Retina display. Higher DPR means sharper text and images.
What is the most common screen resolution?
As of 2024, 1920×1080 (Full HD) is the most common desktop resolution worldwide. On mobile, sizes like 390×844 (iPhone 14) and similar tall aspect ratios dominate.
Why does my viewport size change when I resize the browser?
The viewport is the visible area of the browser window. Resizing the window changes the viewport dimensions, but your screen resolution — the physical pixel count of your monitor — remains constant.