Screen Resolution Info
See your screen resolution, viewport, and pixel ratio.
What your screen reports
Browsers expose several sizes: the physical screen resolution, the CSS viewport, and the device pixel ratio that maps them. A Retina display reports a DPR of 2, so 1440 CSS pixels are 2880 physical.
It is useful for filing a responsive bug report, checking whether a display is running at its native resolution, or confirming the device pixel ratio before exporting assets.
Why the numbers differ
High-density screens pack more physical pixels than CSS pixels, which is why layouts use the smaller figure. All values are read on your device and never uploaded.
Frequently Asked Questions
How does the screen resolution info work?
The page reads browser viewport size, screen size, device pixel ratio, and orientation using standard browser properties.
When should I use this tool?
Use it to debug responsive breakpoints, screenshots, device testing, and CSS media-query behavior.
What is the main limitation?
Browser zoom and operating-system scaling can change CSS pixel values.
Is this converter private?
Yes. It runs entirely in your browser, so your values are not uploaded or stored.
More free browser utilities for conversion, formatting, and technical cleanup.