Screen Resolution Checker
Find your screen resolution, viewport size, pixel ratio, true physical resolution, colour depth and aspect ratio. Free and runs in your browser.
Everything is read directly from your browser — nothing is uploaded or stored.
About Screen Resolution Checker
The Screen Resolution Checker answers “what is my screen resolution” instantly and then goes further than most: it reports your screen resolution in CSS pixels, your browser viewport, the device pixel ratio, the true physical resolution those two imply, the available screen area (what remains after the taskbar or dock), color depth, orientation, aspect ratio and the closest standard resolution class your display matches.
The distinction between the numbers matters. Screen resolution is what the operating system reports for the whole display; the viewport is only the part your browser page can actually use; and on high-density screens the device pixel ratio multiplies CSS pixels into hardware pixels — a laptop reporting 1512 × 982 at a 2× ratio is physically a 3024 × 1964 panel.
Everything is read directly from your browser, so nothing is uploaded or stored. The viewport values update live as you resize or move the window — useful when checking responsive breakpoints — and a Copy all button captures the full readout for a bug report or support ticket.
How to use Screen Resolution Checker
- Open the page — your resolution, viewport, pixel ratio and other display values appear immediately.
- Compare the screen resolution with the physical resolution to see how display scaling affects your machine.
- Resize or move the browser window and watch the viewport values update live.
- Check the aspect ratio and the closest standard match to identify your display class.
- Press Copy all to put the complete readout on your clipboard.