What is my screen resolution?
This is the resolution of the screen you are using now, worked out from what your browser reports. Display scaling can change it.
Your screen resolution
Reading your screen…
All the numbers
Reading your screen…
What changes this number, and what does not
- Display scaling. Windows' scale setting, macOS display modes and phone settings all change the pixel ratio your browser sees. The estimate is the screen size times that ratio.
- Not browser zoom. Zooming changes the pixel ratio and the CSS size, but the physical estimate (their product) should stay about the same. If it moves, press Ctrl + 0 (⌘ + 0 on a Mac) to go back to 100% and read it again.
- The panel itself. Some Macs and external displays draw at a higher internal resolution than the panel has, so the estimate can read higher than the specifications. Some phones read a pixel or two off because of rounding.
Questions
Resolution is the number of physical pixels your screen has. Scaling is how big the system draws things on it. A 3840 × 2160 screen scaled to 200% lays pages out like a 1920 × 1080 screen, only sharper.
No, zooming does not change your screen. Browsers may report a different pixel ratio and CSS screen size after you zoom, but the physical estimate (their product) should stay about the same. If it moves, reset your browser zoom to 100% and read it again. What does change it is your system's display scaling.
Read the physical resolution above, then check it against your system's display settings: Windows marks the panel's native resolution Recommended. The specifications of your screen are the final word.