Screen resolution checker
Your browser reports your screen in CSS pixels and a pixel ratio. Multiplied, they give an estimate of the real resolution, which browser zoom and display scaling can change.
The live calculator needs JavaScript. Without it, the worked example below shows what it calculates.
What this browser reports
Reading your screen…
- Screen in CSS pixels
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- Device pixel ratio
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- CSS size × pixel ratio
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- Browser window
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Estimated resolution
- Estimate
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- Shape
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- This looks like browser zoom at , which the estimate undoes. If you did not zoom, enter your exact size below.
- This is not a common screen size, so browser zoom or display scaling is probably involved. Enter your exact size below.
- Phone browser: the size is shown in the phone’s own upright orientation.
- Your browser reports the window as the whole screen. Full-screen mode or privacy protection can do this, so check your display settings.
Enter your exact resolution
Settings › Display on Windows, System Settings › Displays on a Mac, or your phone maker’s spec page.
Everything is calculated in your browser. Nothing you type is sent or saved.
How to use it
- Open this page on the device you want a wallpaper for, in a normal browser window.
- Read the estimate. A note appears when zoom or privacy settings could have changed it.
- If the estimate is off, type the exact size from your display settings.
Example
A laptop with a 2560 × 1600 px panel at 125% Windows scaling reports 2048 × 1280 CSS pixels and a pixel ratio of 1.25: multiplied, that is 2560 × 1600 again.
Good to know
- Browser zoom changes the pixel ratio, so the same screen reads smaller when you zoom out. Reset zoom (Ctrl+0 or ⌘0) for a clean reading.
- With several monitors, the browser describes only the screen this window is on. Check each one, or use the multi-monitor calculator.
- Phones report their full screen. The image you see on the lock screen can be moved or zoomed by the system, so leave important details away from the edges.
- This is an estimate from the browser, not a reading of the physical panel. Your display settings or the maker’s specs have the exact value.