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Screen Resolution Checker

What is my screen resolution? See your screen size, viewport, pixel ratio and display features.

Loading tool…

How to use the Screen Resolution Checker

  1. 1

    Open the tool: your screen details appear instantly.

  2. 2

    Resize the window to watch the viewport size update.

  3. 3

    Copy the summary to share it, e.g. in a bug report.

Frequently asked questions

Why is the resolution lower than my monitor's?

Websites measure in CSS pixels. On high-density displays one CSS pixel covers several physical pixels; multiply by the device pixel ratio for the physical resolution.

What is the viewport?

The area of the browser window that shows the page. It is what responsive designs and media queries respond to.

Is any of this sent to a server?

No. The values are read by your browser and shown only to you.