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What is my screen resolution?

The size of your screen and of this window, as your browser reports them. Nothing is sent anywhere.

Private by design: this tool runs in your browser. Nothing you add is uploaded.

How to use it

  1. Open this page. Your screen size and window size appear straight away.
  2. Resize the window to see the window size change.
  3. Copy the numbers if someone asks for your screen resolution.
Screenshot of the What is my screen resolution? tool on Sureno, in use
What is my screen resolution? in use: a real screenshot of this page.

Questions and answers

Why are there two sizes?

The screen size is the whole display. The window size is this browser window. On a sharp screen, one CSS pixel is drawn with more than one physical pixel.

Is any of this stored?

No. It is read in this page and shown only to you.

What is pixel ratio?

How many real screen dots make up one page pixel. Sharp "Retina" screens usually have 2 or 3.

Related tools

What browser do I have?Your browser, its version, your system and screen, at a glance.Aspect ratio calculatorSimplify a width and height, or find the missing side.PX to REMConvert pixels to rem, and rem to pixels.What is my IP address?See the IP address websites see when you visit them.Contrast checkerCheck whether two colours are easy to read together.Vision test (eye chart) NewA quick eye-chart check at home, sized to your own screen. Not a replacement for an eye exam.

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