Screen Resolution Checker

Find out your screen resolution, browser window size and pixel ratio — updated live when you resize or rotate.

FreeNo sign-upRuns in your browserMobile-friendly

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What does the Screen Resolution Checker do?

Screen resolution is reported in CSS pixels; multiply by the device pixel ratio (DPR) to get physical pixels. A phone reporting 390 × 844 with a DPR of 3 has a 1170 × 2532 physical display. The viewport is the visible area of the browser window, which is what websites actually design for.

Browser zoom changes the DPR, so set zoom to 100% for accurate readings.

How to use the Screen Resolution Checker

  1. Open the page — values appear instantly.
  2. Resize the window or rotate your device to see live changes.
  3. Copy the details if needed.

Examples

Laptop

1536 × 864 screen at DPR 1.25 = 1920 × 1080 physical pixels.

Common use cases

  • Choosing wallpaper and image sizes
  • Web design and responsive testing
  • Support requests about display issues

Features and benefits

  • Private by design — your data is processed on your device and never uploaded.
  • Free with no account, no watermark and no usage limits.
  • Works on phones, tablets and desktops in any modern browser.

Limitations to know

  • Multiple monitors report the screen the browser window is on.

Frequently asked questions

Why is my resolution lower than advertised?

Operating systems scale the display; screen width × DPR gives the physical resolution.

What is the viewport?

The visible area inside the browser window.

Does zoom affect results?

Yes, zoom changes the device pixel ratio.

Embed this tool on your website

Add the free Screen Resolution Checker to your blog or website. Paste the code into your page’s HTML; the tool runs in your visitors’ browsers and stays up to date automatically. Please keep the credit line below the tool.

Free to use on any website. The tool runs inside an iframe served from viptools.pk; nothing your visitors type is sent to your site or ours. Preview the embedded version.

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