1080p is 920px tall – 1k real browser viewports

In plain words

This tool displays actual browser viewport sizes for common screen resolutions, helping designers and developers understand real display dimensions. It's built for anyone creating websites or applications who needs to verify how content renders at different screen sizes. The resource focuses on practical viewport measurements rather than marketing claims, making it useful for testing responsive design across devices.

written from the facts on this page · September 2026

From the sources

ScreenSize.net is a live screen checker that shows your current viewport dimensions, screen resolution, device pixel ratio, and other specs in real-time — no DevTools needed. Perfect for: • Testing responsive breakpoints as you resize • Sharing exact screen specs with clients or designers • Quick reference on mobile devices (where DevTools isn't available) • Comparing your screen with target devices (iPhone, iPad, MacBook, etc.) Built with Astro + TypeScript, deplolazing-fast global performance.

Anonymous aggregate viewport measurements from ScreenSize.net browser sessions, with sample size, quality exclusions and methodology shown alongside the results. These observations describe qualified ScreenSize.net sessions during the reporting period. They are not global device or browser market-share estimates. The most common desktop viewport is 1920 × 920 CSS pixels, representing 15.7% of 648 snapshot samples shown. The most common mobile viewport width is 400px, representing 64.1% of 103 snapshot samples shown. The most common device pixel ratio bucket is 1.00×, representing 64.6% of 751 snapshot samples shown. Each environment is evaluated independently. Rankings stay hidden until…from screensize.net

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