Instantly detect your display resolution, viewport size, DPI, pixel ratio, aspect ratio, color depth and refresh rate — live, in your browser. No clicks needed.
All values update live as you resize your browser window.
Enter your screen diagonal size to calculate pixels per inch.
See which Tailwind, Bootstrap & media-query breakpoint your current viewport hits.
| Framework | Name | Range (px) | Status |
|---|
Your current resolution is highlighted. All values show physical screen pixels.
| Device | Resolution | Viewport CSS | DPR | Category | Match |
|---|
Results appear the moment you land. No "Check Now" button required — unlike most competitors who make you click first.
Resize your browser window and watch every metric update in real time. Viewport, breakpoints, orientation — all live.
Resolution, viewport, DPR, aspect ratio, color depth, refresh rate, PPI, orientation, HDR, touch support — all on one page.
Clean card layout, high-contrast text, mobile-first design. Zero alignment issues at any screen size.
Zero server calls. All detection runs purely in your browser via JavaScript APIs. Nothing is logged or stored.
Hit "Copy Specs" and paste a structured report directly into your bug tracker, Slack, or Jira ticket.
Screen resolution is the number of pixels your display renders, expressed as width × height (e.g., 1920 × 1080). Higher resolution means more pixels and sharper images.
Screen resolution is the full physical pixel count of your hardware. Viewport size is the CSS pixel area available inside your browser window — it's smaller because it excludes the browser toolbar, OS taskbar, and other UI chrome.
DPR is how many physical pixels back each CSS pixel. A DPR of 2 (Retina) means the display uses 2×2 physical pixels per logical pixel, giving sharper text and images. Standard HD monitors have DPR of 1.
We use requestAnimationFrame to count frames over one second, giving an accurate real-world measurement of your display's refresh rate in Hz.
Yes! screenresolutionsize.com is fully responsive and works on iPhones, Android phones, iPads, and tablets. It auto-detects portrait vs landscape orientation.
Absolutely. Everything runs in-browser via standard JavaScript APIs. No data leaves your device. We don't use cookies for tracking.
For desktop monitors: 90–110 PPI is standard. 110–140 PPI is sharp. 140+ PPI is "Retina" quality. Smartphones typically have 300–460 PPI.
Windows and macOS scale 4K displays by default (DPR 2×). Your screen hardware is 3840×2160 but your OS reports 1920×1080 logical pixels to apps. DPR will show 2× to confirm this.