What Is My Screen Resolution
See your display resolution, browser viewport, pixel ratio and aspect ratio — updated live as you resize or rotate.
Aspect ratio calculator
Common screen resolutions
| Name | Resolution | Aspect ratio | Pixels | Notes |
|---|
About this tool
Whether you're picking a wallpaper, filing a bug report, buying a replacement monitor or testing a responsive layout, the first question is always the same: what is my screen resolution? This page answers it instantly and keeps answering as you resize the window, rotate your phone or drag the browser to another monitor. You get the full screen resolution, the available area outside the taskbar, the browser viewport web pages actually see, the device pixel ratio, the true physical pixel count, color depth, orientation and whether the device supports touch.
Below the live tiles, the aspect ratio calculator reduces any width and height to its simplest form — handy for cropping video, sizing thumbnails or checking whether that ultrawide is really 21:9 — and the reference table lists common desktop, laptop, phone and tablet resolutions with their ratios and pixel counts, highlighting the row that matches your own display. Everything is read straight from your browser on your device; no data is collected or transmitted, so it's safe to use on work machines and locked-down networks alike.
How to check your screen resolution
- Open this page — your screen resolution and viewport appear immediately at the top.
- Resize the window, rotate your device or move the browser to another monitor and watch the tiles update live.
- Use the aspect ratio calculator for any custom size, and compare your display with the common resolutions table.
Frequently asked questions
Why is the browser viewport smaller than my screen resolution?
The viewport is only the area where web pages are drawn. Your operating system's taskbar or dock, the browser's tabs, address bar and bookmarks bar, and any window borders all take space away from it. Maximise or full-screen the browser (F11 on Windows) and the viewport will get much closer to the full screen size.
What is device pixel ratio and why is it not 1?
Device pixel ratio (DPR) is how many physical hardware pixels make up one CSS pixel. Retina and most phone screens pack two or three physical pixels into every CSS pixel so text looks sharp, which is why a phone with a 1170×2532 panel reports a 390×844 screen to websites. Windows display scaling of 125% or 150% produces fractional ratios like 1.25 or 1.5.
Why does the resolution shown here differ from my monitor's native resolution?
Browsers report the screen in CSS pixels, which already have your operating system's display scaling applied. A 2560×1440 monitor set to 150% scaling shows as 1707×960 here. Multiply by the pixel ratio — shown on the Physical pixels tile — to get back to the real hardware resolution.
What is the most common screen resolution?
On desktops and laptops 1920×1080 (Full HD) is the most common, followed by 1366×768 on budget laptops and 1536×864 which is a 1920×1080 panel at 125% scaling. On phones, widths of 360 to 430 CSS pixels cover almost every modern device, with heights between 740 and 932 pixels.
Which resolution should I design or test websites for?
Design for a range rather than a fixed size: around 360–430 px wide for phones, 768–1024 px for tablets and 1280–1920 px for desktops. Use this page on each of your devices to see the real viewport, and remember that users with scaled displays and zoomed browsers see far fewer CSS pixels than their monitor's marketing resolution suggests.