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What is My Screen Resolution?

What is My Screen Resolution? — Check Your Display Info Instantly

Ever wondered what your screen resolution actually is? Whether you're a web designer testing layouts, a gamer optimizing settings, or just curious about your display, knowing your screen resolution is essential. Screen resolution refers to the number of pixels displayed on your screen, typically expressed as width × height (e.g., 1920 × 1080). It determines how sharp and detailed images and text appear on your monitor. Our free tool instantly detects your screen's resolution, viewport size, device pixel ratio, color depth, and more — all directly from your browser with no data stored or transmitted. It works on desktops, laptops, tablets, and phones. Web developers and designers use this information to test responsive layouts, ensure proper media query breakpoints, and verify that their designs render correctly across different screen sizes. Gamers check resolution for optimal game settings. Everyday users can confirm their display specifications for purchasing monitors or troubleshooting display issues. The tool also reveals your device pixel ratio (DPR), which is especially important for Retina and HiDPI displays. A DPR of 2x or 3x means the display packs more physical pixels per CSS pixel, resulting in crisper visuals. Understanding your screen's capabilities helps you make informed decisions about display settings, monitor purchases, and content creation. Try it now — it takes just a second and requires no setup or permissions.

Key Features

  • Instant detection of screen resolution (width × height)
  • Viewport (browser window) size in real-time
  • Device pixel ratio for Retina / HiDPI displays
  • Color depth and screen orientation info
  • Available screen space (excluding OS taskbars)
  • Works on desktop, tablet, and mobile devices

Common Use Cases

  • Web developers testing responsive layouts and breakpoints
  • Gamers checking native resolution for optimal settings
  • Designers verifying pixel-perfect mockups
  • Troubleshooting display and scaling issues
  • Checking specs before buying a new monitor
  • Quick reference for CSS media query development

Frequently Asked Questions

Screen resolution is the number of pixels displayed on your screen, measured as width × height. For example, 1920 × 1080 means the screen displays 1,920 pixels horizontally and 1,080 pixels vertically.

Screen resolution is the total pixel count of your physical display, while viewport size is the visible area of your browser window (which can be smaller if the browser isn't maximized or if toolbars are visible).

Device Pixel Ratio (DPR) is the ratio between physical pixels and CSS pixels. A DPR of 2 means each CSS pixel is represented by 2×2 physical pixels, which is common on Retina and HiDPI displays for sharper visuals.