InspectMyPC Tool
Screen Resolution Checker
Instantly detect your screen resolution, viewport size, pixel density, and display characteristics.
Screen Resolution
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Physical display
Viewport Size
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Browser window
Pixel Ratio
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Color Depth
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Orientation
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Available Size
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Excl. taskbar
Understanding screen resolution.
Screen resolution tells you how many pixels your display can show. A higher resolution means more detail and sharpness. Combined with pixel ratio (DPR), it determines how crisp images and text appear.
Common resolutions: HD (1280×720), Full HD (1920×1080), 2K (2560×1440), 4K UHD (3840×2160). On HiDPI displays, CSS uses logical pixels while the screen uses physical pixels — so a DPR of 2× means 4× as many physical pixels.
FAQ
Common questions.
Screen resolution is the number of pixels displayed on your screen, expressed as width × height (e.g., 1920×1080). Higher resolution means more pixels and sharper images.
Screen resolution is your physical display size in pixels. Viewport size is the visible area of your browser window, which is smaller than the screen because of browser UI elements like the address bar.
Pixel ratio (Device Pixel Ratio / DPR) is the ratio of physical pixels to CSS pixels. A DPR of 2 means 4 physical pixels per CSS pixel, resulting in sharper images on HiDPI/Retina displays.
4K displays have a resolution of 3840×2160 or higher. Retina is Apple's marketing term for displays with a DPR ≥ 2, where individual pixels are too small for the human eye to distinguish at typical viewing distances.
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