What is My Screen Size?

    Check your device's screen resolution, size, and display specifications in real-time

    Screen Resolution

    0 × 0

    Your device's actual screen resolution in pixels

    Viewport Size

    0 × 0

    Current visible area in your browser

    Pixel Density (DPR)

    1x

    Device pixel ratio for high-DPI displays

    Aspect Ratio

    Width-to-height ratio of your screen

    Physical Size

    0 × 0

    Approximate CSS pixels after DPR scaling

    Values update automatically when you resize or rotate your device

    What is My Screen Size? The Complete Guide to Display Measurements

    Understanding your screen size is crucial for everything from buying a monitor to designing websites. Whether you're a gamer looking for the perfect display, a designer creating responsive layouts, or just curious about your device's specifications, this guide will help you understand exactly what your screen measurements mean.

    How to Check Your Screen Size and Resolution

    Your screen size can be measured in two ways: physical dimensions (inches/centimeters) and pixel resolution. While our tool shows you the pixel resolution, you can calculate your physical screen size using these measurements and your device's pixel density (DPR). Most modern laptops come in sizes between 13" and 17", while desktop monitors typically range from 21" to 32" or larger.

    Understanding Screen Resolution

    Screen resolution defines how many pixels your display can show. Common resolutions include:

    • HD (1280×720) - Entry-level displays
    • Full HD (1920×1080) - Most popular resolution for gaming and everyday use
    • 2K/QHD (2560×1440) - Higher-end gaming monitors and professional displays
    • 4K/UHD (3840×2160) - Premium displays for content creation and high-end gaming
    • 5K and above - Professional video editing and specialized work

    Viewport Size vs. Screen Resolution: Why Both Matter

    While your screen resolution remains fixed, your viewport size changes as you resize your browser window. This distinction is crucial for:

    • Web developers testing responsive designs
    • UI designers ensuring consistent layouts
    • Content creators optimizing media for different devices
    • App developers building adaptive interfaces

    Display Quality and Pixel Density (DPR)

    Device Pixel Ratio (DPR) measures your screen's pixel density. A higher DPR means sharper images and clearer text:

    • 1x DPR - Standard density displays (older monitors)
    • 2x DPR - Retina displays (Most iPhones, MacBooks)
    • 3x DPR - Super Retina displays (High-end smartphones)
    • 4x DPR and above - Ultra-high-density displays

    Aspect Ratios and Their Uses

    Different aspect ratios serve different purposes:

    • 16:9 - Standard widescreen format, ideal for video content and gaming
    • 16:10 - Popular for productivity, offering extra vertical space
    • 21:9 - Ultrawide format, perfect for immersive gaming and multitasking
    • 19.5:9 / 20:9 - Modern smartphone ratios for better one-handed use
    • 3:2 - Found in Surface devices, balanced for both content creation and consumption

    Choosing the Right Screen Size

    Consider these factors when selecting a display:

    • Viewing distance - Larger screens need greater viewing distances
    • Usage purpose - Gaming, work, or entertainment have different optimal sizes
    • Available space - Consider your desk or mounting location
    • Resolution needs - Higher resolutions are better for detailed work

    Pro Tip: For optimal viewing, the distance between you and your screen should be approximately 1.5 to 2.5 times the screen's diagonal size. Use our screen size calculator above to find your perfect setup.

    You might also like