DPI / PPI Checker

    Find your screen's pixels per inch. Enter your diagonal size for precise results, or browse common displays.

    Your Display (Estimated)

    Detecting display...

    Estimated physical

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    CSS screen

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    DPR

    1x

    Values appear after your browser reports screen dimensions. Some embedded contexts only expose viewport data.

    Device Pixel Ratio (DPR) scales CSS pixels to physical device pixels. A 1920x1080 logical screen at 2x DPR is roughly 3840x2160 hardware pixels wide/tall. True PPI (pixels per inch) still needs your panel's physical diagonal. Use our Monitor Size Calculator to calibrate, then plug width, height, and diagonal into the calculator below.

    PPI Calculator

    Common Displays

    DisplayResolutionSizePPI
    MacBook Pro 14"3024x196414.2"
    254
    MacBook Air 13"2560x166413.6"
    225
    iMac 24"4480x252023.5"
    219
    Dell U2723QE 27"3840x216027"
    163
    iPhone 15 Pro2556x11796.1"
    461
    iPad Pro 12.9"2732x204812.9"
    265
    Samsung S24 Ultra3120x14406.8"
    505
    Full HD 24"1920x108024"
    92
    4K 27"3840x216027"
    163
    1440p 27"2560x144027"
    109