ScreenPPI
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Resolution · diagonal · density

Calculate screen pixel density without guessing.

Enter native width, height and visible diagonal to get PPI, pitch and physical dimensions.

Local exact inputs

Screen geometry

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px

Use the active visible panel diagonal and native pixel dimensions. This calculator does not rate image quality, viewing distance, eyesight, or medical-display suitability.

Calculated geometry

Screen density result

Pixel density139.867122 PPI55.065796 px/cm · 0.181601 mm
Physical size27.454629 × 15.443229 in
Metric size69.734759 × 39.225802 cm
Pixel diagonal4405.81434 px
Reduced aspect ratio16:9
Total pixels8294400
Megapixels8.2944 MP

√(3840² + 2160²) ÷ 31.5 in = 139.867122 PPI

Displayed derived values are rounded to six decimal places; entered whole pixel counts remain exact.