720p HD PPI on Different Screens
Pixel density for 720p HD (1280×720) resolution on various screen sizes.
13 inch113 PPI14 inch105 PPI15.6 inch94 PPI17 inch86 PPI21.5 inch68 PPI24 inch61 PPI27 inch54 PPI32 inch46 PPI34 inch43 PPI40 inch37 PPI43 inch34 PPI49 inch30 PPI55 inch27 PPI65 inch23 PPI75 inch20 PPI