Mac monitors use 72 PPI, and PCs use 96 PPI–Right?
No, it’s a myth. A monitor’s PPI (Pixels Per Inch) resolution only depends on its physical size and display settings. It doesn’t matter if it’s hooked to a Mac or a PC. Furthermore, a monitor set at 1600×1200 pixels will have a very different PPI value than it does at 800×600 pixels. If you’d like to know what a display’s actual PPI is, measure the length of the graphic below in inches with a soft ruler–a sewing tape or plastic ruler is safest for the screen–and then enter that value in the calculator under it.
