How Pixels to Height Conversion Works
Pixel height doesn't have a fixed physical size — it depends on the PPI (Pixels Per Inch) of your output device. A 1080px tall image on a 96 PPI monitor is 28.58 cm tall, but on a 300 PPI print it's only 9.14 cm.
Height in CM
cm = (pixels ÷ PPI) × 2.54 Height in Inches
inches = pixels ÷ PPI