Pixels Per Inch PPI Converter

The Pixels Per Inch (PPI) is calculated using the formula:
PPI = √(Width² + Height²) / Diagonal

Pixels Per Inch (PPI) is a measure of pixel density or resolution of a display screen, describing how many pixels exist per inch of the display surface. Higher PPI means sharper and more detailed visuals.

Examples:

1080p 24-inch monitor: ~92 PPI
4K 27-inch monitor: ~163 PPI
Retina display MacBook Pro 16-inch: ~226 PPI
Smartphone with 6-inch 1440p display: ~490 PPI

Width (pixels)

Height (pixels)

Diagonal (inches)