PPI Calculator

Calculate PPI (Pixels Per Inch) of any device. Enter horizontal & vertical resolution and display diagonal size in inches to calculate pixel density.


pixels per inch

FAQ about PPI


What is PPI

PPI stands for Pixels Per Inch and is used to describe the pixel density of displays. It quantifies the number of pixels per square inch of a display.

Is higher PPI better?

PPI tells how sharper is your display. Higher the number, the display is crisper and less pixelated. Which means rendering of videos, images, fonts will be better and smoother.

Are PPI and DPI the same?

DPI vs PPI is one of the consfusing term as, often PPI and DPI are used interchangeably.

  • DPI stands for dots per inch and refers to amount ink dots on a printed image or the resolution of a printer.
  • PPI describes the resolution of a digital image or resolution of a display.

How to calculate PPI? PPI calculator formula

First calculate number of pixels along the diagonal. Then divide this diagonal pixel with the diagonal size in inches.
PPI = √(w² + h²)/d

  • w: Horizontal Resolution
  • h: Vertical Resolution
  • d: Diagonal Size (inches)