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Image & Photo Calculators

PPI Calculator

Screen pixel density from resolution and diagonal size, with the viewing distance it suits.

Enter values

Results update as you type.

Result

Pixel density

108.79 PPI

Diagonal in pixels
2,937
Aspect ratio
16 : 9
Screen width
23.53 inches
Screen height
13.24 inches
Pixels are invisible beyond
2.63 feet
Density class
Standard density

About the PPI Calculator

Screen pixel density from resolution and diagonal size, with the viewing distance it suits.

Also known as: pixels per inch, screen density calculator, display ppi, monitor pixel density.

How to use this calculator

  1. Enter horizontal resolution, vertical resolution, screen diagonal.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

PPI = √(width² + height²) ÷ diagonal in inches

Worked example

Using the values pre-filled in the calculator above:

  • Horizontal resolution = 2,560 px
  • Vertical resolution = 1,440 px
  • Screen diagonal = 27 inches

the calculator returns:

  • Pixel density: 108.79 PPI
  • Diagonal in pixels: 2,937
  • Aspect ratio: 16 : 9
  • Screen width: 23.53 inches