PPI Pixel Density Calculator

Calculate screen PPI from resolution and diagonal size, plus total megapixels.

Width (px):

Height (px):

Diagonal (inches):

How to use

Enter resolution and screen size to get PPI.

What PPI is a 1080p 24-inch monitor?

About 92 PPI. A 27-inch 4K monitor is ~163 PPI.

What PPI is 'Retina'?

Apple uses ~300+ PPI for phones held close; ~220 PPI for laptops.

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