PPI Calculator (Pixel Density)

Check if your screen is "Retina" sharp.

Width (px)

Height (px)

Diagonal Size (Inches)

PPI (Pixels Per Inch)

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Understanding Screen Sharpness

What is a good PPI for a Monitor?

For desktop monitors (viewed at arm's length):

90-110 PPI: Standard (Decent sharpness).
110-140 PPI: Crisp (good for office work).
150+ PPI: "Retina" like (Very sharp, hard to see pixels).

Why higher PPI on phones?

You hold phones much closer to your face (10-12 inches). To make pixels invisible at that distance, phones need 300+ PPI. Most flagships (iPhone, Samsung) are 450+ PPI.

DPI vs PPI?

PPI (Pixels Per Inch) is for screens (glowing pixels). DPI (Dots Per Inch) is for printers (ink dots). However, people often use the terms interchangeably.