Technology

Screen PPI Calculator

Pixel density and viewing distance.

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Results update instantly as you type — no submit needed.

Results
Pixel density
163.2 PPI
Dot pitch
0.1557 mm
Retina distance
1.76 ft
Total pixels
8,294,400

Quick answer

PPI is the diagonal pixel count divided by the screen's diagonal size in inches.

PPI = √(w² + h²) ÷ diagonal

How to use the Screen PPI Calculator

  1. 1Enter the horizontal and vertical pixel counts.
  2. 2Enter the diagonal screen size.
  3. 3Compare PPI against your viewing distance.

Frequently asked questions

What PPI looks sharp?

Above 110 PPI for desktop monitors at normal distance.

Is 4K worth it at 24 inches?

Yes for text sharpness, but scaling is usually required.