Standard Display PPI Reference

How to use this reference

Each configuration page shows the exact pixel density computed from the panel's resolution and diagonal: PPI, dot pitch, total pixels, aspect ratio, and the minimum viewing distance where individual pixels become invisible. Values are derived from the same deterministic formula used by the PPI calculator — nothing is estimated from marketing names.

The collection is organized by physical size, from 24-inch desktop panels to 75-inch living-room TVs, so you can compare how the same resolution scales across screen sizes — or how different resolutions sharpen the same diagonal.

Pixel density tiers for monitors

• Standard Density (~92–110 PPI): 24″ 1080p (92 PPI), 27″ 1440p (109 PPI), 34″ UWQHD (110 PPI). The default for desktop computing — crisp text at 100% scaling with no rendering penalties.
• High Density (~137–163 PPI): 32″ 4K (137 PPI) and 27″ 4K (163 PPI). Needs 125–150% OS scaling but rewards it with excellent clarity for coding, reading, and photo work.
• Retina Class (~218 PPI): 27″ 5K and 32″ 6K displays. Supports perfect 2× integer (HiDPI) scaling for print-like typography at arm's length.

Why bigger screens have lower PPI

Pixels per inch falls as the same pixel count stretches over a larger panel. 4K resolution supplies 163 PPI on a 27-inch monitor, 137 PPI at 32 inches, and about 80 PPI on a 55-inch TV — yet all three look sharp because viewing distance grows with screen size. A TV watched from 2.3 meters hides its larger pixels just as effectively as a monitor held at arm's length hides pixels at 163 PPI. Each page in this reference lists the minimum viewing distance that achieves that effect for its configuration.