28" 4K (UHD) PPI: pixel density & viewing distance
A 28-inch monitor at 3,840 × 2,160 (4K (UHD), 16:9) has a pixel density of about 157.4 PPI. Here is what that means for sharpness and how far away to sit.
Recommendations are planning estimates, not electrical or purchasing advice. The hardware figures behind them are vendor-published; your exact board-partner model and build can still differ.
Pixel density
157.4 PPI
Very high density (125+ PPI)
Pixel pitch
0.161 mm
Distance between the centres of adjacent pixels.
Retina distance
55 cm
Closest distance at which 20/20 vision can no longer resolve individual pixels.
Comfortable range
55–83 cm
From the retina distance out to 1.5× it.
At a typical ~70 cm desk distance, this panel already looks "retina" — individual pixels are not resolvable. Total pixels: 8,294,400.
Very high density (125+ PPI)
- Office —
- Office: print-like text, but you will want 125-200% OS scaling — check the apps you rely on handle it well.
- Gaming —
- Gaming: superb clarity and heavy GPU demands; plan the graphics card budget around it.
- Design —
- Design: excellent for detail-critical work — this is where 4K at 27-32" sits.
Comparing a different size or resolution? Open the PPI Calculator with these values pre-filled →
Frequently asked questions
What is the PPI of a 28-inch 4K (UHD) monitor?
A 28-inch display at 3,840 × 2,160 works out to about 157.4 pixels per inch (PPI), with a pixel pitch of 0.161 mm.
Does a 28-inch 4K (UHD) monitor look sharp at a desk?
Yes. Its "retina" distance — where a person with 20/20 vision can no longer pick out individual pixels — is about 55 cm, which is within a typical ~70 cm desk viewing distance, so it looks crisp at the desk.
What viewing distance suits a 28-inch 4K (UHD) monitor?
A comfortable range is roughly 55 cm to 83 cm: closer and pixels become visible, farther and you stop benefiting from the resolution.