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28-inch 4K monitor sharpness: PPI and Retina distance

By TechCompare · Updated · How we check

157 PPI puts 4K detail on a 28-inch screen. Single pixels stop being visible at 22 inches (55 cm) away, so text looks clean at a normal desk distance.

Same 1.57 × 0.79 in (40 × 20 mm) of Screen, at Real Pixel Density

This simulation shows an identical 1.57 × 0.79 in (40 × 20 mm) physical patch magnified at native pixel resolution. It demonstrates how typography and curves render across different screen densities.

Standard 24-inch 1080p92 PPI · 145×72 px

Standard desktop baseline with noticeable pixel staircasing on fine text.

28" 4K monitor157 PPI · 248×124 px

Very sharp text with smooth curves. Pixels blend together with no visible steps.

Diagonal physical size: 28 inches (71.1 cm)
Native resolution: 3840 × 2160
This exact 3840×2160 at 28″ panel, pre-loaded. Compare another size or try a second panel.
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A 28-inch 4K monitor delivers 157.35 PPI from 3840 × 2160 pixels, or 8.29 million in total. That's less dense than 27-inch 4K at 163 PPI and denser than 32-inch 4K at 138 PPI. You get more room for windows than on a 27-inch panel, and the trade is pixel density.

Pixel density
157.35 PPI
3840×2160 at 28″
Retina distance
22 in (55 cm)

Recommended monitors

Based on the specs on this page, here are the monitors TechCompare recommends.

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How this is calculated

Retina distance is 22 inches (55 cm). That's a little farther than a 27-inch 4K panel, because the density is lower. BenQ's spec page for the EW2880U lists a 28-inch screen at 3840x2160 and 157 PPI. This page works out 157.35 PPI from the same size and resolution, which rounds to BenQ's figure.

Verdict

Pick 28-inch 4K when you want a little more width than a 27-inch panel and more density than a 32-inch one. The screen gives 8,294,400 pixels across 335 square inches (2161 cm²), and at its Retina distance of 22 inches (55 cm) the grid is invisible. If text looks small at the default, display scaling raises it, and the 27-inch 4K scaling guide covers the same resolution.

More Monitors scenarios

24" 1080p monitor
A 24-inch 1080p monitor works out to 91.79 PPI, the baseline pixel density most people grew up with and the point where standard sub-pixel font rendering still looks crisp at a typical desk distance.
View details
24" 1440p monitor
A 24-inch 1440p monitor delivers 122.38 PPI, a high density for a desktop panel.
View details
27" 1080p monitor
A 27-inch 1080p monitor works out to 81.59 PPI, a low pixel density that gives the same 1920×1080 grid larger physical pixels than on a smaller panel.
View details

Related guides

28" 16:9 monitor screen size
Width and height of a 28-inch 16:9 panel, the size this 4K screen uses.
View guide
27" 4K monitor PPI
The same 4K grid one size down, for a direct density check.
View guide
32" 4K monitor PPI
The same 4K grid at 32 inches, the next size up.
View guide
27" 4K scaling settings
Display scaling settings for the same resolution at 27 inches.
View guide

Frequently asked questions

Is a 28-inch 4K monitor sharp enough for text?
At 157 PPI, text is clean at a normal desk distance. Single pixels stop being visible at 22 inches (55 cm) away, so the pixel grid only shows when you sit inside that distance.
Does a 28-inch 4K monitor need display scaling?
Not always. Scaling makes text and icons larger, and a 3840 × 2160 desktop packs a lot of detail into 28 inches, so some people raise it. The 27-inch 4K scaling guide covers the same resolution at a slightly smaller size.
How many pixels does a 28-inch 4K monitor have?
8,294,400 pixels in total, or 8.29 million. The 28-inch diagonal spreads them across 335 square inches (2161 cm²) of screen.

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