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PPI of a 24-inch 1440p monitor is 122 PPI

A 24-inch 1440p monitor delivers 122.41 PPI — genuinely high density for a desktop panel. This is the territory where text starts to look print-quality at normal desk distance and sub-pixel rendering artefacts become essentially invisible to the eye.

Pixel density
122.38 PPI
2560×1440 at 24″
Retina distance
28 in
71 cm

Calculator

PPI & Retina Calculator

Screen A

Pixel Density122 PPI
Retina Distance
28 inches71 cm

How this is calculated

Retina distance works out to 28 inches (71 cm), which is roughly where most people sit at a desk. The flip side of the high density is that native UI elements become small: Windows and macOS both assume ~96 PPI by default, so you'll want 125% display scaling on Windows (or just rely on macOS's Retina scaling on a Mac) to keep menus and buttons comfortable.

Verdict

122 PPI is a niche sweet spot — sharper than 27-inch 1440p and physically smaller, so it suits tight desks and anyone who prefers visual density over real estate. You'll need OS scaling to make the native 1440p workspace feel like a typical 1440p monitor rather than shrunk-down 4K.

More Monitors scenarios

24" 1080p monitor
24-inch 1080p monitor is 92 PPI
View details ➜
27" 1080p monitor
27-inch 1080p monitor is 82 PPI
View details ➜
27" 1440p monitor
27-inch 1440p monitor is 109 PPI
View details ➜
27" 4K monitor
27-inch 4K monitor is 163 PPI
View details ➜
32" 1440p monitor
32-inch 1440p monitor is 92 PPI
View details ➜
32" 4K monitor
32-inch 4K monitor is 138 PPI
View details ➜
34" ultrawide (3440×1440)
34-inch 3440×1440 ultrawide is 110 PPI
View details ➜
49" super ultrawide (5120×1440)
49-inch 5120×1440 super ultrawide is 109 PPI
View details ➜

Frequently asked questions

How do I calculate PPI for a 27-inch 1440p monitor?
Take the diagonal pixel count (sqrt(2560² + 1440²) ≈ 2938 pixels) and divide by the diagonal size in inches. For a 27-inch 1440p display that gives roughly 109 PPI, which is the standard density for a mainstream QHD monitor.
What is considered a high PPI or Retina display?
A display is considered Retina-class when, at the intended viewing distance, a human eye can no longer resolve individual pixels (about 1 arc-minute of visual angle). On a phone that's roughly 300+ PPI; on a typical desktop monitor viewed from 60-80 cm, it's around 160-220 PPI.
What is Retina distance and how is it calculated?
Retina distance is the minimum viewing distance at which the human eye can no longer distinguish individual pixels. Using the 1 arc-minute threshold, the distance in inches is approximately 3438 divided by the display's PPI. Sit further than that value and the screen looks pixel-perfect.
Does higher PPI always mean a sharper image?
Higher PPI means smaller pixels, which only matters if you're close enough to see them. A 4K TV at 3 metres can look identical to a 1080p TV at the same distance because you're already beyond Retina distance for both. PPI should always be judged together with viewing distance.
Why does the same resolution look sharper on a smaller screen?
Because the pixels are packed into a smaller area. A 24-inch 1080p monitor has about 92 PPI while a 27-inch 1080p monitor only has about 82 PPI, so the 24-inch version shows noticeably crisper text and images even though both are the same resolution.
What PPI should I look for when buying a monitor?
For productivity and text work, aim for at least 100 PPI — that's roughly 1440p at 27 inches or 4K at 32 inches. Below 90 PPI (like 1080p at 27 inches) text starts to look soft without heavy font smoothing.

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