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PPI of an iPhone 15 Pro is 461 PPI

The iPhone 15 Pro's 6.1-inch 1179×2556 Super Retina XDR OLED works out to 461.45 PPI — rounded by Apple's marketing to 460 PPI. That's roughly three times the density of a mainstream 24-inch 1080p monitor, packed into a handheld form factor.

Pixel density
461.44 PPI
1179×2556 at 6.1″
Retina distance
7 in
19 cm

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PPI & Retina Calculator

Screen A

Pixel Density461 PPI
Retina Distance
7 inches19 cm

How this is calculated

Retina distance at 461 PPI is just 7.5 inches (19 cm). Phones are normally held at around 30–40 cm, so the display is well past Retina by an order of magnitude — you'd need a loupe to see individual pixels. OLED sub-pixel geometry (PenTile-like arrangements on some panels) means the effective sharpness for fine details is slightly lower than the raw PPI implies, but it's well beyond the point where this matters for the eye.

Verdict

461 PPI is wildly past perceptible density for a phone. It matters for VR near-eye optics and for colour-grading reference, but day-to-day it's the number that lets Apple render text and icons without anti-aliasing artefacts of any kind.

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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