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Paano Kalkulahin si Screen PPI

Ano ang Screen PPI?

Pixels Per Inch (PPI) — also called pixel density — measures how many pixels fit into one linear inch of a display. Higher PPI means sharper images. Apple introduced the term 'Retina Display' for screens with PPI high enough that individual pixels are not distinguishable at a typical viewing distance (generally ≥ 200–300 PPI depending on screen size and viewing distance).

Pormula

Diagonal pixel count = √(width² + height²) in pixels

Step-by-Step na Gabay

  1. 1Diagonal pixel count = √(width² + height²) in pixels
  2. 2PPI = diagonal pixel count / diagonal screen size in inches
  3. 3Dot pitch = 25.4 mm / PPI — physical size of one pixel
  4. 4Total megapixels = (width × height) / 1,000,000

Mga Nalutas na Halimbawa

Input
1920×1080 @ 24 inches
Resulta
91.8 PPI — standard 1080p monitor
Not retina — pixels visible if close up
Input
3840×2160 @ 27 inches (4K)
Resulta
163.2 PPI
Better, still not retina at arm's length
Input
2556×1179 @ 6.1 inches (iPhone 15)
Resulta
460 PPI — Retina Super Retina XDR

Mga madalas itanong

What is Screen Ppi?

Pixels Per Inch (PPI) — also called pixel density — measures how many pixels fit into one linear inch of a display. Higher PPI means sharper images

How accurate is the Screen Ppi calculator?

The calculator uses the standard published formula for screen ppi. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Screen Ppi calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Screen Ppi calculator use?

The core formula is: Diagonal pixel count = √(width² + height²) in pixels. Each step in the calculation is shown so you can verify the result manually.

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