Photography & Imaging

Basic

Print Resolution (PPI)

Pixels per inch when a photo is printed at a given width.

Formula

PPI = \frac{W_{px}}{W_{in}}

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Variables

PPIPixels per inch

W_{px}Image width (px)

W_{in}Print width (in)

Example

6000 px printed 20 in wide: PPI = 300

Did You Know?

300 PPI is the gold standard for photo prints; below ~150 PPI pixelation becomes visible up close.

photography print ppi

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