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Glossary Design & Media

Resolution and PPI

Resolution is the number of pixels in an image (such as 1920 × 1080); pixel density (PPI) is how many pixels fit in an inch of a screen or print.

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In more detail

A 6 × 4 inch print at 300 ppi needs 1800 × 1200 pixels. A 27 inch 2560 × 1440 monitor has about 109 ppi. More pixels do not improve a photo taken at low quality.

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See also

  • Glossary Aspect ratio
    Aspect ratio is the proportion of an image or screen's width to its height, written as two numbers such as 16:9.
  • Cheat sheet Photo, Print & Screen Formulas
    Screen size and pixel density, print resolution, hyperfocal distance and depth of field, and video file size from bitrate.
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