Calculate your display's pixel density (PPI) using its dimensions and pixel count. Learn about PPI and DPI definitions, and how to categorize screen resolution.
PPI Calc - DPI Calculator by AppNextDoor Labs
for displays with square pixel




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Calculate your display's pixel density (PPI) using its dimensions and pixel count. Learn about PPI and DPI definitions, and how to categorize screen resolution.

Easily calculate the Pixels Per Inch (PPI) for any screen, from phones to monitors. Input screen dimensions and diagonal size to get an instant PPI result and determine if it qualifies as a Retina Display. You can also search for device information online and save your calculations.




Calculate pixels per inch (PPI) for any screen, along with aspect ratio and screen measurements. View data in inches or centimeters. Includes presets for standard resolutions and common devices.