Calculators toolsUpdated July 2026

Free DPI / PPI Calculator

Calculate screen pixel density or print resolution, directly in your browser.

Free online tool No signup Instant results Browser-first privacy
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Screen PPI (pixels per inch)

Screen density: —

Print DPI (dots per inch)

Print resolution: —

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How to calculate screen PPI

  1. Enter the screen's pixel resolution.
  2. Enter the screen's diagonal size in inches.
  3. See the resulting pixels-per-inch density.

How to calculate print DPI

  1. Enter the image's pixel dimensions.
  2. Enter the intended print size in inches.
  3. See the resulting dots-per-inch print resolution.

Common use cases

  • Check a screen's pixel density (PPI) from its resolution and diagonal size
  • Calculate the print DPI of an image at a given print size
  • Determine if an image has enough resolution for a high-quality print

Frequently asked questions

Is this DPI/PPI calculator free?

Yes. It is completely free, with no signup and no limits.

What DPI is good for printing?

300 DPI is the standard target for high-quality photo prints; 150 DPI is often acceptable for larger prints viewed from a distance, like posters.

What's the difference between DPI and PPI?

PPI (pixels per inch) describes a digital image or screen's pixel density; DPI (dots per inch) technically describes a printer's dot density, though the terms are often used interchangeably for print resolution.