DPI and Print Size Calculator

Convert pixels to centimeters and inches, find DPI and check photo sharpness.

DPI / PPI and print size

Print size25.4 × 16.93 cm · 10 × 6.67 in

Megapixels
6
Print quality
Photo: sharp at reading distance

Convert pixels, DPI and print size

  1. Pixels to size: type width, height and DPI to get centimeters, inches and megapixels.
  2. Size to pixels: type the target size and DPI to get the exact pixels your file needs.
  3. Find DPI: type pixels plus size to check if a file prints sharp — 300 DPI is the photo standard.

DPI questions

DPI or PPI — which one matters here?

Same math: screens use PPI, printers use DPI. The tool converts pixels to physical size either way.

How many pixels for a 10 × 15 cm photo?

Use size to pixels: 10 × 15 cm at 300 DPI needs about 1181 × 1772 px. The tool shows both sides at once.

Why pair this with aspect ratio and px-rem?

Ratio locks the shape, DPI locks the size on paper or screen, and px-rem translates it to web type. They link to each other below.