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Pixel to Inch Converter

Convert between pixels and inches, centimeters, millimeters or points at the DPI you choose, and check whether an image has enough pixels to print well.

Convert

Resolution
dpi

Is my image big enough to print?

px
px
in
375 DPI at 8 × 5.33 in. Sharp for close viewing.
1,080 px at 300 DPI
3.6in
  • Pixels (px)1,080
  • Inches (in)3.6
  • Centimeters (cm)9.144
  • Millimeters (mm)91.44
  • Points (pt)259.2

1 in = 2.54 cm = 25.4 mm = 72 pt. Pixels only become a physical size once a DPI is chosen.

How to use the pixel to inch converter

  1. Enter a value and choose its unit.
  2. Set the DPI: 72 or 96 for screens, 300 for print.
  3. Read every other unit in the list and copy the one you need.
  4. To check a photo, enter its pixel size and the print width. The effective DPI tells you how sharp it will be.

The formulas

  • inches = pixels ÷ DPI
  • pixels = inches × DPI
  • centimeters = inches × 2.54, millimeters = inches × 25.4, points = inches × 72

At 300 DPI, 1 inch is 300 px and 1 cm is about 118 px. At 96 DPI, the CSS reference, 1 inch is 96 CSS pixels, which is why browsers treat 1in as 96px.

DPI or PPI?

Strictly, PPI is pixels per inch in an image or screen and DPI is ink dots per inch from a printer. In everyday design use they mean the same thing: how many image pixels fit into an inch of paper.

Questions

How many pixels is an inch?

It depends on DPI: 72 px at 72 DPI, 96 px at 96 DPI (the CSS standard), 300 px at 300 DPI.

What DPI do I need for printing?

300 DPI for anything viewed up close. Large posters seen from a distance look fine at 150 DPI or even less.