Pixels per centimeter to Pixels per millimeter Converter

ConversionEdited by Hemant Kumar and Anjita Rai, founders · How we checkUpdated Free · No sign-up

Quick answer: To convert pixels per centimeter to pixels per millimeter, multiply by 0.1. For example, 10 px/cm is 1 px/mm. One pixel per centimeter equals 0.1 px/mm.

Use the Pixels per centimeter to Pixels per millimeter Converter

Pixels per centimeter to Pixels per millimeter formula and what each symbol means

px/mm = px/cm × 0.1

Symbols used in the formula
SymbolMeaning
px/cmPixel per centimeter
px/mmPixel per millimeter

Pixels per centimeter to Pixels per millimeter examples

1 px/cm

1 px/cm × 0.1 = 0.1 px/mm.

10 px/cm

10 px/cm × 0.1 = 1 px/mm.

100 px/cm

100 px/cm × 0.1 = 10 px/mm.

Pixels per centimeter compared with Pixels per millimeter

One px/mm is 10 times as large as one px/cm, so your number gets smaller when you convert pixels per centimeter to pixels per millimeter and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.

About pixels per centimeter and pixels per millimeter

Pixel per centimeter (px/cm): Pixels per centimetre, 2.54 ppi. Pixel per millimeter (px/mm): Pixels per millimetre, 25.4 ppi.

How to calculate Pixels per centimeter to Pixels per millimeter step by step

  1. Enter the value in px/cm (the starting unit).
  2. Multiply by 0.1, because 1 px/cm = 0.1 px/mm.
  3. The product is the value in px/mm. To go back, divide by 0.1 or multiply by 10.

Popular digital image resolution conversions

How to read your Pixels per centimeter to Pixels per millimeter result

Photo prints commonly aim for about 300 ppi, while screens usually run from about 72 to 400 ppi.

PIXELS PER CENTIMETERPIXELS PER MILLIMETER
10.1
20.2
50.5
101
202
505
10010
1,000100

Pixels per millimeter to Pixels per centimeter: quick table

PIXELS PER MILLIMETERPIXELS PER CENTIMETER
110
550
10100
25250
50500
1001,000
2502,500
5005,000

Common mistakes when calculating Pixels per centimeter to Pixels per millimeter

  • Confusing ppi (pixels per inch) with dpi (printer dots per inch).
  • Dividing when you should multiply: from px/cm to px/mm multiply by 0.1; from px/mm to px/cm divide by 0.1.

Pixels per centimeter to Pixels per millimeter FAQ

How many px/mm are in 1 px/cm?

1 px/cm equals 0.1 px/mm.

How many px/cm are in 1 px/mm?

1 px/mm equals 10 px/cm.

Is 1 px/cm = 0.1 px/mm an exact conversion?

The factor is shown rounded to 7 significant figures (0.1). The calculator above uses more digits.

What is a pixel per millimeter (px/mm)?

Pixels per millimetre, 25.4 ppi.

How can I estimate pixels per centimeter to pixels per millimeter in my head?

One px/mm is 10 times as large as one px/cm, so your number gets smaller when you convert pixels per centimeter to pixels per millimeter and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.

What is 12 px/cm in pixels per millimeter?

12 px/cm = 1.2 px/mm (since 12 × 0.1).

What is 60 px/cm in pixels per millimeter?

60 px/cm = 6 px/mm (since 60 × 0.1).

What is 250 px/cm in pixels per millimeter?

250 px/cm = 25 px/mm (since 250 × 0.1).

How many decimals should I keep when converting px/cm to px/mm?

Match the precision of your original measurement. For example, 1 px/mm rounds to 1 px/mm at 3 significant figures; keep more digits only for engineering or scientific work.

Method, review and disclaimer

Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the International System of Units (SI)