Pixel To Milimeter (Mm) Converter

This is a free online tool for converting a number of pixels to milimeters (mm).

You need to know the pixel density (DPI or PPI) and how many pixels you need to convert.

Step 1: What is the pixel density (In DPI or PPI)?

Pixel Density:

The default value for most printers is 300 DPI, so feel free to leave it that way.

You may provide me the total number of pixels or the resolution, whatever is easier for you.

In case you have the resolution

Step 2: What is the Width and Height? (The answer will follow the order of your input.)



In case you have the total number of pixels

Step 2: What is the total number of pixels?

Total number of pixels:


What Pixel Density should I use?

Some claim that the standard for web based design is 72 PPI or 96 PPI. I use 300 PPI for the web and printing (300 DPI).

GIMP, an image manipulation program, also shows 300 PPI as the standard for new images.

Learn more about pixel density here:


DPI to PPI Converter

PPI to DPI Converter

Typical Pixels to Milimeters Conversion Results

These are common results when you consider a 300 DPI pixel density:

Resolution:Size (In milimeters – mm):
4K (3840 X 2160)325,1 X 182,9
1080p (1920 X 1080)162,6 X 91,4
720p (1280 X 720)108,4 X 61
480p (720 X 480)61 X 40,6
8K (7680 X 4320)650,2 X 365,8
16K (15360 X 8640)1300,5 X 731,5

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