PX to MM | CSS Unit Converter

FAQ for How to convert PX to MM

To convert px to mm, you should know the size mm px.
Then, just apply the formula:
px * 0.2645833333
This formula converts the pixel value to points.
For example:
- 16px will be converted to:
  16 / 0.2645833333 = 4.233mm.

The formula is: px * 0.2645833333.

A millimeter (mm) is an absolute unit of length. 1mm is roughly 3.8 pixels, or about 25.2/640 of an inch. 1px is equivalent to 0.2645833333mm

Pixel unit is the theoretical smallest dot displayed on a computer screen.

Nowadays, the pixel unit can differ between physical resolution and logical resolution.

This difference is called the device pixel ratio (DPR):
Logical resolution = Physical resolution / Device pixel ratio

For example:
A screen with a physical resolution of 1024x768 and a DPR of 2 will have a logical resolution of:
512x384.