mil to mm Conversion

A mil is an imperial unit of measure equal to one-thousandth of an inch (0.001 inches) or 25.4 micrometers (0.0254 millimeters). It's derived from the inch and is also known as a "thou" (or thousandth).

The mil is commonly used in manufacturing and engineering to measure the thickness of materials and manufacturing tolerances.

Although our tool provides quick and accurate conversions between mils and millimeters, it's always helpful to understand how the conversion works. This comes down to knowing the conversion factor between these two units from two different systems: the imperial and the metric.

Let's start by mentioning that is equal to one thousandth of an inch:

Knowing the conversion between inches and millimeters can help us get the mil to mm conversion factor. We can recall that is equal to :

Thus, we get that the mil to mm conversion factor is:

To convert mils to millimeters, simply multiply the measurement in mils by the conversion factor. For instance, if you want to convert , you would multiply by :

Suppose you want to convert 12 mil to mm. What do you do? Ask a friend for help? Calculate it yourself? Or use our tool? 😅 If you choose to go with the latter, here's what you need to do:

1. In the first row, enter the mil measurement, 12 mil in our case.

2. Voila! The calculator will display the result in mm. For our example, this is 0.3048 mm.

🙋 And if you need to convert to other units, just select them from the dropdown menus. It's that easy!

If you found this mil to mm conversion tool useful, then you might like to check some of our other length conversion tools:

• The length converter;
• The mil to inch conversion;
• The micron to mil conversion;
• The mil conversion;
• The angstrom to nm converter;
• The nm to m converter;
• The nm converter; and
• The micrometer converter.