Mil to Millimeter Converter (mil to mm)

How to convert mils to millimeters

1 mil is equal to 0.0254 millimeters, and 1 millimeter is equal to 39.37007874 mils. To convert, multiply by the conversion factor:

millimeters = mils × 0.0254
millimeters = mils ÷ 39.37007874

Example: convert 15 mil to mm: 15 × 0.0254 = 0.381 mm.

The mil (or thou) is one thousandth of an inch (25.4 µm). It's used for wire diameters, plastic sheet thickness and circuit board tracks.

Symbol: mil · 1 mil = 0.0000254 m · Category: Imperial & US customary

A millimeter is one thousandth of a meter. It's the standard unit in engineering drawings, manufacturing, rainfall and screen and paper sizes.

Symbol: mm · 1 mm = 0.001 m · Category: Metric (SI)

Frequently asked questions

How many millimeters are in a mil?

There are 0.0254 millimeters in 1 mil (mil).

How many mils are in a millimeter?

1 millimeter (mm) equals 39.37007874 mils.

How do I convert mils to millimeters?

Multiply the length in mils by 0.0254. For example, 15 mil × 0.0254 = 0.381 mm.

How do I convert millimeters to mils?

Divide the length in millimeters by 0.0254, or multiply it by 39.37007874. You can also use the Millimeter to Mil converter.