Mil Converter

What Is a Mil?

A mil (also called a thou) is one thousandth of an inch. It is widely used in science, technology, and manufacturing in countries that use the imperial system, especially for thin materials and coatings.

Conversion Formulas

$$1\ \text{mil} = 0.001\ \text{in}$$

$$1\ \text{mil} = 25.4\ \mu\text{m}$$

$$1\ \text{mil} = 0.0254\ \text{mm}$$

Common Examples

• 10 mil = 0.010 in = 254 $\mu$m (light guitar string gauge)
• 1 mm = 39.37 mils
• 40 mil = 1.016 mm
• 1 mil = 25.4 microns

Related Tools

For direct micron and mil conversion, use the Micron to Mil Converter. For broader length conversions, try the Micrometer Converter or Length Converter.