Convert Mil to...
|1 mil in ...||... is equal to ...|
|SI units||25.4 µm
|Imperial/US unit(s)||0.001 in|
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|Astronomical Unit [AE]|
A mil is a derived unit of length in an inch-based system of units. Equal to 0.001 inches, it is normally referred to as a thousand of an inch. The plural of thou is also thou (thus one hundredth of an inch is "10 thou"), while the plural of mil is mils (thus "10 mils"). The words are shortened forms of the English and Latin words for "thousand" (mille).
The US Customary mil can be confused with the millimetre, which is the standard meaning for "mil" or "mils" (plural) in British English and European engineering circles. This can cause problems with spoken dimensions or with those who are not familiar with alternative uses of the term. One US mil is approximately 1/40th of a millimetre at 0.0254 mm, or 25.40 µm.
This article uses material from the Wikipedia article "Thousandth of an inch", which is released under the Creative Commons Attribution-Share-Alike License 3.0.