Mil can refer to a number of different things.
- In English units of measurement, a mil is:
- a unit of length 1/1000 inch long, also called a thou, commonly used in the context of English units for manufacturing specifications and tolerances.
- a unit of angle: see angular mil
- a unit of surface (square mil), a square one mil on each side
- a unit of surface (circular mil), a circle one mil across
- The term 'mil' is also used colloquially to mean 'millimetre' or 'millilitre'.
- A mil in Norway and Sweden is a distance of 10 kilometres. The term originates from a pre-metric mil (in earlier times rast) of slightly over 10 km, denoting a suitable distance between rests when walking. The metric mil was officially established in Sweden on 1 January 1889. In informal and non-precise situations when geographical distances of more than a few kilometers are treated, the mil is, as a rule, used instead of the kilometre. It is also used commonly for measuring vehicle fuel consumption, litre per mil means litres consumed per 10 km [1].
- mil is sometimes used as an abbreviation for millions.
- .mil is the top level domain for the US Military
- MIL-SPEC is short for Military Specification, for equipment or materiel.
See also: mill