# Mile

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A mile is a unit of length in a number of different systems. In contemporary English, a mile most commonly refers to the statute mile of 5,280.23 feet (1,760 yards, or 1,609.344 metres), the survey mile of 5,280 survey feet (1609.3472 m) or the nautical mile of 1,852 metres (6,076.12 ft).[1] It is about a third of the old measurement, the league.

The use of statute miles as a unit of measurement is largely used in the United States and the United Kingdom. There are many other historical miles and similar units in other systems translated as miles in English, varying between one and fifteen kilometres.

There have been several abbreviations for mile (with and without trailing period): mi, ml, m, M. In the United States, the National Institute of Standards and Technology now uses and recommends mi,[2] but in everyday usage (at least in the United States and in the United Kingdom), units such as miles per hour and miles per gallon are almost always abbreviated as mph or mpg (rather than mi/h or mi/gal).

## Contents

### Statute mile

The statute mile was defined by an English Act of Parliament (hence the name) in 1592, during the reign of Queen Elizabeth I as being 1,760 yards (5,280 feet, about 1609 metres).[3] For surveying, the statute mile is divided into eight furlongs; each furlong is ten chains; each chain is four rods (also known as poles or perches); and each rod is 25 links. This makes the rod equal to 5½ yards or 16½ feet in both Imperial and U.S. usage.