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# Mile

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 Mile Milestone, Knightsbridge, London - geograph.org.uk - 1590514.jpg The distance between Westminster and London is 1 mile Standard: English unit Quantity: length Symbol: mi Expressed in: 1 mi = SI units Lua error in package.lua at line 80: module 'Module:Gapnum' not found. imperial/US units Lua error in package.lua at line 80: module 'Module:Gapnum' not found.Lua error in package.lua at line 80: module 'Module:Gapnum' not found. nautical units 0.86898 nmi

A mile is a unit of length. There are many different kinds of mile but mile on its own usually means the statute mile.

## Statute mile

In the US and the UK the word mile usually means the statute mile.

Feet Yard Chain Furlong Mile Kilometres
5,280 1,760 80 8 1 1.609344

## Nautical mile

The nautical mile is used for sea or air travel.

The nautical mile was originally defined as one minute of arc along a line of longitude of the Earth. There are 60 minutes of arc in one degree or arc (60' = 1°). So there were 10,800 nautical miles from the North Pole to the South Pole.

Now the nautical mile is defined as 1,852 metres.

 1 nautical mile = 1,852 metres (by definition) ≈ 6,076 feet ≈ 1.151 statute miles

The speed of a ship that travels one nautical mile in one hour is called one knot

## Roman mile

The mile was first used by the Romans. It comes from the Latin phrase mille passus (plural: milia passuum). This means "one thousand paces". A pace is the distance each foot moves when taking one step.

 1 Roman mile = 1,000 Roman paces (by definition) ≈ 1,479 metres ≈ 4,852 feet

## Other miles

Different miles have been used throughout history in various parts of the world. In Norway and Sweden, for example, a mil is a unit of length which is equal to 10 kilometres.

## Idioms

Even in English-speaking countries that use the metric system (for example, Australia, Canada, and New Zealand), the mile is still used in many idioms. These include:

• A country mile is used colloquially to mean a very long distance.
• "A miss is as good as a mile" (failure by a narrow margin is no better than any other failure)
• "Give him an inch and he'll take a mile" – a corruption of "Give him an inch and he'll take an ell"[1][2] (the person in question will become greedy if shown generosity)
• "Missed by a mile" (missed by a wide margin)
• "Go a mile a minute" (move very fast)
• "Talk a mile a minute" (speak very fast)
• "To go the extra mile" (to put in extra effort)
• "Miles away" (lost in thought, or daydreaming)
• "Milestone" (an event showing a lot of progress)

## References

1. Concise Oxford English Dictionary (5th edition; 1964). Oxford University Press.
2. John Heywood (1562). The proverbs, epigrams, and miscellanies of John Heywood .... Print. for subscribers, by the Early English Drama Society. pp. 95–. Retrieved 1 December 2011.