Definition:Imperial/Length/International Mile

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Definition

The (international) mile is an imperial unit of length.

\(\displaystyle \) \(\) \(\displaystyle 1\) (international) mile
\(\displaystyle \) \(=\) \(\displaystyle 8\) furlongs
\(\displaystyle \) \(=\) \(\displaystyle 80\) chains
\(\displaystyle \) \(=\) \(\displaystyle 320\) rods, poles or perches
\(\displaystyle \) \(=\) \(\displaystyle 1760\) yards
\(\displaystyle \) \(=\) \(\displaystyle 1609 \cdotp 344\) metres (exactly)


Also known as

An international mile is usually referred to just as a mile.

It is sometimes seen referred to as a statute mile, but this is an older term dating back to before the precise $1959$ definition based on the metre.


There are many other kinds of mile.


Historical Note

The international mile was a readjustment and redefinition in $1959$ of the statute mile.

The latter had been defined by statute in $1593$ under the reign of Queen Elizabeth I of England.

Previously there were a number of different and variously-defined miles used throughout not only the world, but also the British Isles.


Sources