Under American law, however, statute mile refers to the US survey mile.
In British English, statute mile may refer to the present international mile or to any other form of English mile since the 1593 Act of Parliament, which set it as a distance of 1,760 yards. When this distance needs to be distinguished from the nautical mile, the international mile may also be described as a land mile or statute mile. The present international mile is usually what is understood by the unqualified term mile. These derived from the nominal ellipsis form of mīlle passus 'mile' or mīlia passuum 'miles', the Roman mile of one thousand paces. The modern English word mile derives from Middle English myle and Old English mīl, which was cognate with all other Germanic terms for miles. While most countries replaced the mile with the kilometre when switching to the International System of Units (SI), the international mile continues to be used in some countries, such as Liberia, the United Kingdom, the United States, and a number of countries with fewer than one million inhabitants, most of which are UK or US territories or have close historical ties with the UK or US. The US Geological Survey now employs the metre for official purposes, but legacy data from its 1927 geodetic datum has meant that a separate US survey mile ( 6336 / 3937 km) continues to see some use, although it will be officially phased out in 2022. This form of the mile then spread across the British Empire, some successor states of which continue to employ the mile. The Romans divided their mile into 5,000 Roman feet but the greater importance of furlongs in Elizabethan-era England meant that the statute mile was made equivalent to 8 furlongs or 5,280 feet in 1593. With qualifiers, mile is also used to describe or translate a wide range of units derived from or roughly equivalent to the Roman mile, such as the nautical mile (now 1.852 km exactly), the Italian mile (roughly 1.852 km), and the Chinese mile (now 500 m exactly). The statute mile was standardised between the British Commonwealth and the United States by an international agreement in 1959, when it was formally redefined with respect to SI units as exactly 1,609.344 metres. The mile, sometimes the international mile or statute mile to distinguish it from other miles, is a British imperial unit and United States customary unit of distance both are based on the older English unit of length equal to 5,280 English feet, or 1,760 yards.
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