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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 United States customary units form a system of measurement units commonly used in the United States and U.S. territories since being standardized and adopted in 1832. The United States customary system (USCS or USC) developed from English uni ...
of distance; both are based on the older
English unit English units are the units of measurement used in England up to 1826 (when they were replaced by Imperial units), which evolved as a combination of the Anglo-Saxon and Roman systems of units. Various standards have applied to English units at d ...
of length equal to 5,280
English feet The foot ( feet), standard symbol: ft, is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, , is a customarily used alternative symbol. Since the International Yard and Po ...
, or 1,760
yards The yard (symbol: yd) is an English unit of length in both the British imperial and US customary systems of measurement equalling 3  feet or 36 inches. Since 1959 it has been by international agreement standardized as 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 . With qualifiers, ''mile'' is also used to describe or translate a wide range of units derived from or roughly equivalent to the
Roman mile 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 Engli ...
, such as the nautical mile (now exactly), the
Italian mile 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 ...
(roughly ), and the Chinese mile (now exactly). The Romans divided their mile into 5,000
Roman feet The ancient Roman units of measurement were primarily founded on the Hellenic system, which in turn was influenced by the Egyptian system and the Mesopotamian system. The Roman units were comparatively consistent and well documented. Length ...
but the greater importance of furlongs in Elizabethan-era England meant that the
statute mile 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 Engli ...
was made equivalent to or in 1593. This form of the mile then spread across the
British Empire The British Empire was composed of the dominions, colonies, protectorates, mandates, and other territories ruled or administered by the United Kingdom and its predecessor states. It began with the overseas possessions and trading posts e ...
, some successor states of which continue to employ the mile. The
US Geological Survey The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and ...
now employs the metre for official purposes, but legacy data from its 1927 geodetic datum has meant that a separate US survey mile continues to see some use, although it was officially phased out in 2022. 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.


Name

The modern English word ''mile'' derives from
Middle English Middle English (abbreviated to ME) is a form of the English language that was spoken after the Norman conquest of 1066, until the late 15th century. The English language underwent distinct variations and developments following the Old English ...
' and
Old English Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlers in the mid-5th c ...
', which was cognate with all other Germanic terms for ''miles''. These derived from the nominal ellipsis form of ' 'mile' or ' 'miles', the Roman mile of one thousand paces. The present
international mile 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 ...
is usually what is understood by the unqualified term ''mile''. 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. In
British English British English (BrE, en-GB, or BE) is, according to Lexico, Oxford Dictionaries, "English language, English as used in Great Britain, as distinct from that used elsewhere". More narrowly, it can refer specifically to the English language in ...
, ''statute mile'' may refer to the present international mile or to any other form of
English mile 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 ...
since the 1593 Act of Parliament, which set it as a distance of . Under
American law The law of the United States comprises many levels of codified and uncodified forms of law, of which the most important is the nation's Constitution, which prescribes the foundation of the federal government of the United States, as well as v ...
, however, ''statute mile'' refers to the US survey mile. Foreign and historical units translated into English as ''miles'' usually employ a qualifier to describe the kind of mile being used but this may be omitted if it is obvious from the context, such as a discussion of the 2nd-century Antonine Itinerary describing its distances in terms of ''miles'' rather than ''Roman miles''.


Abbreviation

The mile has been variously abbreviated in English—with and without a trailing period—as "mi", "M", "ml", and "m". The American
National Institute of Standards and Technology The National Institute of Standards and Technology (NIST) is an agency of the United States Department of Commerce whose mission is to promote American innovation and industrial competitiveness. NIST's activities are organized into physical s ...
now uses and recommends "mi" to avoid confusion with the SI metre (m) and millilitre (ml). However, derived units such as
miles per hour Miles per hour (mph, m.p.h., MPH, or mi/h) is a British imperial and United States customary unit of speed expressing the number of miles travelled in one hour. It is used in the United Kingdom, the United States, and a number of smaller cou ...
or
miles per gallon The fuel economy of an automobile relates distance traveled by a vehicle and the amount of fuel consumed. Consumption can be expressed in terms of volume of fuel to travel a distance, or the distance traveled per unit volume of fuel consumed. S ...
continue to be abbreviated as "mph" and "mpg" rather than "mi/h" and "mi/gal". In the United Kingdom,
road signs Traffic signs or road signs are signs erected at the side of or above roads to give instructions or provide information to road users. The earliest signs were simple wooden or stone milestones. Later, signs with directional arms were introduce ...
use "m" as the abbreviation for mile though height and width restrictions also use "m" as the symbol for the metre, which may be displayed alongside feet and inches. The
BBC #REDIRECT BBC #REDIRECT BBC Here i going to introduce about the best teacher of my life b BALAJI sir. He is the precious gift that I got befor 2yrs . How has helped and thought all the concept and made my success in the 10th board exam. ...
...
style holds that "there is no acceptable abbreviation for 'miles'" and so it should be spelled out when used in describing areas.


Historical


Roman

The
Roman Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of ancient Rome *'' Epistle to the Romans'', shortened to ''Romans'', a lette ...
mile (',  "thousand paces";  m.p.; also ' and ') consisted of a thousand paces as measured by every other step—as in the total distance of the left foot hitting the ground 1,000 times. The ancient Romans, marching their armies through uncharted territory, would often push a carved stick in the ground after each 1,000 paces. Well-fed and harshly driven
Roman legion The Roman legion ( la, legiō, ) was the largest military unit of the Roman army, composed of 5,200 infantry and 300 equites (cavalry) in the period of the Roman Republic (509 BC–27 BC) and of 5,600 infantry and 200 auxilia in the period o ...
aries in good weather thus created longer miles. The distance was indirectly standardised by
Agrippa Agrippa may refer to: People Antiquity * Agrippa (mythology), semi-mythological king of Alba Longa * Agrippa (astronomer), Greek astronomer from the late 1st century * Agrippa the Skeptic, Skeptic philosopher at the end of the 1st century * Agri ...
's establishment of a standard
Roman foot Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of ancient Rome *'' Epistle to the Romans'', shortened to ''Romans'', a lette ...
(Agrippa's own) in 29 BC, and the definition of a pace as 5 feet. An Imperial Roman mile thus denoted 5,000 
Roman feet The ancient Roman units of measurement were primarily founded on the Hellenic system, which in turn was influenced by the Egyptian system and the Mesopotamian system. The Roman units were comparatively consistent and well documented. Length ...
. Surveyors and specialised equipment such as the decempeda and
dioptra A dioptra (sometimes also named dioptre or diopter, from el, διόπτρα) is a classical astronomical and surveying instrument, dating from the 3rd century BC. The dioptra was a sighting tube or, alternatively, a rod with a sight at ...
then spread its use. In modern times, Agrippa's Imperial Roman mile was empirically estimated to have been about in length, slightly less than the of the modern international mile. In Hellenic areas of the Empire, the Roman mile ( grc-gre, μίλιον, ''mílion'') was used beside the native
Greek units Ancient Greek units of measurement varied according to location and epoch. Systems of ancient weights and measures evolved as needs changed; Solon and other lawgivers also reformed them ''en bloc''. Some units of measurement were found to be conveni ...
as equivalent to 8
stadia Stadia may refer to: * One of the plurals of stadium, along with "stadiums" * The plural of stadion, an ancient Greek unit of distance, which equals to 600 Greek feet (''podes''). * Stadia (Caria), a town of ancient Caria, now in Turkey * Stadi ...
of 600
Greek feet The pous ( podes; grc-gre, ποῦς, ''poûs'') or Greek foot ( feet) was a Greek unit of length. It had various subdivisions whose lengths varied by place and over time. 100 podes made up one plethron, 600 podes made up a stade (the ...
. The ''mílion'' continued to be used as a Byzantine unit and was also used as the name of the
zero mile marker In many countries, kilometre zero (also written ''km 0'') or similar terms in other languages (also known as zero mile marker, zero milepost, control stations or control points) denote a particular location (usually in the nation's capital cit ...
for the
Byzantine Empire The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...
, the
Milion The Milion ( grc-gre, Μίλιον or , ''Míllion''; tr, Milyon taşı) was a monument erected in the early 4th century AD in Constantinople (modern-day Istanbul, Turkey). It was the Byzantine zero-mile marker, the starting-place for the measu ...
, located at the head of the Mese near
Hagia Sophia Hagia Sophia ( 'Holy Wisdom'; ; ; ), officially the Hagia Sophia Grand Mosque ( tr, Ayasofya-i Kebir Cami-i Şerifi), is a mosque and major cultural and historical site in Istanbul, Turkey. The cathedral was originally built as a Greek Ortho ...
. The Roman mile also spread throughout Europe, with its local variations giving rise to the different units below. Also arising from the Roman mile is the
milestone A milestone is a numbered marker placed on a route such as a road, railway line, canal or boundary. They can indicate the distance to towns, cities, and other places or landmarks; or they can give their position on the route relative to so ...
. All roads radiated out from the Roman Forum throughout the Empire – 50,000 (Roman) miles of stone-paved roads. At every mile was placed a shaped stone. Originally these were
obelisks An obelisk (; from grc, ὀβελίσκος ; diminutive of ''obelos'', " spit, nail, pointed pillar") is a tall, four-sided, narrow tapering monument which ends in a pyramid-like shape or pyramidion at the top. Originally constructed by An ...
made from granite, marble, or whatever local stone was available. On these was carved a
Roman numeral Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, ea ...
, indicating the number of miles from the centre of Rome – the Forum. Hence, one always knew how far one was from Rome.


Italian

The
Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Ita ...
mile (',  ') was traditionally considered a direct continuation of the Roman mile, equal to 1000 paces, although its actual value over time or between regions could vary greatly. It was often used in international contexts from the Middle Ages into the 17th century1
 and is thus also known as the "geographical mile", although the geographical mile is now a separate standard unit.


Arabic

The
Arabic mile The Arab, Arabic, or Arabian mile ( ar, الميل, ''al-mīl'') was a historical Arabic unit of length. Its precise length is disputed, lying between 1.8 and 2.0 km. It was used by medieval Arab geographers and astronomers. The predecessor o ...
(, ''al-mīl'') was not the common
Arabic unit The Ancient Arabic unit of measurements were a system of using units to associate with physical quantities. Arabic symbols are used to represent the values. The measurements were based on body measurements and common natural items. The length of for ...
of length; instead,
Arabs The Arabs (singular: Arab; singular ar, عَرَبِيٌّ, DIN 31635: , , plural ar, عَرَب, DIN 31635: , Arabic pronunciation: ), also known as the Arab people, are an ethnic group mainly inhabiting the Arab world in Western Asia, ...
and
Persians The Persians are an Iranian ethnic group who comprise over half of the population of Iran. They share a common cultural system and are native speakers of the Persian language as well as of the languages that are closely related to Persian. ...
traditionally used the longer
parasang The parasang is a historical Iranian unit of walking distance, the length of which varied according to terrain and speed of travel. The European equivalent is the league. In modern terms the distance is about 3 or 3½ miles (4.8 or 5.6 km). His ...
or "Arabic
league League or The League may refer to: Arts and entertainment * ''Leagues'' (band), an American rock band * ''The League'', an American sitcom broadcast on FX and FXX about fantasy football Sports * Sports league * Rugby league, full contact footba ...
". The Arabic mile was, however, used by
medieval geographers In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire an ...
and scientists and constituted a kind of precursor to the
nautical Seamanship is the art, knowledge and competence of operating a ship, boat or other craft on water. The'' Oxford Dictionary'' states that seamanship is "The skill, techniques, or practice of handling a ship or boat at sea." It involves topics ...
or geographical mile. It extended the Roman mile to fit an
astronomical Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxi ...
approximation of 1
arcminute A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol , is a unit of angular measurement equal to of one degree. Since one degree is of a turn (or complete rotation), one minute of arc is of a turn. The n ...
of
latitude In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north pol ...
measured directly north-and-south along a
meridian Meridian or a meridian line (from Latin ''meridies'' via Old French ''meridiane'', meaning “midday”) may refer to Science * Meridian (astronomy), imaginary circle in a plane perpendicular to the planes of the celestial equator and horizon * ...
. Although the precise value of the approximation remains disputed, it was somewhere between 1.8 and 2.0 km.


English

The "old
English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...
mile" of the
medieval In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire ...
and early modern periods varied but seems to have measured about 1.3  international miles (2.1 km). The old English mile varied over time and location within England. The old English mile has also been defined as 79,200 or 79,320 inches (1.25 or 1.2519 statute miles). The English long continued the Roman computations of the mile as 5000 feet, 1000
paces A pace is a unit of length consisting either of one normal walking step (approximately ), or of a double step, returning to the same foot (approximately ). The normal pace length decreases with age and some health conditions. The word "pace" is al ...
, or 8 longer divisions, which they equated with their "
furrow A plough or plow ( US; both ) is a farm tool for loosening or turning the soil before sowing seed or planting. Ploughs were traditionally drawn by oxen and horses, but in modern farms are drawn by tractors. A plough may have a wooden, iron or ...
's length" or
furlong A furlong is a measure of distance in imperial units and United States customary units equal to one eighth of a mile, equivalent to 660 feet, 220 yards, 40 rods, 10 chains or approximately 201 metres. It is now mostly confined to use in hor ...
. The origins of English units are "extremely vague and uncertain", but seem to have been a combination of the Roman system with native
British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...
and Germanic systems both derived from multiples of the barleycorn. Probably by the reign of Edgar in the 10th century, the nominal prototype physical standard of English length was an arm-length iron bar (a yardstick) held by the
king King is the title given to a male monarch in a variety of contexts. The female equivalent is queen, which title is also given to the consort of a king. *In the context of prehistory, antiquity and contemporary indigenous peoples, the tit ...
at Winchester; the foot was then one-third of its length. Henry I was said to have made a new standard in 1101 based on his own arm. Following the issuance of Magna Carta, the barons of
Parliament In modern politics, and history, a parliament is a legislative body of government. Generally, a modern parliament has three functions: representing the electorate, making laws, and overseeing the government via hearings and inquiries. Th ...
directed
John John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Secon ...
and his son to keep the
king King is the title given to a male monarch in a variety of contexts. The female equivalent is queen, which title is also given to the consort of a king. *In the context of prehistory, antiquity and contemporary indigenous peoples, the tit ...
's standard measure (') and
weight In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar qua ...
at the
Exchequer In the civil service of the United Kingdom, His Majesty’s Exchequer, or just the Exchequer, is the accounting process of central government and the government's '' current account'' (i.e., money held from taxation and other government revenu ...
, which thereafter verified local standards until its abolition in the 19th century. New
brass Brass is an alloy of copper (Cu) and zinc (Zn), in proportions which can be varied to achieve different mechanical, electrical, and chemical properties. It is a substitutional alloy: atoms of the two constituents may replace each other wit ...
standards are known to have been constructed under Henry VII and Elizabeth I. Arnold's ''Customs of London'' recorded a mile shorter than previous ones, coming to 0.947 international miles (5000 feet) or 1.524 km.


Statute

The English statute mile was established by a
Weights and Measures A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. Any other quantity of that kind can be expressed as a multi ...
Act of Parliament Acts of Parliament, sometimes referred to as primary legislation, are texts of law passed by the Legislature, legislative body of a jurisdiction (often a parliament or council). In most countries with a parliamentary system of government, acts of ...
in 1593 during the reign of Queen Elizabeth I. The act on the
Composition of Yards and Perches The Composition of Yards and Perches ( la, Compositio Ulnarum et Perticarum) or the Statute of Ells and Perches was a medieval English statute defining the length of the barleycorn, inch, foot, yard, and perch, as well as the area of the acre. It ...
had shortened the length of the foot and its associated measures, causing the two methods of determining the mile to diverge. Owing to the importance of the surveyor's rod in deeds and surveying undertaken under Henry VIII, decreasing the length of the rod by would have amounted to a significant
tax A tax is a compulsory financial charge or some other type of levy imposed on a taxpayer (an individual or legal entity) by a governmental organization in order to fund government spending and various public expenditures (regional, local, or n ...
increase. Parliament instead opted to maintain the mile of 8
furlongs A furlong is a measure of distance in imperial units and United States customary units equal to one eighth of a mile, equivalent to 660 feet, 220 yards, 40 rods, 10 chains or approximately 201 metres. It is now mostly confined to use in ho ...
(which were derived from the rod) and to increase the number of feet per mile from the old Roman value. The applicable passage of the statute reads: "A Mile shall contain eight Furlongs, every Furlong forty Poles, and every Pole shall contain sixteen Foot and half." The statute mile therefore contained 5,280 feet or 1,760 yards. The distance was not uniformly adopted.
Robert Morden Robert Morden (c. 1650 – 1703) was an English bookseller, publisher, and mapmaker, globemaker and engraver. He was among the first successful commercial map makers. Between about 1675 and his death in 1703, he was based under the sign of the ...
had multiple scales on his 17th-century maps which included continuing local values: his map of
Hampshire Hampshire (, ; abbreviated to Hants) is a ceremonial and non-metropolitan county in western South East England on the coast of the English Channel. Home to two major English cities on its south coast, Southampton and Portsmouth, Hampshire ...
, for example, bore two different "miles" with a ratio of and his map of
Dorset Dorset ( ; archaically: Dorsetshire , ) is a county in South West England on the English Channel coast. The ceremonial county comprises the unitary authority areas of Bournemouth, Christchurch and Poole and Dorset. Covering an area of , ...
had three scales with a ratio of . In both cases, the traditional local units remained longer than the statute mile. The English statute mile was superseded in 1959 by the
international mile 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 ...
by international agreement.


Welsh

The
Welsh Welsh may refer to: Related to Wales * Welsh, referring or related to Wales * Welsh language, a Brittonic Celtic language spoken in Wales * Welsh people People * Welsh (surname) * Sometimes used as a synonym for the ancient Britons (Celtic peop ...
 mile (' or ') was 3  miles and 1,470 yards long (6.17 km). It comprised 9,000  paces ('), each of 3 
Welsh feet Welsh units of measurement are those in use in Wales between the Sub-Roman period (prior to which the Britons used Roman units) and the 13th-century Edwardian conquest (after which English units were imposed). Modern Wales no longer employs th ...
(') of 9 inches ('). (The Welsh inch is usually reckoned as equivalent to the English inch.) Along with other
Welsh units Welsh units of measurement are those in use in Wales between the Sub-Roman period (prior to which the Britons used Roman units) and the 13th-century Edwardian conquest (after which English units were imposed). Modern Wales no longer employs the ...
, it was said to have been codified under Dyfnwal the Bald and Silent and retained unchanged by
Hywel the Good Hywel Dda, sometimes anglicised as Howel the Good, or Hywel ap Cadell (died 949/950) was a king of Deheubarth who eventually came to rule most of Wales. He became the sole king of Seisyllwg in 920 and shortly thereafter established Deheubarth ...
. Along with other Welsh units, it was discontinued following the
conquest Conquest is the act of military subjugation of an enemy by force of arms. Military history provides many examples of conquest: the Roman conquest of Britain, the Mauryan conquest of Afghanistan and of vast areas of the Indian subcontinent, t ...
of
Wales Wales ( cy, Cymru ) is a country that is part of the United Kingdom. It is bordered by England to the east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in ...
by the English under Edward I in the 13th century.


Scots

The Scots mile was longer than the English mile, as mentioned by
Robert Burns Robert Burns (25 January 175921 July 1796), also known familiarly as Rabbie Burns, was a Scottish poet and lyricist. He is widely regarded as the national poet of Scotland and is celebrated worldwide. He is the best known of the poets who hav ...
in the first verse of his poem " Tam o' Shanter". It comprised 8 (Scots) furlongs divided into 320 
fall Autumn, also known as fall in American English and Canadian English, is one of the four temperate seasons on Earth. Outside the tropics, autumn marks the transition from summer to winter, in September (Northern Hemisphere) or March ( Southe ...
s or faws (Scots rods). It varied from place to place but the most accepted equivalencies are 1,976  Imperial yards (1.123
statute mile 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 Engli ...
s or 1.81 km). It was legally abolished three times: first by a 1685 act of the Scottish Parliament,Act for a standard of miles
(16 June 1685). ''APS'' viii: 494, c.59. '' RPS'' 1685/4/83. again by the 1707
Treaty of Union The Treaty of Union is the name usually now given to the treaty which led to the creation of the new state of Great Britain, stating that the Kingdom of England (which already included Wales) and the Kingdom of Scotland were to be "United i ...
with England, and finally by the
Weights and Measures Act 1824 Weights and measures acts are acts of the British Parliament determining the regulation of weights and measures. It also refers to similar royal and parliamentary acts of the Kingdoms of England and Scotland and the medieval Welsh states. ...
. It had continued in use as a customary unit through the 18th century but had become obsolete by its final abolition.


Irish

The Irish mile (' or ') measured 2,240 yards: approximately 1.27 statute miles or 2.048 kilometres. It was used in Ireland from the 16th century plantations until the 19th century, with residual use into the 20th century. The units were based on " English measure" but used a linear perch measuring as opposed to the English rod of .


Dutch

The Dutch mile () has had different definitions throughout history. One of the older definitions was 5,600 ells. But the length of an ell was not standardised, so that the length of a mile could range between 3,280 m and 4,280 m. The Dutch mile also has had historical definitions of one hour's walking (), which meant around 5 km, or 20,000 Amsterdam or Rhineland feet (respectively 5,660 m or 6,280 m). Besides the common Dutch mile, there is also the geographical mile. 15 geographical Dutch miles equal one degree of
longitude Longitude (, ) is a geographic coordinate that specifies the east– west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek lette ...
on the equator. Its value changed as the circumference of the earth was estimated to a better precision. But at the time of usage, it was around 7,157 m. The metric system was introduced in the Netherlands in 1816, and the metric mile became a synonym for the kilometre, being exactly 1,000 m. Since 1870, the term was replaced by the equivalent . Today, the word is no longer used, except as part of certain proverbs and
compound Compound may refer to: Architecture and built environments * Compound (enclosure), a cluster of buildings having a shared purpose, usually inside a fence or wall ** Compound (fortification), a version of the above fortified with defensive struc ...
terms like ("miles away").


German

The German mile () was 24,000 German feet. The standardised Austrian mile used in southern Germany and the
Austrian Empire The Austrian Empire (german: link=no, Kaiserthum Oesterreich, modern spelling , ) was a Central-Eastern European multinational great power from 1804 to 1867, created by proclamation out of the realms of the Habsburgs. During its existence ...
was 7.586 km; the Prussian mile used in northern Germany was 7.5325 km. Following its standardisation by Ole Rømer in the late 17th century, the Danish mile (') was precisely equal to the Prussian mile and likewise divided into 24,000 feet. These were sometimes treated as equivalent to 7.5 km. Earlier values had varied: the , for instance, had been 11.13 km. The Germans also used a longer version of the geographical mile.


Breslau

The Breslau mile, used in Breslau, and from 1630 officially in all of
Silesia Silesia (, also , ) is a historical region of Central Europe that lies mostly within Poland, with small parts in the Czech Republic and Germany. Its area is approximately , and the population is estimated at around 8,000,000. Silesia is split ...
, equal to 11,250 ells, or about 6,700 meters. The mile equaled the distance from the Piaskowa Gate all the way to Psie Pole (
Hundsfeld Psie Pole () ( polish: ''Dog Field'') is one of the five administrative districts of Wrocław, Poland. Before 1928, it was an independent city. Its functions were largely taken over on 8 March 1990 by the Municipal Office of the newly establishe ...
). By rolling a circle with a radius of 5 ells through Piaskowa Island, Ostrów Tumski and suburban tracts, passing eight bridges on the way, the standard Breslau mile was determined.


Saxon

The Saxon post mile (' or ', introduced on occasion of a survey of the Saxon roads in the 1700s, corresponded to 2,000 Dresden rods, equivalent to 9.062 kilometres.


Hungarian

The Hungarian mile (' or ') varied from 8.3790 km to 8.9374 km before being standardised as 8.3536 km.


Portuguese

The Portuguese mile (') used in Portugal and Brazil was 2.0873 km prior to metrication.


Russian

The
Russian Russian(s) refers to anything related to Russia, including: *Russians (, ''russkiye''), an ethnic group of the East Slavic peoples, primarily living in Russia and neighboring countries *Rossiyane (), Russian language term for all citizens and peo ...
mile ( or , ) was 7.468 km, divided into 7
verst A verst (russian: верста, ) is an obsolete Russian unit of length defined as 500 sazhen. This makes a verst equal to . Plurals and variants In the English language, ''verst'' is singular with the normal plural ''versts''. In Russian, the no ...
s.


Croatian

The Croatian mile ('), first devised by the Jesuit Stjepan Glavač on a 1673 map, is the length of an arc of the equator subtended by ° or 11.13 km exactly. The previous Croatian mile, now known as the " ban mile" ('), had been the Austrian mile given above.


Ottoman

The Ottoman mile was 1,894.35 m (1.17709 mi), which was equal to 5,000 Ottoman foot. After 1933, the Ottoman mile was replaced with the modern Turkish mile (1,853.181 m).


International

The international mile is precisely equal to (or  km as a fraction). It was established as part of the 1959
international yard and pound The international yard and pound are two units of measurement that were the subject of an agreement among representatives of six nations signed on 1 July 1959: the United States, United Kingdom, Canada, Australia, New Zealand, and South Africa. T ...
agreement reached by the United States, the United Kingdom, Canada, Australia, New Zealand, and the
Union of South Africa The Union of South Africa ( nl, Unie van Zuid-Afrika; af, Unie van Suid-Afrika; ) was the historical predecessor to the present-day Republic of South Africa. It came into existence on 31 May 1910 with the unification of the Cape, Natal, Tran ...
, which resolved small but measurable differences that had arisen from separate physical standards each country had maintained for the yard. As with the earlier
statute mile 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 Engli ...
, it continues to comprise 1,760 yards or 5,280 feet. The old Imperial value of the yard was used in converting measurements to metric values in India in a 1976 Act of the Indian Parliament. However, the current National Topographic Database of the Survey of India is based on the metric
WGS-84 The World Geodetic System (WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS. The current version, WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also descr ...
datum In the pursuit of knowledge, data (; ) is a collection of discrete values that convey information, describing quantity, quality, fact, statistics, other basic units of meaning, or simply sequences of symbols that may be further interpreted. ...
, which is also used by the
Global Positioning System The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite sy ...
. The difference from the previous standards was 2  ppm, or about 3.2 millimetres ( inch) per mile. The U.S. standard was slightly longer and the old Imperial standards had been slightly shorter than the international mile. When the international mile was introduced in English-speaking countries, the basic
geodetic datum A geodetic datum or geodetic system (also: geodetic reference datum, geodetic reference system, or geodetic reference frame) is a global datum reference or reference frame for precisely representing the position of locations on Earth or other pla ...
in America was the North American Datum of 1927 (NAD27). This had been constructed by triangulation based on the definition of the foot in the
Mendenhall Order The Mendenhall Order marked a decision to change the fundamental standards of length and mass of the United States from the customary standards based on those of England to metric standards. It was issued on April 5, 1893, by Thomas Corwin Mend ...
of 1893, with 1 foot =  (≈0.304800609601) metres and the definition was retained for data derived from NAD27, but renamed the ''U.S. survey foot'' to distinguish it from the international foot.When reading the document it helps to bear in mind that 999,998 = 3,937 × 254. Thus a survey mile =  × 5280 (≈1609.347218694) metres. An international mile = 1609.344 / ( × 5280) (=0.999998) survey miles. The exact length of the land mile varied slightly among English-speaking countries until the
international yard and pound The international yard and pound are two units of measurement that were the subject of an agreement among representatives of six nations signed on 1 July 1959: the United States, United Kingdom, Canada, Australia, New Zealand, and South Africa. T ...
agreement in 1959 established the yard as exactly 0.9144 metres, giving a mile of exactly 1,609.344 metres. The U.S. adopted this international mile for most purposes, but retained the pre-1959 mile for some land-survey data, terming it the ''U. S. survey mile''. In the United States, ''statute mile'' normally refers to the survey mile, about 3.219 mm ( inch) longer than the international mile (the international mile is exactly 0.0002% less than the U.S. survey mile). While most countries abandoned the mile when switching to the
metric system The metric system is a system of measurement that succeeded the decimalised system based on the metre that had been introduced in France in the 1790s. The historical development of these systems culminated in the definition of the Interna ...
, the international mile continues to be used in some countries, such as Liberia,
Myanmar Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...
, the United Kingdom and the United States. It is also used in a number of territories with less than a million inhabitants, most of which are U.K. or U.S. territories, or have close historical ties with the U.K. or U.S.: American Samoa, Bahamas, Belize, British Virgin Islands, Cayman Islands, Dominica, Falkland Islands, Grenada, Guam, The N. Mariana Islands, Samoa, St. Lucia, St. Vincent & The Grenadines, St. Helena, St. Kitts & Nevis, the Turks & Caicos Islands, and the U.S. Virgin Islands. The mile is even encountered in Canada, though this is predominantly in rail transport and horse racing, as the roadways have been metricated since 1977. The Republic of Ireland gradually replaced miles with kilometres, including in speed measurements; the process was completed in 2005.


U.S. survey

The U.S. survey mile is 5,280 U.S. survey feet, or 1,609.347 metres and 0.30480061 metres respectively. Both are very slightly longer than the
international mile 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 ...
and
international foot The foot ( feet), standard symbol: ft, is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, , is a customarily used alternative symbol. Since the International Yard and P ...
. In the United States, the term ''statute mile'' formally refers to the survey mile, but for most purposes, the difference of less than between the survey mile and the international mile (1609.344 metres exactly) is insignificant—one international mile is U.S. survey miles—so ''statute mile'' can be used for either. But in some cases, such as in the U.S. State Plane Coordinate Systems (SPCSs), which can stretch over hundreds of miles, the accumulated difference can be significant, so it is important to note that the reference is to the U.S. survey mile. The United States redefined its yard in 1893, and this resulted in U.S. and Imperial measures of distance having very slightly different lengths. The North American Datum of 1983 (NAD83), which replaced the NAD27, is defined in metres. State Plane Coordinate Systems were then updated, but the
National Geodetic Survey The National Geodetic Survey (NGS) is a United States federal agency that defines and manages a national coordinate system, providing the foundation for transportation and communication; mapping and charting; and a large number of applications ...
left individual states to decide which (if any) definition of the foot they would use. All State Plane Coordinate Systems are defined in metres, and 42 of the 50 states only use the metre-based State Plane Coordinate Systems. However, eight states also have State Plane Coordinate Systems defined in feet, seven of them in U.S. survey feet and one in international feet. State legislation in the U.S. is important for determining which conversion factor from the metric datum is to be used for land surveying and real estate transactions, even though the difference (2  ppm) is hardly significant, given the precision of normal surveying measurements over short distances (usually much less than a mile). Twenty-four states have legislated that surveying measures be based on the U.S. survey foot, eight have legislated that they be based on the international foot, and eighteen have not specified which conversion factor to use. SPCS 83 legislation refers to state legislation that has been passed or updated using the newer 1983 NAD data. Most states have done so. Two states (AK, MO) and two jurisdictions (GU, PR) do not specify which foot to use. Additionally, two states (AL, HI) and four jurisdictions (DC, VI, AS, MP) do not have SPCS 83 legislation. In October 2019,
U.S. National Geodetic Survey The National Geodetic Survey (NGS) is a United States federal agency that defines and manages a national coordinate system, providing the foundation for transportation and communication; mapping and charting; and a large number of applications ...
and
National Institute of Standards and Technology The National Institute of Standards and Technology (NIST) is an agency of the United States Department of Commerce whose mission is to promote American innovation and industrial competitiveness. NIST's activities are organized into physical s ...
announced their joint intent to retire the U.S. survey foot and U.S. survey mile, as permitted by their 1959 decision, with effect on January 1, 2023.


Nautical

The ''nautical mile'' was originally defined as one minute of arc along a
meridian Meridian or a meridian line (from Latin ''meridies'' via Old French ''meridiane'', meaning “midday”) may refer to Science * Meridian (astronomy), imaginary circle in a plane perpendicular to the planes of the celestial equator and horizon * ...
of the Earth. Navigators use dividers to step off the distance between two points on the navigational chart, then place the open dividers against the minutes-of-latitude scale at the edge of the chart, and read off the distance in nautical miles. The Earth is not perfectly spherical but an oblate spheroid, so the length of a minute of latitude increases by 1% from the equator to the poles. Using the WGS84 ellipsoid, the commonly accepted Earth model for many purposes today, one minute of latitude at the WGS84 equator is 6,046 feet and at the poles is 6,107.5 feet. The average is about 6,076 feet (about 1,852 metres or 1.15 statute miles). In the United States, the nautical mile was defined in the 19th century as 6,080.2 feet (1,853.249 m), whereas in the United Kingdom, the ''Admiralty nautical mile'' was defined as 6,080 feet (1,853.184 m) and was about one minute of latitude in the latitudes of the south of the UK. Other nations had different definitions of the nautical mile, but it is now internationally defined to be exactly .


Related units

The nautical mile per hour is known as the
knot A knot is an intentional complication in cordage which may be practical or decorative, or both. Practical knots are classified by function, including hitches, bends, loop knots, and splices: a ''hitch'' fastens a rope to another object; a ' ...
. Nautical miles and knots are almost universally used for aeronautical and maritime navigation, because of their relationship with degrees and minutes of latitude and the convenience of using the latitude scale on a map for distance measuring. The
data mile In radar-related subjects and in JTIDS, a data mile is a unit of distance equal to 6000 feet (1.8288 kilometres or 0.987 nautical miles). An international mile is exactly 0.88 of a data mile. The speed of light is 983571056 ft/s, or about one f ...
is used in
radar Radar is a detection system that uses radio waves to determine the distance ('' ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, we ...
-related subjects and is equal to 6,000 feet (1.8288 kilometres). The
radar mile Radar mile or radar nautical mile is an auxiliary constant for converting a (delay) time to the corresponding scale distance on the radar display. Radar timing is usually expressed in microseconds. To relate radar timing to distances traveled by ra ...
is a unit of time (in the same way that the light year is a unit of distance), equal to the time required for a radar pulse to travel a distance of two miles (one mile each way). Thus, the radar statute mile is 10.8 μs and the radar nautical mile is 12.4 μs.


Geographical

The geographical mile is based upon the length of a
meridian Meridian or a meridian line (from Latin ''meridies'' via Old French ''meridiane'', meaning “midday”) may refer to Science * Meridian (astronomy), imaginary circle in a plane perpendicular to the planes of the celestial equator and horizon * ...
of
latitude In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north pol ...
. The German geographical mile () was previously ° of latitude (7.4127 km).


Grid system

Cities in the continental United States often have streets laid out by miles. Detroit, Indianapolis,
Chicago (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name ...
,
Phoenix Phoenix most often refers to: * Phoenix (mythology), a legendary bird from ancient Greek folklore * Phoenix, Arizona, a city in the United States Phoenix may also refer to: Mythology Greek mythological figures * Phoenix (son of Amyntor), a ...
,
Philadelphia Philadelphia, often called Philly, is the List of municipalities in Pennsylvania#Municipalities, largest city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, the List of United States cities by population, sixth-largest city i ...
,
Las Vegas Las Vegas (; Spanish for "The Meadows"), often known simply as Vegas, is the 25th-most populous city in the United States, the most populous city in the state of Nevada, and the county seat of Clark County. The city anchors the Las Vegas ...
,
Los Angeles Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the List of municipalities in California, largest city in the U.S. state, state of California and the List of United States cities by population, sec ...
, and
Miami Miami ( ), officially the City of Miami, known as "the 305", "The Magic City", and "Gateway to the Americas", is a coastal metropolis and the county seat of Miami-Dade County in South Florida, United States. With a population of 442,241 at ...
, are several examples. Typically the largest streets are about a mile apart, with others at smaller intervals. In the
Manhattan Manhattan (), known regionally as the City, is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is also coextensive with New York County, one of the original counties of the U.S. state ...
borough of New York City "streets" are close to 20 per mile, while the major numbered "avenues" are about six per mile. (Centerline to centerline, 42nd Street to 22nd Street is supposed to be 5,250 feet while 42nd Street to 62nd Street is supposed to be 5,276 ft 8 in.)


Metric

The informal term "metric mile" is used in some countries, in sports such as
track and field athletics Track and field is a sport that includes athletic contests based on running, jumping, and throwing skills. The name is derived from where the sport takes place, a running track and a grass field for the throwing and some of the jumping eve ...
and
speed skating Speed skating is a competitive form of ice skating in which the competitors race each other in travelling a certain distance on skates. Types of speed skating are long track speed skating, short track speed skating, and marathon speed skatin ...
, to denote a distance of . The
1500 meters The 1500 metres or 1,500-metre run (typically pronounced 'fifteen-hundred metres') is the foremost middle distance track event in athletics. The distance has been contested at the Summer Olympics since 1896 and the World Championships in Athleti ...
is the premier
middle distance running Middle-distance running events are track races longer than sprints, up to 3000 metres. The standard middle distances are the 800 metres, 1500 metres and mile run, although the 3000 metres may also be classified as a middle-distance event. The 1 ...
event in Olympic sports. In United States high-school competition, the term is sometimes used for a race of .


Scandinavian

The Scandinavian mile (') remains in common use in Norway and Sweden, where it has meant precisely 10 km since metrication in 1889. It is used in informal situations and in measurements of fuel consumption, which are often given as litres per '. In formal situations (such as official road signs) and where confusion may occur with
international mile 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 ...
s, it is avoided in favour of kilometres. The Swedish mile was standardised as 36,000 Swedish feet or 10.6884 km in 1649; before that it varied by
province A province is almost always an administrative division within a country or state. The term derives from the ancient Roman '' provincia'', which was the major territorial and administrative unit of the Roman Empire's territorial possessions ou ...
from about 6 to 14.485 km. Before metrication, the Norwegian mile was 11.298 km. The traditional Finnish ' was translated as ' in Swedish and also set equal to 10 km during metrication in 1887, but is much less commonly used.


Comparison table

A comparison of the different lengths for a "mile", in different countries and at different times in history, is given in the table below.
League League or The League may refer to: Arts and entertainment * ''Leagues'' (band), an American rock band * ''The League'', an American sitcom broadcast on FX and FXX about fantasy football Sports * Sports league * Rugby league, full contact footba ...
s are also included in this list because, in terms of length, they fall in between the short West European miles and the long North, Central and Eastern European miles. Similar units: * 1,066.8 m –
verst A verst (russian: верста, ) is an obsolete Russian unit of length defined as 500 sazhen. This makes a verst equal to . Plurals and variants In the English language, ''verst'' is singular with the normal plural ''versts''. In Russian, the no ...
, see also
Obsolete Russian units of measurement A native system of weights and measures was used in Imperial Russia and after the Russian Revolution, but it was abandoned after 21 July 1925, when the Soviet Union adopted the metric system, per the order of the Council of People's Commissars. T ...


Idioms

Even in English-speaking countries that have moved from the Imperial to the metric system (for example, Australia, Canada, or New Zealand), the mile is still used in a variety of
idioms An idiom is a phrase or expression that typically presents a figurative, non-literal meaning attached to the phrase; but some phrases become figurative idioms while retaining the literal meaning of the phrase. Categorized as formulaic language, ...
. These include: * A '' country mile'' is used
colloquially Colloquialism (), also called colloquial language, everyday language or general parlance, is the linguistic style used for casual (informal) communication. It is the most common functional style of speech, the idiom normally employed in conversa ...
to denote 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"'''' Concise Oxford English Dictionary'' (5th edition; 1964).
Oxford University Press Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print books ...
. (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 quickly) * ''"Talk a mile a minute"'' (speak at a rapid rate) * ''"To go the extra mile"'' (to put in extra effort) * ''"Miles away"'' (lost in thought, or daydreaming) * ''"
Milestone A milestone is a numbered marker placed on a route such as a road, railway line, canal or boundary. They can indicate the distance to towns, cities, and other places or landmarks; or they can give their position on the route relative to so ...
"'' (an event indicating significant progress)


See also


Notes


References


Citations


Bibliography

* . * . * . * . * . * . * . * . * * * . * . * . * . * . * . * .  & * . * . * . * . * . * . * . * .


Further reading

* * (Item notes: Sammlung5-6 (1856–57) Original from Harvard University Digitized 9 January 2008) * * {{Authority control Ancient Roman geography Customary units of measurement in the United States Imperial units Obsolete Scottish units of measurement Surveying Units of length Croatian mile