Roman Miles to Miles (mp to mi)

1 Roman mile equals 0.9196293645 miles (rounded).

1 Roman mile = 0.9196293645 miles

How to convert Roman miles to miles

To convert Roman miles to miles, multiply the number of Roman miles by 0.9196293645. The factor is rounded to 10 significant digits. To go the other way, multiply miles by 1.087394595 (rounded).

miles = Roman miles × 0.9196293645

Example: 10 Roman miles = 9.196293645 miles.

Approximate value. Standards for the Roman mile varied by place and period, so this converter uses the most commonly cited value. Treat results as estimates, not exact figures.

About these units

Roman Mile (mp)

Ancient RomanHistorical unit (no longer in standard use)Approximate value

'A thousand paces' (mille passus): 5,000 Roman feet, about 1.48 km. The word 'mile' comes from it, and Roman roads were marked with milestones at this interval.

Latin speakers called it mille passus, a thousand paces, usually abbreviated m.p. A pace was counted each time the same foot struck the ground, so it spanned two steps and was reckoned at five Roman feet, which made the mile 5,000 feet. The English word mile descends from the shortened form of the Latin phrase, through Old English mil.

The length rests on the Roman foot, and that foot is not fixed precisely. Modern estimates of the mile cluster near 1,480 m, one empirical figure being about 1,479 m, and this is the figure used here. Marcus Agrippa's standard foot of around 29 BC is credited with indirectly standardizing it, but measured surviving feet vary by a few millimetres, which shifts the mile by metres.

Stone markers stood at every mile along the empire's paved roads, measured out from the Golden Milestone in the Forum. Eight Roman stadia made a mile, and in Greek-speaking provinces it was rendered as the milion. At roughly 0.92 of an international mile, it survives in the name of the modern mile, though later European miles drifted to very different lengths.

1 Roman mile = 1,480 meters (approximately).

Sources: Wikipedia: Roman mile; Wikipedia: Roman units of measurement

Mile (mi)

US & ImperialCurrent unit

5,280 feet or 1,760 yards, exactly 1,609.344 meters. This is the statute (international) mile used on US and UK roads.

A thousand paces gave the mile its name. It descends from the Latin mille passus, the Roman mile, by way of Old English mil and Middle English myle. For centuries after Rome, miles of many lengths coexisted; a sixteenth-century Mercator map, for example, shows small, medium and large Flemish miles on a single scale bar. The English statute mile was fixed by an Act of Parliament under Elizabeth I in 1593, which declared that a mile contains eight furlongs, or 5,280 feet.

The 1959 international yard and pound agreement made that mile exactly 1,609.344 meters. A slightly longer US survey mile, about 1,609.347 meters, lingered in American land surveys and was slated for retirement from 1 January 2023. Today the mile is the road unit of the United Kingdom, the United States, Liberia and Myanmar, along with several territories such as the Bahamas, Belize, Guam and the US Virgin Islands. In Canada it survives chiefly in rail transport and horse racing.

1 mile = 1,609.344 meters (exactly).

Sources: Wikipedia: Mile; Wikipedia: Foot (unit); NIST Guide to the SI, Appendix B.8: conversion factors

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