Miles to Nautical Leagues (mi to nlea)
1 mile equals 0.2896587473 nautical leagues (rounded).
How to convert miles to nautical leagues
To convert miles to nautical leagues, multiply the number of miles by 0.2896587473. The factor is rounded to 10 significant digits. To go the other way, multiply nautical leagues by 3.452338344 (rounded).
nautical leagues = miles × 0.2896587473
Example: 10 miles = 2.896587473 nautical leagues.
About these units
Mile (mi)
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
Nautical League (nlea)
Three nautical miles (5.556 km). Used at sea; the title of Jules Verne's novel counts distance in these.
Jules Verne's 1870 novel title promises twenty thousand leagues beneath the sea, a number that would circle the planet several times over, and the unit behind it is worth unpacking. Leagues descend from a Celtic measure that Rome took over as the leuga, supposedly about what a person could walk in an hour. Seafaring nations later adapted the word to the water, where distance was reckoned from the sea rather than from the road.
At sea, English usage made a league three nautical miles. With the international nautical mile fixed at exactly 1,852 m by a hydrographic conference at Monaco in 1929, that gives 5,556 m, the figure used here, or 5.556 km. It equals thirty cables and covers three minutes of latitude. Earlier national nautical miles differed a little, and Portugal and Spain defined maritime leagues from fractions of a degree of meridian, so values near 5.5 to 6.2 km turn up in older texts. Verne's league was a French unit, a metric one of 4,000 m having been legal in France from 1812 to 1840, and the nautical league is now only historical.
1 nautical league = 5,556 meters (exactly).
Sources: Wikipedia: League (unit); Wikipedia: Nautical mile
Related conversions
- Nautical leagues to miles (reverse)
- Miles to meters
- Miles to kilometers
- Miles to centimeters
- Miles to millimeters
- Miles to inches
- Miles to feet
- Miles to yards
- Miles to micrometers
- Miles to nanometers
- Miles to nautical miles
- Miles to pixels (CSS)
- Miles to light-years
- Meters to nautical leagues
- Kilometers to nautical leagues
- Centimeters to nautical leagues
- Millimeters to nautical leagues
- Inches to nautical leagues
- Feet to nautical leagues
- Yards to nautical leagues
See all length units.