Spans to Miles (span to mi)

1 span equals 0.0001420454545 miles (rounded).

1 span = 0.0001420454545 miles

How to convert spans to miles

To convert spans to miles, multiply the number of spans by 0.0001420454545. The factor is rounded to 10 significant digits. To go the other way, multiply miles by 7,040.

miles = spans × 0.0001420454545

Example: 10 spans = 0.001420454545 miles.

About these units

Span (span)

Medieval EnglishHistorical unit (no longer in standard use)

9 inches (22.86 cm), the distance from the tip of the thumb to the tip of the little finger of a spread hand.

Stretch your fingers as wide as they go and the gap from thumb tip to little fingertip is a span. The English word descends from Old English spann and a Proto-Germanic form meaning handbreadth, itself tied to a root meaning to stretch. Greek writers had spithame, which appears in Herodotus in the 5th century BC, and Hesiod used a word meaning three spans long three centuries earlier. Ancient systems treated the span as half a cubit, or three palms.

The English handspan is 9 inches, or 22.86 cm, and Wiktionary notes it as an eighth of a fathom. That is the figure used here, though a hand's reach differs from person to person and other countries' spans differ too: about 23 cm for a Slovenian great span, 17.8 cm for the Russian piad, and 15 to 20 cm in Chinese usage. A little or short span, from thumb to index finger, was much smaller. The unit is now mostly a figure of speech, as in the span of a bridge or of a wing.

1 span = 0.2286 meters (exactly).

Sources: Wikipedia: Span (unit); Wiktionary: span

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

Related conversions

See all length units.