Convert Kilometers to Miles

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Kilometers
Miles

Kilometers

Definition

A kilometer (symbol: km) is a unit of length in the metric system, equal to 1000 meters or approximately 0.621371 miles.

History/Origin

The kilometer was introduced as part of the metric system in the late 18th century, using the prefix 'kilo' to denote one thousand meters.

Current Use

The kilometer is the standard unit for measuring longer distances in most countries worldwide. It is used for road distances, geographic measurements, and general distance calculations.

Miles

Definition

A mile (symbol: mi) is a unit of length in the imperial and US customary systems, equal to 5280 feet or approximately 1.60934 kilometers.

History/Origin

The mile originated from the Roman mille passus, meaning 'thousand paces.' The current statute mile was standardized in Britain in 1593 during the reign of Queen Elizabeth I.

Current Use

The mile remains the standard unit for road distances and speed limits in the United States and United Kingdom. It is also used in maritime and aviation contexts as the nautical mile.