The term "mile" is derived from the old Roman word "mille passus", which meant "a thousand paces", and the abbreviation for this unit is "mi". A kilometer, on the other hand, is derived from the French kilomètre (1795) which means "a thousand meters".
Miles and kilometers are two different units of measure for length or distance. A distance of one mile equals 1.6 kilometers or 1600 meters.
A kilometer is the most common unit for measuring distance on land, while a mile is a unit used for measuring distance over water.