## Metric units converter

**The metre** is the fundamental unit of length in the International System of Units (SI). Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole (at sea level).

**The millimetre** is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length.

**A yard** (abbreviation: yd) is exactly equal to 0.9144 metres.

**A foot** is a unit of length defined as being 0.3048 m exactly. It is subdivided into 12 inches.

**Inch** is defined as 1\12 of a foot and is therefore 1\36 of a yard or exactly 25.4 mm.

**Kilometer** is a unit of length in the metric system, equal to one thousand metres.

**A mile** is a unit of length, most commonly 5.280 feet (1.760 yards, or about 1.609 meters). The word mile originally derives from what the Romans referred to as mille passuum (Latin, "one thousand paces").

**The nautical mile **(symbol M, NM or nmi) is a unit of length equal to 1.852 metres exactly (about 6.076 feet).