Length units calculator & converter tool
Conversions Table
Equivalent of 18 Foot: |
5486.1322767449 Millimeter |
548.61322767449 Centimeter |
5.4861322767449 Meter |
0.0054861322767449 Kilometer |
215.98957634867 Inch |
0.0034089234989333 Mile |
6.0018287107589 Yard |
0.0029625114294422 Nautical Mile |
Foot / Meter Units Definition
Foot
The foot is a unit of length of approximately 30 centimeters, corresponding to the length of a human foot of approximately size 45.In Antiquity, the foot was regularly divided into sixteen fingers or four palms. The Roman foot was 29.64 cm.Since the Middle Ages, the foot was also divided by twelve, which gave the inch. The foot of the King of France was 32.48 cm (size 48¾) and the Anglo-Saxon foot is 30.48 cm.
Meter
The meter is the unit of measurement par excellence since the origin of this unit comes from the Latin "metrum" and the Greek "metron" which mean measure. It is also this unit which gives its name to the diplomatic treaty which formalizes the decimal metric system: the convention of the meter, signed on May 20, 1875 by 17 nations, which today provides its basis for the International System of Units (SI).