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Convert Millimeter to Kilometer

Please provide values below to convert millimeter [mm] to kilometer [km], or vice versa.

From: millimeter
To: kilometer
     

Millimeter

Definition: A millimeter (symbol: mm) is a unit of length in the International System of Units (SI). It is defined in terms of the meter, as 1/1000 of a meter, or the distance traveled by light in 1/299 792 458 000 of a second.

History/origin: The milli- prefix is one of many metric prefixes. It indicates one thousandth of the base unit, in this case the meter. The definition of the meter has changed over time, the current definition being based on the distance traveled by the speed of light in a given amount of time. The relationship between the meter and the millimeter is constant however. Prior to the current definition, the meter was based on the length of a prototype meter bar. As with all SI units, the definition of the meter is subject to change, and it is possible that a new definition of the meter will be in place in the future.

Kilometer

Definition: A kilometer (symbol: km) is a unit of length in the International System of Units (SI). One kilometer is equivalent to 0.6214 miles.

History/origin: The prefix kilo- is a metric prefix indicating one thousand. One kilometer is therefore one thousand meters. The origin of the kilometer is linked to that of the meter, and its current definition as the distance traveled by light in 1/299 792 458 second. This definition is subject to change, but the relationship between the meter and the kilometer will remain constant.

Current use: It is currently the official unit of measurement for expressing distances between geographical places on land in most of the world. However, there still remain a number of countries that primarily use the mile instead of the kilometer including the United States and the United Kingdom (UK). Unlike the United States, the UK has adopted the metric system; while the metric system is widely used in government, commerce, and industry, remnants of the imperial system can still be seen in the UK's use of miles in its road systems.



Millimeter to Kilometer Conversion Table

Millimeter [mm]Kilometer [km]
0.01 mm1.0E-8 km
0.1 mm1.0E-7 km
1 mm1.0E-6 km
2 mm2.0E-6 km
3 mm3.0E-6 km
5 mm5.0E-6 km
10 mm1.0E-5 km
20 mm2.0E-5 km
50 mm5.0E-5 km
100 mm0.0001 km
1000 mm0.001 km


How to Convert Millimeter to Kilometer

1 mm = 1.0E-6 km
1 km = 1000000 mm

Example: convert 15 mm to km:
15 mm = 15 × 1.0E-6 km = 1.5E-5 km



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Convert Millimeter to Other Length Units

mm to m
Millimeter to Decimeter
mm to cm
Millimeter to Micrometer
Millimeter to Nanometer
Millimeter to Mile
Millimeter to Yard
mm to feet
mm to inches
Millimeter to Light Year
Millimeter to Break
Millimeter to Exameter
Millimeter to Petameter
Millimeter to Terameter
Millimeter to Gigameter
Millimeter to Megameter
Millimeter to Hectometer
Millimeter to Dekameter
Millimeter to Micron
Millimeter to Picometer
Millimeter to Femtometer
Millimeter to Attometer
Millimeter to Megaparsec
Millimeter to Kiloparsec
Millimeter to Parsec
Millimeter to Astronomical Unit
Millimeter to League
Millimeter to Nautical League (UK)
Millimeter to Nautical League (int.)
Millimeter to League (statute)
Millimeter to Nautical Mile (UK)
Millimeter to Nautical Mile (international)
Millimeter to Mile (statute)
Millimeter to Mile (US Survey)
Millimeter to Mile (Roman)
Millimeter to Kiloyard
Millimeter to Furlong
Millimeter to Furlong (US Survey)
Millimeter to Chain
Millimeter to Chain (US Survey)
Millimeter to Rope
Millimeter to Rod
Millimeter to Rod (US Survey)
Millimeter to Perch
Millimeter to Pole
Millimeter to Fathom
Millimeter to Fathom (US Survey)
Millimeter to Ell
Millimeter to Foot (US Survey)
Millimeter to Link
Millimeter to Link (US Survey)
Millimeter to Cubit (UK)
Millimeter to Hand
Millimeter to Span (cloth)
Millimeter to Finger (cloth)
Millimeter to Nail (cloth)
Millimeter to Inch (US Survey)
Millimeter to Barleycorn
Millimeter to Mil
Millimeter to Microinch
Millimeter to Angstrom
Millimeter to A.u. Of Length
Millimeter to X-unit
Millimeter to Fermi
Millimeter to Arpent
Millimeter to Pica
Millimeter to Point
Millimeter to Twip
Millimeter to Aln
Millimeter to Famn
Millimeter to Caliber
Millimeter to Centiinch
Millimeter to Ken
Millimeter to Russian Archin
Millimeter to Roman Actus
Millimeter to Vara De Tarea
Millimeter to Vara Conuquera
Millimeter to Vara Castellana
Millimeter to Cubit (Greek)
Millimeter to Long Reed
Millimeter to Reed
Millimeter to Long Cubit
Millimeter to Handbreadth
Millimeter to Fingerbreadth
Millimeter to Planck Length
Millimeter to Electron Radius (classical)
Millimeter to Bohr Radius
Millimeter to Earth's Equatorial Radius
Millimeter to Earth's Polar Radius
Millimeter to Earth's Distance From Sun
Millimeter to Sun's Radius