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Convert Kilometer to Millimeter

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

From: kilometer
To: millimeter
     

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

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 to Millimeter Conversion Table

Kilometer [km]Millimeter [mm]
0.01 km10000 mm
0.1 km100000 mm
1 km1000000 mm
2 km2000000 mm
3 km3000000 mm
5 km5000000 mm
10 km10000000 mm
20 km20000000 mm
50 km50000000 mm
100 km100000000 mm
1000 km1000000000 mm


How to Convert Kilometer to Millimeter

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

Example: convert 15 km to mm:
15 km = 15 × 1000000 mm = 15000000 mm



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Convert Kilometer to Other Length Units

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