Convert Millimeter To Kilometer - Unit Converter

Home / Length Conversion / Convert Millimeter to Kilometer 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 this definition, the meter was based on the length of a prototype meter bar. In 2019, the meter has been re-defined based on the changes made to the definition of a second.

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 mm	1.0E-8 km
0.1 mm	1.0E-7 km
1 mm	1.0E-6 km
2 mm	2.0E-6 km
3 mm	3.0E-6 km
5 mm	5.0E-6 km
10 mm	1.0E-5 km
20 mm	2.0E-5 km
50 mm	5.0E-5 km
100 mm	0.0001 km
1000 mm	0.001 km

How to Convert Millimeter to Kilometer

1 mm = 1.0E-6 km1 km = 1000000 mm

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

Popular Length Unit Conversions

cm to inchesinches to cmmm to inchesinches to mmmeters to feetfeet to meterskm to milesmiles to kmcm to feetfeet to cminches to feetfeet to inchesmeters to yardsyards to metersmm to cmcm to mmcm to mm to cmcm to kmkm to cmmm to feetfeet to mmmeters to milesmiles to metersfeet to milesmiles to feetyards to feetfeet to yardsinches to metersmeters to inchesmm to mm to mmkm to mm to kminches to yardsyards to inchesyards to milesmiles to yards

Convert Millimeter to Other Length Units

mm to mMillimeter to Decimetermm to cmMillimeter to MicrometerMillimeter to NanometerMillimeter to MileMillimeter to Yardmm to feetmm to inchesMillimeter to Light YearMillimeter to BreakMillimeter to ExameterMillimeter to PetameterMillimeter to TerameterMillimeter to GigameterMillimeter to MegameterMillimeter to HectometerMillimeter to DekameterMillimeter to MicronMillimeter to PicometerMillimeter to FemtometerMillimeter to AttometerMillimeter to MegaparsecMillimeter to KiloparsecMillimeter to ParsecMillimeter to Astronomical UnitMillimeter to LeagueMillimeter 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 KiloyardMillimeter to FurlongMillimeter to Furlong (US Survey)Millimeter to ChainMillimeter to Chain (US Survey)Millimeter to RopeMillimeter to RodMillimeter to Rod (US Survey)Millimeter to PerchMillimeter to PoleMillimeter to FathomMillimeter to Fathom (US Survey)Millimeter to EllMillimeter to Foot (US Survey)Millimeter to LinkMillimeter to Link (US Survey)Millimeter to Cubit (UK)Millimeter to HandMillimeter to Span (cloth)Millimeter to Finger (cloth)Millimeter to Nail (cloth)Millimeter to Inch (US Survey)Millimeter to BarleycornMillimeter to MilMillimeter to MicroinchMillimeter to AngstromMillimeter to A.u. Of LengthMillimeter to X-unitMillimeter to FermiMillimeter to ArpentMillimeter to PicaMillimeter to PointMillimeter to TwipMillimeter to AlnMillimeter to FamnMillimeter to CaliberMillimeter to CentiinchMillimeter to KenMillimeter to Russian ArchinMillimeter to Roman ActusMillimeter to Vara De TareaMillimeter to Vara ConuqueraMillimeter to Vara CastellanaMillimeter to Cubit (Greek)Millimeter to Long ReedMillimeter to ReedMillimeter to Long CubitMillimeter to HandbreadthMillimeter to FingerbreadthMillimeter to Planck LengthMillimeter to Electron Radius (classical)Millimeter to Bohr RadiusMillimeter to Earth's Equatorial RadiusMillimeter to Earth's Polar RadiusMillimeter to Earth's Distance From SunMillimeter to Sun's Radius