Please provide values below to convert millimeter [mm] to inch [in], or vice versa.
MillimeterDefinition: 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.
InchDefinition: An inch (symbol: in) is a unit of length in the imperial and US customary systems of measurement. An inch was defined to be equivalent to exactly 25.4 millimeters in 1959. There are 12 inches in a foot and 36 inches in a yard.
History/origin: The term "inch" was derived from the Latin unit "uncia" which equated to "one-twelfth" of a Roman foot.
There have been a number of different standards for the inch in the past, with the current definition being based on the international yard. One of the earliest definitions of the inch was based on barleycorns, where an inch was equal to the length of three grains of dry, round barley placed end-to-end. Another version of the inch is also believed to have been derived from the width of a human thumb, where the length was obtained from averaging the width of three thumbs: a small, a medium, and a large one.
Current use: The inch is mostly used in the United States, Canada, and the United Kingdom. It is also sometimes used in Japan (as well as other countries) in relation to electronic parts, like the size of display screens.
Millimeter to Inch Conversion TableMillimeter [mm]Inch [in]0.01 mm0.0003937008 in0.1 mm0.0039370079 in1 mm0.0393700787 in2 mm0.0787401575 in3 mm0.1181102362 in5 mm0.1968503937 in10 mm0.3937007874 in20 mm0.7874015748 in50 mm1.968503937 in100 mm3.937007874 in1000 mm39.3700787402 inHow to Convert Millimeter to Inch1 mm = 0.0393700787 in1 in = 25.4 mm
Example: convert 15 mm to in:15 mm = 15 × 0.0393700787 in = 0.5905511811 in
Popular Length Unit Conversionscm 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 yardsConvert Millimeter to Other Length Unitsmm to mMillimeter to KilometerMillimeter to Decimetermm to cmMillimeter to MicrometerMillimeter to NanometerMillimeter to MileMillimeter to Yardmm to feetMillimeter 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