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Convert mm to inches Home / Length Conversion / Convert mm to inches Convert mm to inches Please provide values below to convert millimeter [mm] to inch [in], or vice versa . From: millimeter To: inch 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. Inch Definition: 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 Table Millimeter [mm] Inch [in] 0.01 mm 0.0003937008 in 0.1 mm 0.0039370079 in 1 mm 0.0393700787 in 2 mm 0.0787401575 in 3 mm 0.1181102362 in 5 mm 0.1968503937 in 10 mm 0.3937007874 in 20 mm 0.7874015748 in 50 mm 1.968503937 in 100 mm 3.937007874 in 1000 mm 39.3700787402 in How to Convert Millimeter to Inch 1 mm = 0.0393700787 in 1 in = 25.4 mm Example: convert 15 mm to in: 15 mm = 15 × 0.0393700787 in = 0.5905511811 in Popular Length Unit Conversions cm to inches inches to cm mm to inches inches to mm meters to feet feet to meters km to miles miles to km cm to feet feet to cm inches to feet feet to inches meters to yards yards to meters mm to cm cm to mm cm to m m to cm cm to km km to cm mm to feet feet to mm meters to miles miles to meters feet to miles miles to feet yards to feet feet to yards inches to meters meters to inches mm to m m to mm km to m m to km inches to yards yards to inches yards to miles miles to yards Convert Millimeter to Other Length Units mm to m Millimeter to Kilometer Millimeter to Decimeter mm to cm Millimeter to Micrometer Millimeter to Nanometer Millimeter to Mile Millimeter to Yard mm to feet 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.) 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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 about us | terms of use | privacy policy | sitemap © 2008 - 2026 unitconverters.net