Inches to mm ► Show
* The inches fraction result is rounded to the nearest 1/64 fraction. How to convert millimeters to inches1 millimeter is equal to 0.03937007874 inches: 1mm = (1/25.4)″ = 0.03937007874″ The distance d in inches (″) is equal to the distance d in millimeters (mm) divided by 25.4: d(″) = d(mm) / 25.4 ExampleConvert 20 mm to inches: d(″) = 20mm / 25.4 = 0.7874″ How many inches in a millimeterOne millimeter is equal to 0.03937 inches: 1mm = 1mm / 25.4mm/in = 0.03937in How many millimeters in an inchOne inch is equal to 25.4 millimeters: 1in = 25.4mm/in × 1in = 25.4mm How to convert 10mm to inchesDivide 10 millimeters by 25.4 to get inches: 10mm = 10mm / 25.4mm/in = 0.3937in Millimeters to inches conversion tableThe fraction inches are rounded to 1/64 resolution.
Inches to mm ► See also
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 Table
How to Convert Millimeter to Inch1 mm = 0.0393700787 in Example: convert 15 mm to in: Popular Length Unit ConversionsConvert Millimeter to Other Length UnitsIs 1 mm equal to 1 inch?Difference between Millimeters and Inches
While a millimeter is a measurement of length and is equal to one-thousandth of a meter, an inch is another measurement of length equal to 25.4 millimeters.
Is 1mm the same as 1/8 inch?1mm = just over 1/32 inch. 2mm = just over 1/16 inch. 3mm = almost 1/8 inch.
What is 1mm equal to in inches?
What is exactly 1 mm?One millimetre is equal to 1000 micrometres or 1000000 nanometres. Since an inch is officially defined as exactly 25.4 millimetres, a millimetre is equal to exactly 5⁄127 (≈ 0.03937) of an inch.
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