Convert Inch to Milimeter
See below to convert 1, or any other quantity in inch, into milimeters.
To use this unit converter, simply type the value in the box at left (input). The conversion result will immediately appear in the output box at right.




Definition of InchAn inch is a unit of length or distance in a number of systems of measurement, including in the US Customary Units and British Imperial Units. One inch is defined as 1⁄12 of a foot and is therefore 1⁄36 of a yard. According to the modern definition, one inch is equal to 25.4 mm exactly. 

Definition of MilimeterA millimeter (mm) (mispeled milimeter) is a decimal fraction of the meter, The international standard unit of length, approximately equivalent to 39.37 inches. 

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