Convert inch to millimeter
inch
Definition: Inch is a measure of typographic or digital-layout length. For conversion purposes, its value is 1440 times the reference unit, twip.
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 to millimeter Conversion Table
| inch [in] | millimeter [mm] |
|---|---|
| 0.01 inch | 0.2540 millimeter |
| 0.10 inch | 2.54 millimeter |
| 1 inch | 25.40 millimeter |
| 2 inch | 50.80 millimeter |
| 3 inch | 76.20 millimeter |
| 5 inch | 127.00 millimeter |
| 10 inch | 254.00 millimeter |
| 20 inch | 508.00 millimeter |
| 50 inch | 1270 millimeter |
| 100 inch | 2540 millimeter |
| 1000 inch | 25400 millimeter |
How to Convert inch to millimeter
1 inch = 25.40 millimeter
1 millimeter = 0.039370 inch
Example
Convert 15 inch to millimeter:
15 inch = 15 × 25.40 millimeter = 381.00 millimeter
