Millimeter (mm)
The millimeter is a unit of length, used for precision engineering, rainfall measurement, medical imaging, and printing. Its symbol is mm.
mm
ft
1 millimeter equals
| Feet | 0.00328084 ft |
| Meters | 0.001 m |
| Miles | 6.21371e-7 mi |
| Kilometers | 0.000001 km |
About the millimeter
The millimeter entered common use alongside the metric system in the early 19th century. The prefix "milli" comes from Latin "mille" meaning thousand.
In everyday use the millimeter appears in precision engineering, rainfall measurement, medical imaging, and printing. As a point of reference: a typical paperclip wire is about 1 mm thick.