A millimeter is equal to 0.001 meter, 0.0393700787402 inch and 0.1 centimeter. Finding these different measurements requires using certain conversion factors. In the SI system, millimeters is a measurement unit of length, and one meter is equal to 1000 millimeters.
To convert between meters and millimeters, it is a matter of using the above given conversion factor. Similarly, when converting from SI units to Imperial units like inches or feet, it is important to use the appropriate conversion factors. For example, to convert from inches to milliliters, the conversion factor used is that one inch is equal to 2.54 millimeters. Conversely, one millimeter is equal to 1/2.54 inch or 0.039370078742 inch.