2 meters is equal to 2000 millimeters. To convert meters to millimeters, multiply by 1000, and to convert millimeters to meters divide by 1000. (Meters to milimeters: move decimal to right 3 times, and millimeters to meters, 3 times to the left.)

The definition of a millimeter is 1/1000 of a meter. That means there are 1000 millimeters in one meter. That would lead one to logically assume there are 2000 millimeters in 2 meters and 12,000 millimeters in 12 meters.