This document provides conversions between different units of length including millimeters, centimeters, meters, and kilometers. It lists the equivalents such as 10 millimeters equals 1 centimeter, 100 centimeters equals 1 meter, and 1000 meters equals 1 kilometer. Conversions are also given for fractional amounts like 500 millimeters equals 1/2 meter and 750 millimeters equals 3/4 meter.