cm - centimeter. Unit of length. 1 cm = 0.01 m. 1 cm = 10 mm. mm - millimeter. Unit of length. 1 mm = 0.001 m. 1 mm = 0.1 cm. m - meter. Unit of length. 1 m = 100 cm. 1 m = 1000 mm. kg - kilogram. Unit of mass. 1 kg = 1000 g. g - Unit of acceleration. 1 g = acceleration of free falling body near the Earth surface. 1 g = 9.81 = 32.17 . See the lessons - Converting feet to meters, inches to centimeters, miles to kilometers and vice versa - Converting speed units: miles per hour to kilometers per hour and vice versa - Converting measures of volume: cubic feet and cubic meters - Converting liquid volume measures: liters, gallons, and barrels - Units conversion examples in this site.