2.Centimeter is a basic unit of length.with its English symbol being &quot；cm，&quot；representing one-hundredth of a meter。3.One centimeter is equivalent to 1/100th of a meter or 0.01 meters。4.The conversion ratio between centimeters and millimeters is 1 cm = 10 mm.which is also equivalent to 0.1 decimeters or 0.01 meters。