A centimeter is larger than a millimeter. In the metric system, 1 centimeter is equal to 10 millimeters. To find the answer, one also can compare both of these measurements to the meter.
Using a metric conversion table, one finds that 1 centimeter is equal to 1/100 of a meter. Likewise, 1 millimeter equals 1/1,000 of a meter. It is evident that a centimeter is bigger than a millimeter.
One also can convert from the metric system to the imperial system to make this comparison in inches. Using conversion tables, one finds that 1 centimeter is equal to 0.3937 inches, and 1 millimeter equals 0.03937 inches. The comparison of these values also shows that a centimeter is bigger.