A gram is a unit of mass in the metric system, and it is equal to 100 centigrams. This means that if you have 1 gram, it can be divided into 100 smaller units called centigrams. The prefix ‘centi-‘ in centigram stands for one hundredth, so a centigram is one hundredth of a gram. Therefore, to convert grams to centigrams, you simply multiply the number of grams by 100. For example, 2 grams would be equal to 200 centigrams.