how do you convert from cm squared to mm squared
1 Sq. Millimeter = 0.01 Sq. Centimeter. Square centimeters and square millimeters metric area units conversion factors are below. To find out how many square millimeters in sq. centimeters, multiply by the right factor or simply use the converter below.1 Sq. Centimeter = 100 Sq. Millimeters. Sq. centimeter (centimetre) and square millimeter (millimetre) are metric system area measurement units. The abbreviations are cm 2  and mm 2 .o find out how many square millimeters in sq. centimeters, multiply by the right factor or simply use the converter below. 1 Sq. Centimeter = 100 Sq. Millimeters. Sq. centimeter (centimetre) and square millimeter (millimetre) are metric system area measurement units.