Square centimeters and square millimeters (cm2 to mm2) metric area units conversion factor is 100. To find out how many square millimeters in square centimeters, multiply the square centimeter value by 100.
1 Square Centimeter = 100 Square Millimeters
1 Square Millimeter = 0.01 Square Centimeter
There are 100 square millimeters in a square centimeter, because one centimeter is 10 millimeters and the area of a square is calculated by multiplying a side by itself, that makes 10 * 10 = 100 square millimeters in a square centimeter.
For example, to find out how many sq. millimeters there are in a square centimeter and a half, as a formula to convert from sq. centimeters to sq. millimeters, multiply the sq. centimeter value by 100, that makes 1.5 cm2 * 100 = 150 sq. millimeters in 1.5 sq. centimeter.
Square centimeter (centimetre) and square millimeter (millimetre) are metric system area measurement units. 1 Square centimeter is equal to 100 square millimeters. The abbreviations are "cm2" and "mm2".