A millimeter is a unit of length in the metric system that is equivalent to one- thousand of a meter. the centimeter is also a unit of length in the metric system, that is equal to one-hundredth of a meter. Therefore. 1 cm is equal to 10 mm. to convert millimeters into centimeters you need to divide the number of millimeters by 10. In this case, 0.230 divided by 10 is equal to 0.00230.
