This is not always the same! Most insulin sold for humans is concentrated at 100 units per ml (U100 insulin). But some insulin is not.In the case of U100 insulin, however,1 cc equals 1ml equals 100...
If you are referring to standard U100 insulin, there would be 100 units per ml (same as cc), or 300 units in 3 ml. A milliliter (ml) is a measure of volume, while a cubic centimeter (cc) is a measure...
You cannot make a direct conversion of insulin IU to ml. It depends on the concentration of insulin in the vial you are using. One commonly used concentration is 100 IU/ml, (sometimes called "U100"...