Question: 1 mg is how many cc?
Answer: Conversion Table. 1 milligram (mg) = weight of 0.001 cubic centimeter (cc, cm3) of pure water at temperature 4 °C = 0.001 gram (g) = 0.000001 kilogram (kg). 1 cubic centimeter (cc, cm3) = 1 ml (milliliter) = 0.0338140227 US fluid ounces (fl. oz) = 1/1000 L (Liter, the official SI unit of volume).