Convert from microgram to gram

Unit Definition (microgram)
The microgram is a metric unit of mass equal to 0.001 milligram (mg) or one millionth of a gram. Ingredients of drugs and vitamins are often stated in micrograms.

Unit Definition (gram)
The metric unit of mass, called the "gram" was defined as the mass of one cubic centimeter (a cube that is 1/100 of a meter on each side) of water at its temperature of maximum density.