Convert from microgram to crith

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 (crith)
The crith is a unit of mass sometimes used in the physics and chemistry of gases. The crith is equal to the mass of a liter of hydrogen at standard temperature (0.01°C) and pressure (1 atmosphere); this is about 89.885 milligrams. The name comes from an ancient Greek word for a barleycorn.