About the Units
grain (gr)
A unit of mass equal to 64.79891 milligrams, originally based on the weight of a grain of barley.
picogram (pg)
A unit of mass equal to 10^-12 grams or 10^-15 kilograms.
Common Conversions
- 1 gr = 64798910000.0 pg
- 1.5432359e-11 gr = 1 pg