About the Units
grain (gr)
A unit of mass equal to 64.79891 milligrams, originally based on the weight of a grain of barley.
pennyweight (dwt)
A unit of mass equal to 1/20 of a troy ounce or approximately 1.55 grams.
Common Conversions
- 1 gr = 0.04166666 dwt
- 24.000004 gr = 1 dwt