About the Units
grain (gr)
A unit of mass equal to 64.79891 milligrams, originally based on the weight of a grain of barley.
dalton (Da)
A unit of mass approximately equal to the mass of a hydrogen atom, used in atomic and molecular physics.
Common Conversions
- 1 gr = 3.9022813e22 Da
- 2.5626036e-23 gr = 1 Da