About the Units
nanogram (ng)
A unit of mass equal to 10^-9 grams or 10^-12 kilograms.
grain (gr)
A unit of mass equal to 64.79891 milligrams, originally based on the weight of a grain of barley.
Common Conversions
- 1 ng = 1.543236e-8 gr
- 64798908.0 ng = 1 gr