About the Units
petagram (Pg)
A unit of mass equal to 10^15 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 Pg = 15432359000000000.0 gr
- 6.479891e-17 Pg = 1 gr