There are 15.43 grains in a gram.
1 Gram = 15.4323584 Grains
1 Grain = 0.06479891 Gram (or 64.79891 milligrams)
Gram is a metric system unit of mass. It is one thousandth (1/1000) of the metric system base unit, kilogram. The abbreviation is "g".
Grain is a unit of mass and based upon the average mass of a single seed of a cereal, wheat, barley, etc. 1 pound equals to 7000 grains. It is also used to measure the hardness of water and the mass of gunpowder. The abbreviation is "gr".