Grain to Gram Conversion and a Grain Conversion Chart1 grain (gr) = 64.79891 mg (milligrams) = 0.06479891 g (grams) According to Wikipedia,
this is the metric (SI) definition since 1958. The Metric Conversion Chart below is simple to
use. For different measurements, volumes, temperature, area, speed and time change the
chart with these modifications on the right side of the chart.
A Metric Conversion Charthttp://www.metric-conversions.org/weight/grains-to-grams.htm1 gram = 15.432 358 353 grain 70 Grains gr = 4.5359 Grams g1 pound = 7000 grainsAt 70 grains a 1 pound can gives you 100 shoots, always wondered about this.In the US, in medicine, the use of grains is disappearing and seems to be somewhat approximate:
A 60 mg dose may be described as "1 grain", but you should expect 1 grain to be about 65 mg, or
0.065 grams.
There are also two specialized units called the 'pearl grain', used for weighing pearls, and the 'metric
grain' used for diamonds, and these are 1/4 carat or 50 mg.