Grain
gr
The grain is one of the oldest units of measurement, originating from the weight of a grain of wheat or barley. Today, it survives primarily in specialized fields like ammunition reloading and gemstone weighing.
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Grain (gr)
The grain is one of the oldest units of measurement, originating from the weight of a grain of wheat or barley. Today, it survives primarily in specialized fields like ammunition reloading and gemstone weighing.
Characteristics
- Imperial system unit
- 1 grain = 64.79891 milligrams
- 1 grain = 1/7000 pound
- Historic origins: based on the weight of grain seeds
- Modern use: ammunition reloading, gemstones, pharmaceuticals
Conversions
- 1 gr = 64.79891 mg
- 1 gr = 0.06479891 g
- 1 gr = 1/7000 pound
- 1 gr = 1/480 ounce (troy)
- 7000 grains = 1 pound
- 240 grains = 1 troy ounce