Grains to Grams
A grain is exactly 0.06479891 g. Named after a barley seed, it still measures bullet weights, powder charges and some pharmaceutical doses.
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Common values
Formula
g = grains × 0.06479891
The “pearl grain” used for gemstones is a quarter carat, 50 mg — a different unit entirely.
Frequently asked questions
Q. How many g is 1 grains?
1 grains is 0.0648 g, and 10 grains is 0.648 g. Type any value in the box above to convert instantly.
Q. And how many grains is 1 g?
1 g is 15.4324 grains. This converter works both ways, so typing in the right box updates the left one.
Q. Where is this unit used?
The “pearl grain” used for gemstones is a quarter carat, 50 mg — a different unit entirely.
Other converters
Traditional units (geun, doe, majigi and so on) vary by region and product.