Units of measurement
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Calculations
Milligram (mg)
Grain (gr)
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Information
Milligram (mg)
Milligram (mg) — a unit of mass equal to one-thousandth of a gram (0.001 g).
Grain (gr)
Grain (gr) — a small unit of mass used in medicine and firearms, equal to 1/7000 of a pound or 64.79891 milligrams.