Convert Grains (gr) to Milligrams (mg)
Enter a value below to convert Grains (gr) to Milligrams (mg).
Conversion:
1 Grains (gr) = 64.79891 Milligrams (mg)
How to Convert Grains (gr) to Milligrams (mg)
1 gr = 64.79891 mg
1 mg = 0.015432358353 gr
Example: convert 15 Grains (gr) to Milligrams (mg):
25 gr = 1619.97275 mg
Grains (gr) to Milligrams (mg) Conversion Table
| Grains (gr) | Milligrams (mg) |
|---|---|
| 0.01 gr | 0.6479891 mg |
| 0.1 gr | 6.479891 mg |
| 1 gr | 64.79891 mg |
| 2 gr | 129.59782 mg |
| 3 gr | 194.39673 mg |
| 5 gr | 323.99455 mg |
| 10 gr | 647.9891 mg |
| 20 gr | 1295.9782 mg |
| 50 gr | 3239.9455 mg |
| 100 gr | 6479.891 mg |
| 1000 gr | 64798.91 mg |
Grains (gr)
Definition
A grain (gr) is one of the oldest units of mass, equal to approximately 64.799 milligrams or 1/7000 of a pound avoirdupois.
History
The grain is historically based on the weight of a single cereal grain (wheat or barley). It has been used since ancient civilizations and was the basis for many historical weight systems including the troy and apothecaries' systems.
Current use
Grains are used in ammunition and firearms (bullet and powder charge weights), archery (arrow weights), and some pharmaceutical compounding. The gold and jewelry industries use troy grains.
Milligrams (mg)
Definition
A milligram (mg) is a metric unit of mass equal to one thousandth of a gram (0.001 g) or one millionth of a kilogram.
History
The milligram derives from the gram, established during the French Revolution as part of the metric system in 1795. It became essential with the development of analytical chemistry and pharmacology in the 19th century.
Current use
Milligrams are the standard unit for medication dosages, nutritional supplement amounts, vitamins, blood chemistry measurements, and chemical analysis. Nearly all pharmaceutical labels specify quantities in milligrams.