Grains to Milligrams
Type a value in gr and the mg equivalent appears instantly.
How to convert gr to mg
Multiply the gr value by 64.79891.
1 gr = 64.79891 mg
Quick conversion table
| gr | mg |
|---|---|
| 1 | 64.79891 |
| 2 | 129.5978 |
| 5 | 323.9945 |
| 10 | 647.9891 |
| 20 | 1295.9782 |
| 50 | 3239.9455 |
| 100 | 6479.891 |
| 500 | 32399.455 |
| 1000 | 64798.91 |
About the units
Grains (gr): The old apothecary unit: exactly 64.79891 mg. Bullets, arrows and gunpowder are still measured in grains.
Milligrams (mg): One thousandth of a gram, the standard for medicine doses and nutrients.