Milligrams to Grains
Convert milligrams (mg) to grains (gr). Type in either box; the other updates as you go.
How to convert milligrams to grains
To convert milligrams to grains, divide the number of milligrams by 64.79891.
Example
Convert 100 milligrams to grains:
Milligram to grain conversion chart
| Milligrams (mg) | Grains (gr) |
|---|---|
| 1 mg | 0.01543236 gr |
| 2 mg | 0.03086472 gr |
| 3 mg | 0.04629708 gr |
| 4 mg | 0.06172943 gr |
| 5 mg | 0.07716179 gr |
| 6 mg | 0.09259415 gr |
| 7 mg | 0.1080265 gr |
| 8 mg | 0.1234589 gr |
| 9 mg | 0.1388912 gr |
| 10 mg | 0.1543236 gr |
| 12 mg | 0.1851883 gr |
| 15 mg | 0.2314854 gr |
| 20 mg | 0.3086472 gr |
| 25 mg | 0.385809 gr |
| 30 mg | 0.4629708 gr |
| 40 mg | 0.6172943 gr |
| 50 mg | 0.7716179 gr |
| 60 mg | 0.9259415 gr |
| 70 mg | 1.080265 gr |
| 75 mg | 1.157427 gr |
| 80 mg | 1.234589 gr |
| 90 mg | 1.388912 gr |
| 100 mg | 1.543236 gr |
| 150 mg | 2.314854 gr |
| 200 mg | 3.086472 gr |
| 250 mg | 3.85809 gr |
| 500 mg | 7.716179 gr |
| 1,000 mg | 15.43236 gr |
Going the other way? See the grains to milligrams chart.
About the units
Milligram (mg)
A milligram is one thousandth of a gram. Medicine doses and nutrition labels use milligrams.
Grain (gr)
A grain is exactly 64.79891 milligrams. There are 7,000 grains in a pound; it is used for bullets, arrows and some medicines.
Frequently asked questions
How many grains are in a milligram?
There are 0.01543235835 grains in a milligram.
How many milligrams are in a grain?
There are 64.79891 milligrams in a grain.
How do you convert milligrams to grains?
To convert milligrams to grains, divide the number of milligrams by 64.79891.
What is 100 milligrams in grains?
100 milligrams equals 1.54324 grains.
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