Milligrams to grains
Type a value in milligrams to see it in grains straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the milligrams box.
- Read the result in grains as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
gr = mg × 0.01543235835
Multiply the value in milligrams by 0.01543235835 to get grains.
Example
To convert 25 mg to grains: 25 × 0.01543235835 = 0.385809 gr.
Conversion table
| Milligrams (mg) | Grains (gr) |
|---|---|
| 1 | 0.0154324 |
| 2 | 0.0308647 |
| 3 | 0.0462971 |
| 5 | 0.0771618 |
| 10 | 0.154324 |
| 20 | 0.308647 |
| 25 | 0.385809 |
| 50 | 0.771618 |
| 100 | 1.54324 |
| 250 | 3.85809 |
| 500 | 7.71618 |
| 1,000 | 15.4324 |
About the units
- Milligram
- One thousandth of a gram, used for medicine and supplement doses.
- Grain
- The grain is exactly 64.79891 milligrams; a pound has 7000 grains. It is used for gunpowder, bullets and some medicines.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many grains are in one milligram?
1 mg = 0.0154324 gr exactly.
How do I convert milligrams to grains?
Use gr = mg × 0.01543235835. For example, 25 mg = 0.385809 gr.
How many milligrams are in one grain?
1 gr = 64.7989 mg.
Are mass and weight the same thing?
Strictly no: mass is the amount of matter, in kilograms, while weight is the force of gravity on it, in newtons. Scales display mass, so everyday language uses the two words interchangeably.
What is the difference between an ounce and a troy ounce?
An ordinary ounce is 28.349523125 grams and is used for food and goods, while a troy ounce is 31.1034768 grams and is used to price gold and silver.