Convert Milligrams to stones
1 milligram = 0.000000157 stones · st = mg ÷ 6,350,293.18
When you need this conversion
This conversion goes from milligrams, the unit used for medication doses and nutrition labels, to stones, used in the UK and Ireland for body weight. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Milligrams to stones conversion table
| Milligrams (mg) | Stones (st) |
|---|---|
| 1 mg | 0.000000157 st |
| 2 mg | 0.000000315 st |
| 3 mg | 0.000000472 st |
| 5 mg | 0.000000787 st |
| 10 mg | 0.000001575 st |
| 15 mg | 0.000002362 st |
| 20 mg | 0.000003149 st |
| 25 mg | 0.000003937 st |
| 50 mg | 0.000007874 st |
| 75 mg | 0.00001181 st |
| 100 mg | 0.000015747 st |
| 250 mg | 0.000039368 st |
| 500 mg | 0.000078737 st |
| 1,000 mg | 0.000157473 st |
The formula
st = mg ÷ 6,350,293.18Because both units measure weight, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Stones to milligrams →Related weight conversions
- Kilograms to stones
- Grams to ounces
- Grams to carats
- Kilograms to pounds
- Metric tons to US tons
- Ounces to grams
- Pounds to kilograms
- Stones to kilograms
- US tons to metric tons
- Carats to grams
- Milligrams to grams
- Milligrams to kilograms
Frequently asked questions
- How many stones are in a milligram?
- There are 0.000000157 stones in 1 milligram. The formula is st = mg ÷ 6,350,293.18.
- How do you convert milligrams to stones?
- Use the formula st = mg ÷ 6,350,293.18. For example, 10 milligrams equals 0.000001575 stones.
- Is the milligrams to stones conversion exact?
- Yes. Milligrams and stones are both units of weight, related by an exact defined factor. Displayed results are rounded for readability.
- What is mg short for?
- mg is the standard symbol for milligram. st is the symbol for stone.