Milligrams (mg) to Stones (st) Conversion
Milligrams
The milligram is a unit of mass equal to one thousandth of a gram (10⁻⁶ kg) and is the standard unit of dosage in pharmacology and clinical medicine. Drug doses, vitamin quantities, and mineral recommended daily allowances are routinely expressed in milligrams, where precision is critical: in many medications the therapeutic margin is narrow, making accurate measurement a matter of patient safety.
Stones
The stone is a unit of mass equal to exactly 14 pounds (approximately 6.35 kilograms), used almost exclusively in the United Kingdom and Ireland for expressing human body weight. Standardised by the Weights and Measures Act of 1835, the stone persists in British popular culture and medical contexts despite not being part of the SI system.
| Milligrams (mg) | Stones (st) |
|---|---|
| 0.1 mg | 0.0000000157 st |
| 1 mg | 0.000000157 st |
| 2 mg | 0.000000315 st |
| 3 mg | 0.000000472 st |
| 5 mg | 0.000000787 st |
| 10 mg | 0.00000157 st |
| 20 mg | 0.00000315 st |
| 30 mg | 0.00000472 st |
| 50 mg | 0.00000787 st |
| 100 mg | 0.0000157 st |
| 1000 mg | 0.000157 st |
Frequently Asked Questions (FAQ)
How many stones are in 1 milligrams?
1 milligrams (mg) is exactly 0.000000157 stones (st).
How do I convert milligrams to stones?
Multiply the value in milligrams by 0.000000157 to get the result in stones. Or use the converter above — type any number and see the result instantly.