Convert Milligrams to Stones
Convert Milligrams (mg) to Stones (st) instantly and accurately.
Conversion Formula
st = mg × 1.574730444e-7
About Milligrams
A milligram (mg) is one thousandth of a gram (10⁻³ g). It is the primary unit for pharmaceutical dosing: aspirin tablets are typically 500 mg, ibuprofen 200-400 mg, and melatonin supplements 0.5-10 mg. Precious metal assay results and alloy compositions are specified in milligrams per kilogram (mg/kg = ppm). Nutritional labels worldwide list mineral content in milligrams - the recommended daily intake of iron is 8-18 mg, calcium 1000 mg, and sodium under 2300 mg. A grain of rice weighs about 25-30 mg, and a medium eyelash approximately 0.1 mg.
About Stones
A stone (st) equals 14 pounds or approximately 6.350 kg. It is the standard unit for expressing human body weight in the United Kingdom and Ireland, where a person will say they weigh '11 stone 4' (meaning 11 stone and 4 pounds, or 158 lb / 71.7 kg). Despite the UK's official adoption of the metric system, stones remain the dominant unit for personal body weight on British bathroom scales, in doctors' offices, and in everyday conversation. British newspapers and sports reports routinely describe athletes' weights in stones and pounds.
Quick Reference Table
| Milligrams (mg) | Stones (st) |
|---|---|
| 1 mg | 1.575 × 10-7 st |
| 2 mg | 3.149 × 10-7 st |
| 5 mg | 7.874 × 10-7 st |
| 10 mg | 1.575 × 10-6 st |
| 25 mg | 3.937 × 10-6 st |
| 50 mg | 7.874 × 10-6 st |
| 100 mg | 1.575 × 10-5 st |