Convert weight and mass units — kilograms, pounds, ounces, grams, tons, stones.
| Unit | Name | Value |
|---|---|---|
| kg | Kilogram | 0.000001 |
| g | Gram | 0.001 |
| t | Metric Ton | 1.000000e-9 |
| lb | Pound | 0.0000022046244 |
| oz | Ounce | 0.000035273991 |
| st | Stone | 1.5747312e-7 |
The Milligram (mg) and the Stone (st) are both units of weight & mass. Converting between them is straightforward using the formula above.
Formula: 1 mg = 1.574731e-7 st
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
| Milligram (mg) | Stone (st) | Real-world context |
|---|---|---|
| 1 mg | 1.5747e-07 st | |
| 1000 mg | 0.00015747 st | 1 gram |
| 1,000,000 mg | 0.15747312 st | |
| 1.0000e+09 mg | 157.4731 st | |
| 1.0000e+12 mg | 157473.1233 st |
1 milligram (mg) equals exactly 1.5747e-07 stone (st). Use the formula: mg × 1.5747e-07 = st.
To convert milligrams to stone, multiply your value in milligrams by 1.5747e-07. For example, 5 mg × 1.5747e-07 = 7.8737e-07 st.
100 milligrams = 1.5747e-05 stone. Calculation: 100 × 1.5747e-07 = 1.5747e-05.
To convert stone back to milligrams, divide by 1.5747e-07 (or multiply by 6,350,290). Example: 10 st ÷ 1.5747e-07 = 63,502,900 mg.
Yes. This converter uses the internationally recognised exact conversion factor: 1 mg = 1.5747e-07 st. All calculations are performed in your browser with no rounding until display.
10 milligrams = 1.5747e-06 stone. Simply multiply by 1.5747e-07.
Converting milligrams to stone is commonly needed for medical dosing, laboratory measurements, pharmaceutical calculations, and quality control testing where one system uses mg and another uses st.
The milligram (mg) is a unit of mass equal to one-thousandth of a gram (0.001 g) or one-millionth of a kilogram (10⁻⁶ kg). It is the standard unit for drug dosing in medicine and pharmacology, where precise small quantities are critical for safety and efficacy. The prefix "milli-" comes from Latin mille meaning one thousand.
The stone (st) is a British imperial unit of mass equal to exactly 14 avoirdupois pounds or 6.35029318 kilograms. Used almost exclusively in the United Kingdom and Ireland for human body weight, it has no role in scientific, commercial, or international contexts. The stone is not an SI unit and was removed from official UK trade measurement in 1985, though it remains deeply embedded in everyday British culture.
Established as a derived unit when the metric system was formalised in the late 18th century. The milligram rose to critical importance with the growth of pharmacology in the 19th and 20th centuries, as chemists isolated active compounds and found that tiny quantities produced strong therapeutic — or toxic — effects. Modern pharmacopoeias worldwide specify drug doses in milligrams.
Interesting fact: A single grain of table salt weighs about 58 mg. One standard 325 mg aspirin tablet means that 1,000 tablets weigh only 325 grams — less than a can of soft drink.
One of the oldest English weight units, the stone was referenced as early as the 13th century. Historically its value varied by commodity (8 lb for meat, 12 lb for hemp, 14 lb for wool, 16 lb for glass). King Edward III standardised the wool stone at 14 pounds in 1350, which became the universal English standard. The Weights and Measures Act 1835 formally defined the stone as 14 lb. EU harmonisation abolished the stone for trade in 1985.
Interesting fact: The world record heaviest person weighed 635 kg — exactly 100 stone, illustrating how the stone unit provides digestible reference points for large body weights. British people typically express their weight as, for example, "11 stone 4 pounds."