Milligram to Stone Converter
1 mg = 0 st — convert instantly with formula and table.
Enter any number above and the result updates as you type. Everything runs locally in your browser, so it is instant and private.
Quick answer: one milligram equals 0.00000016 stones. So to convert milligrams to stones, multiply by 0.00000016.
How to convert milligrams to stones
stones = milligrams × 0.0000001575
The milligram — one thousandth of a gram — is the unit of medicine dosages and nutrition labels, where tiny quantities matter enormously.
The stone (14 pounds, about 6.35 kg) is the traditional British and Irish unit for body weight — someone might be "11 stone 4" rather than 158 pounds.
Milligram to Stone conversion table
| Milligram (mg) | Stone (st) |
|---|---|
| 0.01 mg | 0 st |
| 0.1 mg | 0.00000002 st |
| 0.25 mg | 0.00000004 st |
| 0.4 mg | 0.00000006 st |
| 0.75 mg | 0.00000012 st |
| 1.25 mg | 0.0000002 st |
| 1.75 mg | 0.00000028 st |
| 2.5 mg | 0.00000039 st |
| 3.5 mg | 0.00000055 st |
| 4.5 mg | 0.00000071 st |
| 6 mg | 0.00000094 st |
| 8 mg | 0.00000126 st |
| 10 mg | 0.00000157 st |
| 12 mg | 0.00000189 st |
| 14 mg | 0.0000022 st |
| 16 mg | 0.00000252 st |
| 18 mg | 0.00000283 st |
| 20 mg | 0.00000315 st |
| 24 mg | 0.00000378 st |
| 26 mg | 0.00000409 st |
| 30 mg | 0.00000472 st |
| 35 mg | 0.00000551 st |
| 45 mg | 0.00000709 st |
| 55 mg | 0.00000866 st |
| 65 mg | 0.00001024 st |
| 75 mg | 0.00001181 st |
| 85 mg | 0.00001339 st |
| 95 mg | 0.00001496 st |
| 110 mg | 0.00001732 st |
| 125 mg | 0.00001968 st |
| 175 mg | 0.00002756 st |
| 250 mg | 0.00003937 st |
| 350 mg | 0.00005512 st |
| 450 mg | 0.00007086 st |
| 600 mg | 0.00009448 st |
| 750 mg | 0.0001181 st |
| 900 mg | 0.00014173 st |
| 1,500 mg | 0.00023621 st |
| 2,500 mg | 0.00039368 st |
| 10,000 mg | 0.001575 st |
Need the opposite direction? Use the Stone to Milligram converter, or read our complete guide to weight conversions for every formula in one place.
Frequently asked questions
How many stones are in one milligram?
One milligram equals 0.00000016 stones. Multiply any milligram value by 0.00000016 to get stones.
What is 10 milligrams in stones?
10 milligrams equal 0.00000157 stones (10 × 0).
Is the milligram to stone conversion exact?
The conversion factor used here (0.0000001575) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.