Convert Stones to Scruples
Convert Stones (st) to Scruples (s ap) instantly and accurately.
Conversion Formula
s ap = st × 4900
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.
About Scruples
A scruple (s ap) is a unit of the apothecary weight system equal to 20 grains or approximately 1.296 grams. Derived from the Latin 'scrupulus' (a small sharp stone used as a counterweight), it was the basic dispensing unit in pre-metric pharmacy across Europe. The apothecary system divided the fluid ounce into 8 drams, each dram into 3 scruples, and each scruple into 20 grains - a hierarchy memorised by every 19th-century pharmacist.
Quick Reference Table
| Stones (st) | Scruples (s ap) |
|---|---|
| 1 st | 4900 s ap |
| 2 st | 9800 s ap |
| 5 st | 24500 s ap |
| 10 st | 49000 s ap |
| 25 st | 122500 s ap |
| 50 st | 245000 s ap |
| 100 st | 490000 s ap |