Convert Scruples to Pounds
Convert Scruples (s ap) to Pounds (lb) instantly and accurately.
Conversion Formula
lb = s ap × 0.002857142857
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.
About Pounds
The avoirdupois pound (lb) is the primary unit of weight in the United States and United Kingdom for everyday use, equal to 16 ounces or exactly 453.59237 grams. It dominates American life: body weight, grocery produce, deli counter cuts, freight shipping costs, gym weights, and building material quantities are all measured in pounds and ounces. American recipes use pounds for meat and large quantities. The pound derives from the Roman 'libra pondo' (a pound by weight) - hence both the symbol 'lb' (from libra) and the British currency symbol '£'.
Quick Reference Table
| Scruples (s ap) | Pounds (lb) |
|---|---|
| 1 s ap | 0.00285714 lb |
| 2 s ap | 0.00571429 lb |
| 5 s ap | 0.0142857 lb |
| 10 s ap | 0.0285714 lb |
| 25 s ap | 0.0714286 lb |
| 50 s ap | 0.142857 lb |
| 100 s ap | 0.285714 lb |