Convert Scruples to Quarters
Convert Scruples (s ap) to Quarters (qr) instantly and accurately.
Conversion Formula
qr = s ap × 0.0001020408163
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 Quarters
A quarter (qr) in the avoirdupois system equals 28 pounds or one quarter of a hundredweight - approximately 12.70 kg. Historically, quarters were used in British trade for measuring grain, wool, and other bulk commodities. The British quarter of grain (28 lb) was the standard purchase quantity at markets and mills throughout medieval and early modern England. In the US, the term 'quarter' sometimes refers to a quarter of a short hundredweight (25 lb) rather than the British 28 lb.
Quick Reference Table
| Scruples (s ap) | Quarters (qr) |
|---|---|
| 1 s ap | 0.000102041 qr |
| 2 s ap | 0.000204082 qr |
| 5 s ap | 0.000510204 qr |
| 10 s ap | 0.00102041 qr |
| 25 s ap | 0.00255102 qr |
| 50 s ap | 0.00510204 qr |
| 100 s ap | 0.0102041 qr |