Convert Scruples to Catties
Convert Scruples (s ap) to Catties (catty) instantly and accurately.
Conversion Formula
catty = s ap × 0.002145659272
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 Catties
The catty (also jin 斤 in Chinese) is a traditional unit of mass used across East and Southeast Asia, equal to 600 grams in its modern metric form. It was historically the standard unit of trade for goods at markets throughout China, Japan, Korea, and Southeast Asia for over a thousand years. Today the catty remains widely used in Chinese, Vietnamese, Malaysian, and Singaporean wet markets and grocery stores for weighing vegetables, meat, and fish. In Hong Kong, the catty (斤) is precisely 604.79 grams; in mainland China it is exactly 500 grams (half a kilogram).
Quick Reference Table
| Scruples (s ap) | Catties (catty) |
|---|---|
| 1 s ap | 0.00214566 catty |
| 2 s ap | 0.00429132 catty |
| 5 s ap | 0.0107283 catty |
| 10 s ap | 0.0214566 catty |
| 25 s ap | 0.0536415 catty |
| 50 s ap | 0.107283 catty |
| 100 s ap | 0.214566 catty |