Convert Apothecary Drams to Pounds
Convert Apothecary Drams (dr ap) to Pounds (lb) instantly and accurately.
Conversion Formula
lb = dr ap × 0.008571428571
About Apothecary Drams
An apothecary dram (dr ap) equals 3 scruples or 60 grains - approximately 3.888 grams. Part of the traditional apothecary system used by physicians and pharmacists from the Middle Ages through the 19th century, it was the standard unit for prescribing and dispensing medicines. Prescriptions written in the apothecary system used special symbols: the dram symbol (℈) and ounce symbol (℥) appear throughout historical medical records and old pharmacy ledgers. The apothecary dram differs from the fluid dram (a volume unit) and from the avoirdupois dram.
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
| Apothecary Drams (dr ap) | Pounds (lb) |
|---|---|
| 1 dr ap | 0.00857143 lb |
| 2 dr ap | 0.0171429 lb |
| 5 dr ap | 0.0428571 lb |
| 10 dr ap | 0.0857143 lb |
| 25 dr ap | 0.214286 lb |
| 50 dr ap | 0.428571 lb |
| 100 dr ap | 0.857143 lb |