Convert Apothecary Drams to Slugs
Convert Apothecary Drams (dr ap) to Slugs (slug) instantly and accurately.
Conversion Formula
slug = dr ap × 0.0002664081443
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 Slugs
A slug is a unit of mass in the British imperial and US customary foot-pound-second (FPS) engineering system, equal to the mass that accelerates at 1 foot per second squared under a force of 1 pound-force - approximately 14.594 kg. The slug was introduced to simplify dynamics calculations in engineering: using slugs ensures that F = ma holds without unit conversion factors when force is in pounds-force and acceleration in ft/s². Aerospace engineers and mechanical engineers working in US customary units use slugs for aircraft mass, structural dynamics, and ballistic calculations.
Quick Reference Table
| Apothecary Drams (dr ap) | Slugs (slug) |
|---|---|
| 1 dr ap | 0.000266408 slug |
| 2 dr ap | 0.000532816 slug |
| 5 dr ap | 0.00133204 slug |
| 10 dr ap | 0.00266408 slug |
| 25 dr ap | 0.0066602 slug |
| 50 dr ap | 0.0133204 slug |
| 100 dr ap | 0.0266408 slug |