Convert Apothecary Ounces to Slugs
Convert Apothecary Ounces (oz ap) to Slugs (slug) instantly and accurately.
Conversion Formula
slug = oz ap × 0.002131265155
About Apothecary Ounces
An apothecary ounce (oz ap) is identical in mass to the troy ounce - approximately 31.10 grams - and equals 8 apothecary drams or 480 grains. It was the standard ounce used by pharmacists and physicians across Europe and North America from medieval times until the 20th century. Although the apothecary system has been replaced by SI units in modern medicine, the apothecary ounce still appears in historical pharmacopeias, traditional herbal medicine texts, and some compounding pharmacy references.
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 Ounces (oz ap) | Slugs (slug) |
|---|---|
| 1 oz ap | 0.00213127 slug |
| 2 oz ap | 0.00426253 slug |
| 5 oz ap | 0.0106563 slug |
| 10 oz ap | 0.0213127 slug |
| 25 oz ap | 0.0532816 slug |
| 50 oz ap | 0.106563 slug |
| 100 oz ap | 0.213127 slug |