Convert Fluid Drams to Gallons
Convert Fluid Drams (fl dr) to Gallons (gal) instantly and accurately.
Conversion Formula
gal = fl dr × 0.0009765625
About Fluid Drams
A fluid dram (fl dr, also 'drachm') = 1/8 fl oz ≈ 3.697 mL. Used by apothecaries for precise medicinal compounding; a fluid dram divided into 60 minims. Largely superseded by millilitres but still appears in traditional compounding recipes, older US pharmacopeias, and historical medical literature. 1 fl dr ≈ 3.697 mL.
About Gallons
A US gallon (gal) = 4 quarts = 128 fl oz ≈ 3.785 L. Gasoline, milk, water, paint, and pesticides are sold by the gallon in the US. About 20% smaller than the UK imperial gallon (4.546 L) - a critical difference when comparing fuel economy across the Atlantic. 1 US gal = 3.785 L = 4 qt = 128 fl oz.
Quick Reference Table
| Fluid Drams (fl dr) | Gallons (gal) |
|---|---|
| 1 fl dr | 0.000976563 gal |
| 2 fl dr | 0.00195313 gal |
| 5 fl dr | 0.00488281 gal |
| 10 fl dr | 0.00976563 gal |
| 25 fl dr | 0.0244141 gal |
| 50 fl dr | 0.0488281 gal |
| 100 fl dr | 0.0976563 gal |