Convert Imperial Gallons to Fluid Drams
Convert Imperial Gallons (UK gal) to Fluid Drams (fl dr) instantly and accurately.
Conversion Formula
fl dr = UK gal × 1229.772724
About Imperial Gallons
A US imperial gallon (UK gal) = exactly 8 imperial pints or 10 lb of pure water at 62°F ≈ 4.546 L - about 20% larger than the US liquid gallon (3.785 L). The weight-based definition made it verifiable with simple scales. Still the legal fuel measure in the Cayman Islands and other British Overseas Territories. UK mpg ratings use imperial gallons: 50 UK mpg ≈ 42 US mpg. 1 UK gal ≈ 4.546 L.
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 Largely superseded by millilitres but still appears in traditional compounding recipes, older US pharmacopeias, and historical medical literature. 1 fl dr ≈ 3.697 mL.
Quick Reference Table
| Imperial Gallons (UK gal) | Fluid Drams (fl dr) |
|---|---|
| 1 UK gal | 1229.77 fl dr |
| 2 UK gal | 2459.55 fl dr |
| 5 UK gal | 6148.86 fl dr |
| 10 UK gal | 12297.7 fl dr |
| 25 UK gal | 30744.3 fl dr |
| 50 UK gal | 61488.6 fl dr |
| 100 UK gal | 122977 fl dr |