Convert Imperial Gallons to Oil Barrels
Convert Imperial Gallons (UK gal) to Oil Barrels (bbl) instantly and accurately.
Conversion Formula
bbl = UK gal × 0.02859404585
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 Oil Barrels
An oil barrel (bbl) = exactly 42 US gallons ≈ 158.99 L - established by the Pennsylvania oil industry in the 1860s and now the global petroleum standard. Global oil production, OPEC quotas, and crude spot prices are all quoted in barrels or Mb/d (millions of barrels per day); world consumption ~100 Mb/d in 2024. 'Bbl' derives from the 'blue barrel' mark on petroleum containers. 1 bbl = 42 US gal ≈ 159 L.
Quick Reference Table
| Imperial Gallons (UK gal) | Oil Barrels (bbl) |
|---|---|
| 1 UK gal | 0.028594 bbl |
| 2 UK gal | 0.0571881 bbl |
| 5 UK gal | 0.14297 bbl |
| 10 UK gal | 0.28594 bbl |
| 25 UK gal | 0.714851 bbl |
| 50 UK gal | 1.4297 bbl |
| 100 UK gal | 2.8594 bbl |