Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 gal(UK) | 2.85941e-05 bbl | |
| 0.01 gal(UK) | 0.000285941 bbl | |
| 0.1 gal(UK) | 0.00285941 bbl | |
| 1 gal(UK) | 0.0285941 bbl | |
| 5 gal(UK) | 0.14297 bbl | |
| 10 gal(UK) | 0.285941 bbl | |
| 50 gal(UK) | 1.4297 bbl | |
| 100 gal(UK) | 2.85941 bbl | |
| 1000 gal(UK) | 28.5941 bbl |
Common uk gallon values converted to oil barrel — factor: 1 gal(UK) = 0.02859 bbl
| UK Gallon (gal(UK)) | Oil Barrel (bbl) | Context |
|---|---|---|
| 0.0065 gal(UK) | 0.0001859 bbl | Tablespoon |
| 0.025 gal(UK) | 0.0007149 bbl | Quarter cup |
| 0.05 gal(UK) | 0.00143 bbl | Cup |
| 0.125 gal(UK) | 0.003574 bbl | UK pint |
| 0.25 gal(UK) | 0.007149 bbl | UK quart |
| 0.5 gal(UK) | 0.0143 bbl | Half UK gallon |
| 1 gal(UK) | 0.02859 bbl | UK gallon |
| 2 gal(UK) | 0.05719 bbl | Two UK gallons |
| 5 gal(UK) | 0.143 bbl | Jerrycan |
| 10 gal(UK) | 0.2859 bbl | 10-gallon drum |
| 20 gal(UK) | 0.5719 bbl | 20-gallon tank |
| 35 gal(UK) | 1.001 bbl | UK oil barrel |
| 55 gal(UK) | 1.573 bbl | Drum barrel |
| 100 gal(UK) | 2.859 bbl | Large drum |
| 1,000 gal(UK) | 28.59 bbl | Tank |
Converting uk gallon to oil barrel comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using oil barrel, or a laboratory protocol may specify volumes in uk gallon that need to be measured with equipment calibrated in oil barrel.
In everyday use, knowing that 5 gal(UK) = 0.143 bbl and 10 gal(UK) = 0.2859 bbl covers most common situations. For bulk calculations, 100 gal(UK) = 2.859 bbl is a useful anchor. The reverse conversion — oil barrel back to uk gallon — uses the factor 34.97, so 1 bbl = 34.97 gal(UK).
All conversions use the internationally recognized factor of exactly 1 gal(UK) = 0.02859 bbl. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: Oil Barrel = UK Gallon × 0.028594099
Multiply any uk gallon value by 0.028594099 to get oil barrel. One uk gallon equals 0.028594099 bbl.
Reverse: UK Gallon = Oil Barrel × 34.972251
1 gal(UK) = 0.028594099 bbl. Memorize this for instant mental estimates.
Use 0.0286 as a quick mental factor. Multiply your UK gallons value by this to estimate oil barrels.
To verify: multiply your result by 34.972251 to recover the original gal(UK) value.
Calculates fuel economy in miles per Imperial gallon, the standard UK efficiency metric.
Orders bulk beer kegs rated in Imperial gallons and reconciles against pint servings.
Applies pesticides at rates specified in Imperial gallons per acre in legacy manuals.
Calculates boat fuel range using Imperial gallons for UK coastal navigation.
Converts UK heating oil deliveries between Imperial gallons and liters for EU reports.
References older British Pharmacopoeia formulations using Imperial gallon quantities.
The Imperial gallon was defined by the British Weights and Measures Act of 1824 as the volume of ten pounds of water at 62°F, later fixed to exactly 4.54609 liters in 1985.
UK gallons are still used in Britain for fuel pricing. Road signs show consumption in miles per Imperial gallon, making UK cars appear more fuel-efficient than identical US models.
Interesting fact: 1 Imperial gallon = 1.20095 US gallons. Confusing the two has caused real-world errors in cross-border fuel cost calculations.
The US oil barrel (bbl) is defined as exactly 42 US gallons, equal to 158.987 liters. The 42-gallon standard was adopted by the Pennsylvania oil industry in 1866, based on the wine tierce barrel.
Oil barrels are the global benchmark for crude oil pricing: NYMEX WTI and ICE Brent futures are quoted in USD per barrel. OPEC quotas and national reserves are all expressed in barrels per day.
Interesting fact: No physical barrels are used to ship crude oil today. The unit is purely a pricing and accounting convention; tankers carry millions of barrels in sealed tanks.