Barrel (Oil) to Gallon (US) Converter
Unit Converter
Instant · Precise · Universal
47 units available
6 categories total
How to Convert Barrel (Oil) to Gallon (US)
To liters: multiply by 158.987. To US gallons: multiply by 42. To cubic meters: multiply by 0.158987.
1 oil barrel = 42 US gal = 158.987 L = 34.97 UK gal = 5,376 US fl oz.
For example, 1 Barrel (Oil) (bbl (oil)) = 42 Gallon (US) (gal (US)).
Barrel (Oil) to Gallon (US) — Common Values
| Barrel (Oil) (bbl (oil)) | Gallon (US) (gal (US)) |
|---|---|
| 0.1 | 4.2 |
| 0.5 | 21 |
| 1 | 42 |
| 2 | 84 |
| 5 | 210 |
| 10 | 420 |
| 25 | 1050 |
| 50 | 2100 |
| 100 | 4200 |
| 500 | 21000 |
| 1000 | 42000 |
About Barrel (Oil) (bbl (oil))
Definition
The oil barrel is a unit of volume equal to 42 US gallons (approximately 158.987 liters), the standard for measuring crude oil and petroleum products.
Mathematical Relationship
1 oil barrel = 42 US gal = 158.987 L = 34.97 UK gal = 5,376 US fl oz.
Conversion Formula
To liters: multiply by 158.987. To US gallons: multiply by 42. To cubic meters: multiply by 0.158987.
Practical Applications
Crude oil trading and pricing, refinery throughput, national oil production statistics, and petroleum reserve reporting.
Interesting Facts
Global oil consumption is about 100 million barrels per day. Oil is no longer actually shipped in barrels — the unit persists purely as a standard of measurement.
Common Mistakes
Confusing the oil barrel (42 gal) with the US liquid barrel (31.5 gal). Always use 'bbl (oil)' or specify the type.
Educational Tips
Oil is priced per barrel (~42 gallons). When you see '$70/barrel,' that means about $1.67/gallon before refining and distribution costs.
About Gallon (US) (gal (US))
Definition
The US gallon is a unit of volume equal to 128 US fluid ounces, or approximately 3.785 liters, used for large liquid volumes.
Mathematical Relationship
1 US gal = 4 US qt = 8 US pt = 16 US cups = 128 US fl oz = 3.785411784 L.
Conversion Formula
To liters: multiply by 3.785. To UK gallons: multiply by 0.832674. To cubic meters: multiply by 0.003785.
Practical Applications
Fuel prices ($/gal), milk jugs, water cooler bottles, swimming pool chemicals, and paint quantities.
Interesting Facts
The US gallon is smaller than the UK gallon: 3.785 L vs. 4.546 L. This means UK fuel economy figures look better by number!
Common Mistakes
Confusing US and UK gallons — UK gallons are 20% larger. Fuel economy (mpg) differs significantly between the two systems.
Educational Tips
1 gallon ≈ 3.8 liters ≈ a large milk jug. 4 quarts = 1 gallon. A gallon of water weighs about 8.3 pounds.