Convert US gallon (gal) (gal) to Barrel (oil, bbl) (bbl)
Category: Volume
1 gal = 0.02381 bbl
High-precision rounding: 6 decimals
How to convert us gallon (gal) to barrel (oil, bbl)
We convert by pivoting through the SI base unit for Volume and applying exact factors where applicable.
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Quick conversion table
Handy values for US gallon (gal) → Barrel (oil, bbl). Click a value to open that exact result.
Conversion formula
Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).
Common mistakes
- Mixing US gallons (3.785 L) with Imperial gallons (4.546 L).
- Assuming kitchen ‘cup’ equals the same volume in every country.
Unit facts
- US gallon (gal): The US gallon is exactly 3.785411784 L; used for fuel, beverages, and bulk liquids.
- Barrel (oil, bbl): A petroleum barrel (bbl) is ≈158.9873 L; standard in the oil industry.
About Volume
Volume measures the space a substance occupies. SI uses cubic meters and liters; customary units like gallons, quarts, and pints persist in recipes, fuel, and containers. Accurate volume work often requires temperature and density considerations (e.g., for fuels).
About US gallon (gal)
US gallon (gal)
Exactly 3.785411784 L. Used for fuel, containers, and recipes in the US. Beware of imperial gallon differences.
History: US defined the gallon separately from the British imperial revision; modern value is exact.
About Barrel (oil, bbl)
Barrel (oil, bbl)
≈ 158.987 L. Benchmark unit in petroleum markets and production statistics.
History: Standardized by the oil industry; the blue 42-gallon barrel (US) became iconic in the early oil boom.