Barrel to Gallon Converter
Convert between oil barrels, US gallons, liters, cubic meters, and cubic feet instantly. Includes BOE (barrel of oil equivalent) conversions.
Volume Converter
1 bbl = 42 US gallons
Result
42.0000 gal
All Equivalent Values
Barrels
1.0000
US Gallons
42.0000
Liters
158.9873
Cubic Meters
0.1590
Cubic Feet
5.6146
Barrel of Oil Equivalent (BOE)
1 BOE = 5.8 million BTU = 6,000 cubic feet of natural gas (6 Mcf)
BOE
1.0000
Mcf Gas Equiv.
6.0000
MMBtu
5.8000
Quick Reference
About oil barrel conversions
The standard petroleum barrel (bbl) contains exactly 42 US gallons. This unit was adopted by the petroleum industry in 1866 and standardized by the American Petroleum Institute. The abbreviation "bbl" stands for "blue barrel," referring to the blue-painted barrels used by Standard Oil to distinguish them from barrels of other goods.
A Barrel of Oil Equivalent (BOE) is an energy unit that approximates the energy released by burning one barrel of crude oil. It is commonly used to compare natural gas to oil: 1 BOE ~ 6,000 cubic feet (6 Mcf) of natural gas ~ 5.8 million BTU.
Need help with production data analysis, reserves estimation, or AI-driven analytics for your operations?
Book a free strategy call →How to Convert Barrels to Gallons
To convert barrels to gallons, multiply the number of barrels by 42. One US petroleum barrel equals exactly 42 US gallons, 158.987 liters, 0.158987 cubic meters, or 5.6146 cubic feet. This conversion factor is the industry standard set by the American Petroleum Institute (API).
For example, 10 barrels = 10 × 42 = 420 US gallons. To convert gallons to barrels, divide gallons by 42. So 1,000 gallons = 1,000 ÷ 42 = 23.81 barrels.
The Barrel of Oil Equivalent (BOE) is an energy-based unit used to compare different fuels. One BOE contains approximately 5.8 million BTU of energy, which is roughly equivalent to 6,000 cubic feet (6 Mcf) of natural gas. This ratio is widely used in reserves reporting and economic analysis.
All calculations run entirely in your browser. Built by Groundwork Analytics, an AI and engineering company that builds digital tools and deploys AI agents for the energy industry. Get in touch or email us at info@petropt.com.