Live Converter
Convert Liquid Measurement Online
Enter your value above to convert gallons to barrels or vice versa.
Real-World Examples
The Uses of Gallons to Barrels Conversion
A petroleum barrel is defined as exactly 42 US gallons, a standard set over a century ago that the global oil industry still uses for pricing, production, and trade.
Oil Production and Trading Reports
Energy analysts who receive production or consumption data in gallons use this conversion to express those figures in barrels, the standard unit quoted in oil market reports and prices.
Fuel Storage Tank Capacity
Facilities that store fuel or crude oil in tanks rated by the gallon use this conversion to express total storage capacity in barrels when reporting to industry regulators.
Shipping and Logistics Planning
Logistics companies transporting petroleum products calculate shipment volumes in gallons and convert to barrels, since tanker and pipeline capacity is typically quoted in barrels.
Quick Reference
Comprehensive Conversion Table
Our quick table gives you instant results, so you don't have to calculate these common values manually.
| Conversion | Formula | Result (bbl) |
|---|---|---|
| 1 gal to bbl | 1 × 0.023809523809523808 | 0.0238 bbl |
| 5 gal to bbl | 5 × 0.023809523809523808 | 0.1190 bbl |
| 10 gal to bbl | 10 × 0.023809523809523808 | 0.2381 bbl |
| 50 gal to bbl | 50 × 0.023809523809523808 | 1.1905 bbl |
| 100 gal to bbl | 100 × 0.023809523809523808 | 2.3810 bbl |
| 500 gal to bbl | 500 × 0.023809523809523808 | 11.9048 bbl |
| 1,000 gal to bbl | 1,000 × 0.023809523809523808 | 23.8095 bbl |
| 5,000 gal to bbl | 5,000 × 0.023809523809523808 | 119.0476 bbl |
| 10,000 gal to bbl | 10,000 × 0.023809523809523808 | 238.0952 bbl |
Got Questions?
Frequently Asked Questions
How many barrels are in 42 gallons?
42 gallons equals exactly 1 petroleum barrel, since the barrel is defined as precisely that many US gallons.
How many barrels are in 1,000 gallons?
1,000 gallons equals approximately 23.81 barrels, a figure commonly used when converting storage or production totals for industry reporting.
Why is a petroleum barrel exactly 42 gallons?
The 42-gallon standard was adopted by the US oil industry in the 1800s to account for wooden barrels expanding slightly and leaking during transport, and it has remained the global standard ever since.
Is this the same barrel used for beer or other liquids?
No, this is specifically the petroleum barrel at 42 US gallons. Beer barrels and other industry-specific barrels use different standard volumes.