Gallon (US) to Barrel (Oil) Converter

Volume Converter

40 units available

Decimals:

From

To

0.02381

1 gal = 0.02381 bbl

Formula:

bbl = gal × 0.0238095238

With your value: 1 gal = 0.02380952 bbl

How big is that?

Everyday references on a logarithmic scale, all expressed in gallon (us) so you can sanity-check the result.

Milk carton (1/3.8e+3 your value)0.000264 gal

Kitchen bucket (1/3.8e+2 your value)0.00264 gal

Car fuel tank (1/76 your value)0.0132 gal

Bathtub (1/19 your value)0.0528 gal

Hot tub (1/2.5 your value)0.396 gal

Your value1.00 gal

Other Gallon (US) to Barrel (Oil) conversions

2 gal to bbl 3 gal to bbl 4 gal to bbl 5 gal to bbl 6 gal to bbl 7 gal to bbl 8 gal to bbl

Gallon (US) to Barrel (Oil) Conversion Table

Gallon (US) (gal)	Barrel (Oil) (bbl)
0.5	0.011905
1	0.02381
2	0.047619
5	0.119048
10	0.238095
15	0.357143
20	0.47619
25	0.595238
50	1.190476
100	2.380952
250	5.952381
500	11.904762
1000	23.809524

Barrel (Oil) to Gallon (US) Conversion Table

Barrel (Oil) (bbl)	Gallon (US) (gal)
0.5	21
1	42
2	84
5	210
10	420
15	630
20	840
25	1,050
50	2,100
100	4,200
250	10,500
500	21,000
1000	42,000

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Gallon (US) (gal)

Volume

Exact conversion

The US liquid gallon is exactly 231 cubic inches = 3.785 411 784 L.

Source: NIST Handbook 44, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Barrel (Oil) (bbl)

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Gallon (US) to Barrel (Oil)

To convert from Gallon (US) (gal) to Barrel (Oil) (bbl), multiply the value by 0.0238095238.

Formula: bbl = gal × 0.0238095238

Reverse: gal = bbl × 42

Step-by-Step Example

Start with your value in Gallon (US). For example: 5 gal
Multiply by the conversion factor: 5 x 0.0238095238
The result is: 0.119048 bbl

About Gallon (US)

The US gallon equals approximately 3.785 liters and is the standard unit for fuel and large liquid volumes in the United States.

Fun Fact: The US gallon is about 20% smaller than the imperial (UK) gallon.

Common uses: fuel (US), beverages, swimming pools.

About Barrel (Oil)

The oil barrel equals 42 US gallons (about 158.987 litres) and is the global pricing unit for crude petroleum.

Fun Fact: The 42-gallon standard dates to the 1860s Pennsylvania oil rush.

Common uses: crude oil pricing, energy statistics.

Frequently Asked Questions

How many Barrel (Oil) are in 1 Gallon (US)?

There are exactly 0.0238095238 Barrel (Oil) in 1 Gallon (US). This means the conversion factor from Gallon (US) to Barrel (Oil) is 0.0238095238.

What is the formula to convert Gallon (US) to Barrel (Oil)?

The formula to convert Gallon (US) to Barrel (Oil) is: bbl = gal × 0.0238095238. For example, to convert 10 Gallon (US) to Barrel (Oil), you would multiply 10 by 0.0238095238.

What is a Gallon (US)?