Gallon (UK) to Barrel (UK) Converter

Volume Converter

40 units available

Decimals:

From

To

0.027778

1 gal (UK) = 0.027778 bbl (UK)

Formula:

bbl (UK) = gal (UK) × 0.0277777778

With your value: 1 gal (UK) = 0.02777778 bbl (UK)

How big is that?

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

Milk carton (1/4.5e+3 your value)0.000220 gal (UK)

Kitchen bucket (1/4.5e+2 your value)0.00220 gal (UK)

Car fuel tank (1/91 your value)0.0110 gal (UK)

Bathtub (1/23 your value)0.0440 gal (UK)

Hot tub (1/3.0 your value)0.330 gal (UK)

Your value1.00 gal (UK)

Other Gallon (UK) to Barrel (UK) conversions

2 gal (UK) to bbl (UK)3 gal (UK) to bbl (UK)4 gal (UK) to bbl (UK)5 gal (UK) to bbl (UK)6 gal (UK) to bbl (UK)7 gal (UK) to bbl (UK)8 gal (UK) to bbl (UK)

Gallon (UK) to Barrel (UK) Conversion Table

Gallon (UK) (gal (UK))	Barrel (UK) (bbl (UK))
0.5	0.013889
1	0.027778
2	0.055556
5	0.138889
10	0.277778
15	0.416667
20	0.555556
25	0.694444
50	1.388889
100	2.777778
250	6.944444
500	13.888889
1000	27.777778

Barrel (UK) to Gallon (UK) Conversion Table

Barrel (UK) (bbl (UK))	Gallon (UK) (gal (UK))
0.5	18
1	36
2	72
5	180
10	360
15	540
20	720
25	900
50	1,800
100	3,600
250	9,000
500	18,000
1000	36,000

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 (UK) (gal (UK))

Volume

Exact conversion

The imperial gallon is exactly 4.546 09 L (Weights and Measures Act 1985).

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 (UK) (bbl (UK))

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 (UK) to Barrel (UK)

To convert from Gallon (UK) (gal (UK)) to Barrel (UK) (bbl (UK)), multiply the value by 0.0277777778.

Formula: bbl (UK) = gal (UK) × 0.0277777778

Reverse: gal (UK) = bbl (UK) × 36

Step-by-Step Example

Start with your value in Gallon (UK). For example: 5 gal (UK)
Multiply by the conversion factor: 5 x 0.0277777778
The result is: 0.138889 bbl (UK)

About Gallon (UK)

The imperial gallon equals exactly 4.54609 litres, about 20% larger than the US gallon — a frequent source of fuel-economy confusion.

Common uses: UK fuel figures, brewing, older recipes.

About Barrel (UK)

The barrel (uk) (bbl (UK)) is a unit of volume and capacity. One barrel (uk) equals 163.65924 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: volume calculations, engineering and science, education.

Frequently Asked Questions

How many Barrel (UK) are in 1 Gallon (UK)?

There are exactly 0.0277777778 Barrel (UK) in 1 Gallon (UK). This means the conversion factor from Gallon (UK) to Barrel (UK) is 0.0277777778.

What is the formula to convert Gallon (UK) to Barrel (UK)?

The formula to convert Gallon (UK) to Barrel (UK) is: bbl (UK) = gal (UK) × 0.0277777778. For example, to convert 10 Gallon (UK) to Barrel (UK), you would multiply 10 by 0.0277777778.

What is a Gallon (UK)?