Fluid Ounce (UK) to Gallon (UK) Converter

Volume Converter

40 units available

Decimals:

From

To

0.00625

1 fl oz (UK) = 0.00625 gal (UK)

Formula:

gal (UK) = fl oz (UK) × 0.00625

With your value: 1 fl oz (UK) = 0.00625 gal (UK)

How big is that?

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

Milk carton (1/28 your value)0.0352 fl oz (UK)

Kitchen bucket (1/2.8 your value)0.352 fl oz (UK)

Your value1.00 fl oz (UK)

Car fuel tank (1.8× your value)1.76 fl oz (UK)

Bathtub (7.0× your value)7.04 fl oz (UK)

Hot tub (53× your value)52.8 fl oz (UK)

Other Fluid Ounce (UK) to Gallon (UK) conversions

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

Fluid Ounce (UK) to Gallon (UK) Conversion Table

Fluid Ounce (UK) (fl oz (UK))	Gallon (UK) (gal (UK))
0.5	0.003125
1	0.00625
2	0.0125
5	0.03125
10	0.0625
15	0.09375
20	0.125
25	0.15625
50	0.3125
100	0.625
250	1.5625
500	3.125
1000	6.25

Gallon (UK) to Fluid Ounce (UK) Conversion Table

Gallon (UK) (gal (UK))	Fluid Ounce (UK) (fl oz (UK))
0.5	80
1	160
2	320
5	800
10	1,600
15	2,400
20	3,200
25	4,000
50	8,000
100	16,000
250	40,000
500	80,000
1000	160,000

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.

Fluid Ounce (UK) (fl oz (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

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

How to Convert Fluid Ounce (UK) to Gallon (UK)

To convert from Fluid Ounce (UK) (fl oz (UK)) to Gallon (UK) (gal (UK)), multiply the value by 0.00625.

Formula: gal (UK) = fl oz (UK) × 0.00625

Reverse: fl oz (UK) = gal (UK) × 160

Step-by-Step Example

Start with your value in Fluid Ounce (UK). For example: 5 fl oz (UK)
Multiply by the conversion factor: 5 x 0.00625
The result is: 0.03125 gal (UK)

About Fluid Ounce (UK)

The fluid ounce (uk) (fl oz (UK)) is a unit of volume and capacity. One fluid ounce (uk) equals 0.0284130625 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.

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.

Frequently Asked Questions

How many Gallon (UK) are in 1 Fluid Ounce (UK)?

There are exactly 0.00625 Gallon (UK) in 1 Fluid Ounce (UK). This means the conversion factor from Fluid Ounce (UK) to Gallon (UK) is 0.00625.

What is the formula to convert Fluid Ounce (UK) to Gallon (UK)?

The formula to convert Fluid Ounce (UK) to Gallon (UK) is: gal (UK) = fl oz (UK) × 0.00625. For example, to convert 10 Fluid Ounce (UK) to Gallon (UK), you would multiply 10 by 0.00625.

What is a Fluid Ounce (UK)?