Gallon (UK) to Fluid ounce Conversion Calculator: Free Online Tool
Convert UK gallons to fluid ounces with our free online volume converter.
Gallon (UK) to Fluid ounce Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Gallon (UK)).
- The converted value in Fluid ounce will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Volume category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Gallon (UK) to Fluid ounce
Converting Gallon (UK) to Fluid ounce involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Gallon (UK) = 153.7216 fluid ouncesExample Calculation:
Convert 10 UK gallons: 10 × 153.7216 = 1537.216 fluid ounces
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Gallon (UK) and a Fluid ounce?
The UK gallon (Imperial gallon) is a unit of volume defined as 4.54609 litres.
The fluid ounce is a unit of volume. The US fluid ounce is defined as 1/128 of a US gallon (approx. 29.57 ml). The Imperial fluid ounce is 1/160 of an Imperial gallon (approx. 28.41 ml).
Note: The Gallon (UK) is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Fluid ounce belongs to the imperial/US customary system.
History of the Gallon (UK) and Fluid ounce
The Imperial gallon was defined based on the volume of 10 pounds of distilled water weighed in air with brass weights with the barometer standing at 30 inches of mercury and at a temperature of 62 °F.
Derived from the ounce unit of weight/mass, adapted to measure the volume of liquids like wine or water.
Common Uses for UK gallons and fluid ounces
Explore the typical applications for both Gallon (UK) (imperial/US) and Fluid ounce (imperial/US) to understand their common contexts.
Common Uses for UK gallons
- Fuel Measurement: Used for measuring fuel (petrol, diesel) in the UK and some Commonwealth countries.
- Beverages: Selling milk and other beverages in large containers in the UK.
- Household Liquids: Measuring paint and other household liquids.
- Pools & Water: Pool capacity and water usage measurements in the UK.
- Industry: Some industrial applications in countries using the Imperial system.
Common Uses for fluid ounces
- Beverages: Measuring alcoholic drinks, soft drinks, and coffee servings.
- Cooking: Recipe measurements for smaller liquid ingredients.
- Medicine: Liquid medication dosages on prescription labels.
- Personal Care: Volumes of cosmetics, perfumes, and essential oils.
- Nutrition Labels: Serving sizes on food and beverage packaging.
Frequently Asked Questions
Questions About Gallon (UK) (gal)
Is a UK gallon the same as a US gallon?
No, the UK (Imperial) gallon is defined as 4.54609 liters, while the US liquid gallon is defined as 3.785411784 liters. The UK gallon is approximately 20% larger than the US gallon.
How many pints are in a UK gallon?
There are exactly 8 Imperial pints in 1 UK (Imperial) gallon. This is the same number as in the US system, but since the Imperial pint is larger than the US pint, the total volume differs.
When did the UK adopt the Imperial gallon?
The Imperial gallon was established in 1824 as part of the British Weights and Measures Act, which standardized various units throughout the British Empire. Prior to this standardization, several different gallon measures were in use for different purposes.
About Fluid ounce (fl oz)
Is a US fluid ounce the same as a UK fluid ounce?
No, the Imperial (UK) fluid ounce is slightly smaller than the US fluid ounce (approximately 28.41 ml vs 29.57 ml).
Is a fluid ounce the same as a weight ounce?
No, a fluid ounce measures volume (the space something occupies), while a weight ounce (specifically an avoirdupois ounce) measures mass (how much matter it contains). The relationship between the two depends entirely on the density of the substance being measured. For water, 1 US fluid ounce weighs approximately 1.04 avoirdupois ounces.
Conversion Table: Gallon (UK) to Fluid ounce
| Gallon (UK) (gal) | Fluid ounce (fl oz) |
|---|---|
| 1 | 153.722 |
| 5 | 768.608 |
| 10 | 1,537.216 |
| 25 | 3,843.04 |
| 50 | 7,686.08 |
| 100 | 15,372.159 |
| 500 | 76,860.795 |
| 1,000 | 153,721.59 |