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Convert imperial gallon to US fluid ounce

Here you can quickly calculate how many US fluid ounce fit in one imperial gallon.
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  • 1 gal (uk) = 153.72159 fl oz
  • 1 fl oz = 0.006505 gal (uk)

Example: imperial gallon to US fluid ounce

  • 1 Imperial gallon = 153.72159 US fluid ounce

Imperial gallon to US fluid ounce conversion table

Imperial gallon US fluid ounce
1 153.72159
2 307.443181
5 768.607952
10 1537.215905
20 3074.431809
50 7686.079523
100 15372.159046

Imperial gallon to US fluid ounce formula

To convert imperial gallon to US fluid ounce, multiply by 153.72159.

1 gal (uk) = 153.72159 fl oz
Example: 1 Imperial gallon = 153.72159 US fluid ounce

Common volume conversion mistakes

  • 'Gallon' names two different measures: the US gallon is about 3.785 liters and the imperial gallon about 4.546 liters, a full 20% larger. US fuel figures and UK recipes therefore use different gallons. Always check the country before converting.
  • A fluid ounce measures volume, not weight. The US fl oz is about 29.57 ml and the imperial fl oz about 28.41 ml, and neither matches the weight ounce (28.35 g) except roughly for water. Measure liquids in milliliters to avoid the ambiguity.

Quick imperial gallon and US fluid ounce conversion quiz

Score: 0

140 imperial gallon equals 12 900 US fluid ounce.

Correct answer: 140 imperial gallon = 21 500 US fluid ounce.

230 imperial gallon equals 35 400 US fluid ounce.

Correct answer: 230 imperial gallon = 35 400 US fluid ounce.

12.5 imperial gallon equals 2 880 US fluid ounce.

Correct answer: 12.5 imperial gallon = 1 920 US fluid ounce.

19.4 US fluid ounce equals 0.126 imperial gallon.

Correct answer: 19.4 US fluid ounce = 0.126 imperial gallon.

14.3 imperial gallon equals 2 200 US fluid ounce.

Correct answer: 14.3 imperial gallon = 2 200 US fluid ounce.

More volume conversions