Convert 1 Gallon to Ounces
How many ounces are in 1 gallon? Volume of 1 gallon of beer. 1 gal to fl oz conversion.
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1 U.S. Gallon =
128 U.S. Fluid Ounces
exact result
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Result in Plain English
1 gallon is equal to exactly 128 ounces.
In Scientific Notation
1 gallon
= 1 x 100 gallons
= 1.28 x 102 ounces
Gallons
A U.S. gallon is a unit of volume equal to 128 U.S. fluid ounces, or about 3.785 liters. It should not be confused with the imperial gallon used in the United Kingdom.Common abbreviations: gal, US gal
Ounces
A U.S. fluid ounce is 1/128th of a U.S. gallon. It is not the same as an ounce of weight or an Imperial fluid ounce.Common abbreviations: fl oz, oz fl