Gallons To Ounces Conversion

How many ounces in a gallon ? If the conversion is from U.S. fluid gallons to ounces then there are 128 ounces in a gallon. But gallons and ounces are commonly used volume units in a few different measurement systems and the result can be different as seen in the list below. The mostly converted numbers are added into the conversion table at the end of the page but for anything else there is also a converter (javascript must be enabled) to convert other values.

1 Gallon [Fluid, US] = 128 Ounces [Fluid, US]

1 Gallon [Dry, US] = 148.9468 Ounces [Fluid, US]

1 Gallon [UK] = 160 Ounces [UK]

For fl oz to gallon converter, please go to fl oz to gallon

For other volume unit conversions, please go to Volume Conversion

Gallon is unit of volume in imperial and U.S. customary systems. After the metric system is adapted, many countries replaced it with liter. In u.s. customary system, there are two types of gallons (fluid and dry) and they are different in sizes, in imperial system there is only one type gallon. It's commonly used unit of volume such as measuring the fuel efficiency as miles per gallon, etc. The abbreviation is "gal".

Fluid ounce is an imperial and U.S. customary volume unit. Fluid ounces are volume units and should not be mistaken with ounces which is mass (weight) unit. The abbreviation is "fl oz".