Convert US gallons to US fluid ounces
US gal
1 US gallon =
128 US fluid ounces
* exact result
Select how many decimal places the result will be rounded to:
How to convert US gallons to US fluid ounces
To convert US gallons to US fluid ounces, multiply a US gallons value by 128.
Formula US fl oz = US gal × 128
Example: Convert 2 US gallons to US fluid ounces Calculations: 2 US gal × 128 = 256 US fl oz
US gallon (US gal)
The US gallon is a US customary systems unit of volume, defined as 231 cubic inches or 128 US fluid ounces, and is equal to 3.785411784 liters. It is the standard unit for measuring volume in the United States.
US fluid ounce (US fl oz)
The US fluid ounce is a US customary systems unit of volume, defined as 1/128 of a US gallon, and is equal to 0.0295735295625 liters.