Convert US liquid gallons into fluid ounces (fl oz) and cups.
Fluid Ounces (fl oz)128
Cups16
US Liquid Volume
The US customary system uses gallons, quarts, pints, cups, and fluid ounces for liquid volume. Note that US fluid ounces are different from the UK Imperial fluid ounces.
The Ratio
There are exactly 128 US fluid ounces in one US liquid gallon. There are also 16 cups in a gallon.
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