Gallons to Ounces Converter
Convert US liquid gallons into fluid ounces (fl oz) and cups.
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.
Disclaimer: This calculator is for educational and learning purposes only. While we strive for accuracy, calculations are provided "as-is" without warranty. The accuracy of results depends on the accuracy of input data provided. Always verify important calculations independently. For critical applications or when accuracy is essential, consult with appropriate professionals or use verified reference sources. Educational calculators may contain rounding or approximations.