convert gallon to ounces
If the conversion is from U.S. fluid gallons to ounces then there are 128 ounces in a gallon.The commonly converted numbers and the results can be found in the conversion table at the end of the page but for anything else please use the converter below. 1 Gallon [Fluid, US] = 128 Ounces [Fluid, US].he commonly converted numbers and the results can be found in the conversion table at the end of the page but for anything else please use the converter below. 1 Gallon [Fluid, US] = 128 Ounces [Fluid, US].