how many water bottles equal a gallon?
Simply put, a 7.57 ounce bottle equals a gallon. In the United States, a gallon contains 128 ounces of fluid. Simply put, a bottle in a US gallon is 7.57 ounces. This is 1/128 an ounce of liquid per gallon, which means 128 / 16.9 = 7.57 bottles.