How Many Oz Are In A Gallon. An english imperial gallon today is 1.2 us gallons or 153.6 fluid ounces which is why imperial quarts and pints are larger than their us equivalents. One quart contains about 16 ounces, so two 16.9 oz bottles would make up a quart.
A gallon contains 128 ounces. 1 gallon = 160 ounces. 1 gallon = 160 ounces (uk system) uk imperial system and the us system (a variation of the imperial system).
How many ounces are in a gallon? Quora
As stated by the imperial system, in terms of the us gallon, 1 gallon is equal to the 133.27889 fluid ounces. How many ounces is half a gallon? You can opt for water bottles that hold more. In terms of metric system, 1 gallon of water is equal to 160 fluid ounces.