Gallon is imperial measurement so there are 128 fl.oz. in a U.S. gallon.
There are 16 cups in a gallon and one cup is 8 fl.oz.
However, if you are referring to U.K. gallon then it changes.
Both have 8 pints of fluid but a U.K. pint is 20 oz and U.S. pint is 16 oz. which means a U.K. gallon is 160 fl. oz.
32
8 glasses of water a day is a gallon 64 ounces is a gallon
120 ounces
128 fluid ounces per gallon. (US)
One gallon is 128 fluid ounces.
A gallon of water weighs approximately 9 pounds. There are 128 (fluid) ounces in a gallon. There are 16 ounces in a pound. So, let's do the math. 9 x 16 = 144 ounces in nine pounds in one gallon of water. 144/128 = 1.125 ounces for each fluid ounce of water. 1.125 x 9 = 10.125 ounces. So! Nine fluid ounces of water weighs approximately 10.125 or 10 & 1/8th ounces. Probably not how my math teachers would have preferred I do that, but what can one expect from an English major?
8 glasses of water a day is a gallon 64 ounces is a gallon
120 ounces
One gallon of fresh water weighs 8.36 pounds (8 pounds 5.76 ounces)
1/2 ounce.
128 fluid ounces per gallon. (US)
1 US gallon equates to 128 US ounces. 1 Imperial gallon equates to 160 Imperial ounces.
12.8
128 ounces in one gallon.
How much of what? 1 gallon is equivalent to: 231 cubic inches 3.785 liters 0.833 British gallon 128 U.S. fluid ounces 16 cups -- Nate Ferrero
128 fluid ounces (1 gallon) of water (plain) weighs about 8.35 pounds.
One fourth of a gallon.
That is 1/2 a US gallon.