Assuming you are talking about US fluid ounces, there are 128 fluid ounces in one gallon, and 40% of this is 51.2 ounces.
16 ounces = one eighth (1/8) of a gallon.
One US gallon is 128 fluid ounces.
That is 192 ounces
1 US gallon = 128 fluid ounces
4 US ounces make up 0.03125 US gallons. In contrast, 1 US gallon is equal to exactly 128 US ounces.
160 ounces
128 fluid ounces = one US gallon.
There are no gallons in ounces. However one Imp gallon weighs approximately 10 pounds or 160 ounces. One USG is approximately 8.35 pounds.
16 ounces makes one pint. There are 8 pints in one gallon. So, it takes 8 cans to make one gallon.
There are 64 fluid ounces in one half gallon.
Use 1.28 fluid ounces in one gallon.