Answer: 1 gal(UK) = 159.999 fl oz(UK)
128 ounces in a gallon.
One gallon = 128 ounces.
128 US ounces = 1 US gallon
1 US gallon = 128 fluid ounces
That is 1,536 ounces.
1 gallon = 128 fluid ounces 1/2 gallon = 64 fluid ounces
There are 8 imperial pints in an imperial (British) gallon. An imperial pint is 20 ounces and an imperial gallon is 160 ounces. A US pint is 16 US ounces, so there are approximately 10 US pints in a British gallon (a US ounce is slightly larger than an imperial ounce; 1 US ounce = 1.041 imperial ounce approximately).
A US gallon is 128 ounces
128 fluid ounces per gallon.
32 ounces to a quart 4 quarts to a gallon therefore 128 ounces to a gallon
128 ounces
128 oz in a gallon