1 gallon = 0.13368 cubic foot (rounded), regardless of what is or isn't in it.
1 gallon equals 1 gallon.
1
4.8038
12
Four quarts equals one gallon.
2
4 quarts
3.78 liters
1 US gallon = 128 fluid ounces
32 half pints makes one gallon
One half gallon is equal to 2 quarts.
Two x half gallon cartons is equal to one gallon.