That depends on what's in the gallon. -- 1 gallon of air weighs about 0.02 pound. -- 1 gallon of water weighs about 8.4 pounds. -- 1 gallon of gold weighs about 160 pounds. -- If the gallon is empty,...
Well a pint of milk weighs 20 ounces.There are 8 pints in a gallon 8x16 =160 ounces. That makes 1 gallon equal to 10 pounds.
1 pound of milk weighs 1/10 of a gallon.
Hope it helps!