How much does a half of gallon of water weigh?

Answer 1

You can use 4 pounds as a rough measure. Pounds is a unit of mass/weight. Gallons is a liquid measure. They do not convert cleanly. The density of the liquid being measured can make a big difference. If the liquid is water, there is 8 pounds to a gallon.

Answer 2

Half a gallon of milk? Used motor oil? Molten candle wax?

Answer 3

It depends on what type of liquid. Plain water weighs about 4.172 pounds per half-gallon.

Answer 4

12 pounds

Answer 5

4.165 lbm