How much does one UK gallon of water weigh?

Answer:

4,54609188 kilograms
There are 4,54609188 litres in an imperial gallon, one litre of water weighs 1 kilogram.

First answer by Chumchumthegreat. Last edit by Chumchumthegreat. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 1 [recommend question].