How much does one gallon of water weigh?

Answer:

Weight of 1 US Gallon of water = approx. 8.35 lb

Weight of 1 imperial gallon (eg UK measure) of water weighs 10 pounds by definition, at a specified temperature and pressure.

Note: There are comments associated with this question. See the discussion page to add to the conversation.
First answer by EvilTwin373. Last edit by Mjbtnc. Contributor trust: 22 [recommend contributor recommended]. Question popularity: 279 [recommend question].