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How many pounds does a gallon of water weigh?

Question #2796. Asked by steve.

Answer has 17 votes
Currently Best Answer
17 year member
317 replies

Answer has 17 votes.

Currently voted the best answer.
One U.S. gallon of pure water weighs 8.34 pounds. One Imperial gallon weighs 10.022 pounds

May 25 2000, 10:12 AM
zbeckabee star
Answer has 14 votes
zbeckabee star
18 year member
11752 replies avatar

Answer has 14 votes.
Answer has 14 votes
21 year member
4545 replies avatar

Answer has 14 votes.
Ten pounds by the original definition for an imperial gallon of eight proper pints.

The gallon was defined as the volume of distilled water weighing 10 lbs (with brass weights, of course) at 62 F (a comfortable temperature) and with the barometer at thirty inches.

Feb 12 2008, 3:27 PM
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