How much does a gallon of water weigh?!

Question: How much does a gallon of water weigh?

Best Answer - Chosen by Voters

a gallon of water weigh 8.33 pounds,3.785L

We need to know temperature (T) and pressure (P) so we can get an accurate measure of density.

Assuming 1atm and 277.15K (4C) then density = 1000kg/m^3 = 1kg/dm^3

1gallon = 4.55litres

m = density*V = 1*4.55 = 4.55kg

W = mg = 4.55*9.81 = 44.63N

edit: wtf? three TD for giving a decent answer. At least I used the correct units.

weight is a FORCE not a MASS

1 gallon of water weighs 8.33 pounds

Drilling fluid engineer.

I think somewhere between 8 and 10 pounds roughly

if you said the amount of litters i could answer

It will be about 10pound

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