How do you convert pounds of propane to gallons of propane?

I think that the correct answer is technically neener neener neener or Right, Sphix, thanks for the riddle. In other words, there is no right answer to this question. Pounds is a weight measure and...

Commercial propane weighs about 3.696 lbs per gallon. So a 25 lb tank would be around 6.764 gallons.

1 gallon = 4.2 lbs33lbs / 4.2lbs = 7.86 gallons

1 pound of propane is a little less than 1/4 of a gallon.

A 20 pound 'BBQ tank' will contain approx. 4.7 gallons of LPG