In a 30-pound tank there will be approximately 7.1 gallons of liquid propane. Liquid propane weighs around 4.2 pounds per gallon. Therefore dividing the 30 pounds of weight in the tank by 4.2 will give the result of how many gallons this is equivalent to. This weight can vary depending on the pressure that is enforced on the propane but a calculated estimation gives the result 7.1 gallons.

While it is difficult to give an exact and accurate calculation for the amount of gallon of propane in a 30 pound tank, using general calculations an answer of 7.1 gallons can be produced.

- Propane properties.

- Propane uses.

While it is difficult to give an exact and accurate calculation for the amount of gallon of propane in a 30 pound tank, using general calculations an answer of 7.1 gallons can be produced.