What is the capacity of a 40 lb propane cylinder?

A 40 lb propane cylinder typically has a capacity of approximately 9.2 US gallons of liquid propane. This is based on the fact that propane has a specific weight of about 4.24 lbs per gallon. By taking the weight of the propane cylinder, which is 40 lbs, and dividing it by the weight per gallon, you arrive at this volume.

It's important to understand that the volume of propane in a cylinder refers to the amount of liquid propane it can hold, which is different from the weight of propane. The 9.2 gallons is a standard figure for a 40 lb cylinder, making it a reliable source for calculations related to fuel supply, consumption, and safety measures in propane use.