It most likely goes there is no saying, yet a 100 lb. Propane tank is draft to host 100 pounds of propane. Straight-forward, right? Well, no quite… So, how many gallons that propane space there in a 100 pound tank?

Because propane is stored and delivered as a liquid, it have the right to be useful to understand what this looks prefer in terms of gallons. When there’s a reasonably simple answer, there room a couple of different factors that can influence how numerous gallons are actually in a 100 lb. Tank.

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The basic Answer


To placed it simply, 0.236 gallons = 1 lb of propane. 

This is true once the propane tank is at a temperature that 60 degrees Fahrenheit. 

So, 0.236 gallons x 100 pounds = 23.6 gallons.

A 100 lb. Tank holds 23.6 gallons and also weighs 170 lbs. Once full.

Other Factors

As mentioned, there are extr factors the can impact the overall amount of usable propane in ~ the tank. These encompass water capacity and also tank temperature. Let’s take a closer look at every of these to see how they impact your propane tank supply. 

Water Capacity

Each gas cylinder will have a water volume number stamped ~ above the collar and also will look at something choose “WC 240.” This is the complete mass of liquid – stated in pounds – that a cylinder might hold if filled entirely with water. 

However, when filled with propane, gas cylinders can only be filled as much as 42% the the water capacity. This is come accommodate for the fluctuations in tank push as temperatures change.

For this example, 240 (water capacity) x 0.42 (max. Capacity) = 100.8 lb.

So our tank can actually host a maximum of 100.8 lb when filled.

As stated above, we recognize that each lb. Propane is 0.236 gallons.

This way that 0.236 gallons x 100.8 pounds = 23.789 gallon propane.

Again, this doesn’t make a huge difference, yet it deserve to still it is in a variable to take into consideration when deciding what size of tank come use.

How Temperature affect Tank Pressure


Propane does no sit unaffected in ~ propane tanks. The optimal ambient temperature (which was assumed in the instance above) is 60 degrees Fahrenheit. At this temperature, a tank that has been filled would produce a reading of around 40% ~ above a tank gauge. 

As temperature rise, the tank gauge reading will go up. It’s tho the very same weight of propane in the tank – the molecules have just become much more spread out. 

The reverse happens once temperatures drop, so don’t be surprised when that reading goes down. This is not due to the fact that there is less usable propane in the tank – the propane has actually just become an ext dense or compact, and the volume has actually decreased. The chillier the temperature, the an ext the levels will change. 

The lower pressure can reason tanks to protect against working properly. Maintaining tank press up may require an ext frequent refills; also when there is still “usable” propane in the tank, the volume is no high enough and additional propane have to be added to lug tank pressure back up. 

How can I keep My Propane in ~ the best Temperature?

Constantly making a trip to obtain a tank refill can be costly and frustrating. Luckily, over there is another method to store your tank working nicely through plenty the propane at the ready once you space – Propane Tank Heaters. 

Propane tank heaters effortlessly transfer warmth to the tank, increasing the BTU (British heat Energy) the the propane. In simple terms, this heat energy works by transferring warmth from one object (the tank heater) to an additional (the tank) – raising the movement of its molecules and also keeping it at optimal functioning temperature. 

A well-made heater will conserve you the trouble of make time-consuming, not to point out expensive, refills by increasing your tank temperature and, consequently, your overall tank pressure. This kind of heater is a safety-certified electric blanket the wraps about the whole surface of her tank, no issue what size tank the is. That absolutely the “no-hassle” method to temperature regulation, allowing you to use every gallon of propane in ~ the tank.

 If you generally use propane throughout cold weather months, a tank heater is absolutely worth checking out!


Choose Propane Tank Heaters

Here in ~, we create the best propane tank heating remedies on the market. Right here are few of the services you deserve to expect from one of our carefully-made tank heaters.

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Maintains Optimal ambient Temperature Wide selection of Tank size to select FromProvides Uniform barrier of Heat throughout The whole TankReduces prices By Optimizing Temperatures and Increasing Tank EfficiencyLimits amount of vital RefillsCreates safe Storage Conditions, Without threat of ExplosionsEasily Installed and Low MaintenanceSafety Certified by UL/CSA/CE

Here in ~, our professional team specialization in heater all gas shipment systems. For her propane-heating needs, there simply is no better choice 보다 

Give united state a call at 801.506.0198 with any questions you have. We’re constantly ready to help.