It more than likely goes without saying, however a 100 lb. Propane tank is designed to hold 100 pounds of propane. Straight-forward, right? Well, no quite… So, how countless gallons the propane room there in a 100 lb tank?

Because propane is stored and also delivered as a liquid, it deserve to be advantageous to understand what this looks like in regards to gallons. If there’s a fairly simple answer, there space a few different determinants that can influence how numerous gallons space actually in a 100 lb. Tank.

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The an easy Answer


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

This is true when the propane tank is in ~ a temperature of 60 levels Fahrenheit. 

So, 0.236 gallons x 100 pounds = 23.6 gallons.

A 100 lb. Tank holds 23.6 gallons and also weighs 170 lbs. As soon as full.

Other Factors

As mentioned, over there are extr factors the can impact the all at once amount the usable propane within the tank. These encompass water capacity and also tank temperature. Let’s take a closer look at each of this to see how they impact your propane tank supply. 

Water Capacity

Each gas cylinder will have a water capacity number stamped ~ above the collar and will watch something choose “WC 240.” This is the total mass of fluid – stated in pounds – that a cylinder might hold if filled completely with water. 

However, as soon as filled v propane, gas cylinders have the right to only it is in filled up to 42% the the water capacity. This is to accommodate for the fluctuations in tank pressure as temperature change.

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

So ours tank deserve to actually organize a best of 100.8 lb when filled.

As mentioned above, we understand 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 vast difference, yet it have the right to still it is in a aspect to think about when deciding what size of tank to use.

How Temperature influence Tank Pressure


Propane does no sit unaffected in ~ propane tanks. The optimal approximately temperature (which was assumed in the example above) is 60 levels Fahrenheit. At this temperature, a tank that has actually been fill would develop a reading of about 40% top top a tank gauge. 

As temperatures rise, the tank gauge reading will go up. It’s quiet the same weight of propane in the tank – the molecules have actually just become more spread out. 

The reverse happens as soon as temperatures drop, so don’t be surprised once that reading goes down. This is not since there is much less usable propane in the tank – the propane has actually just become much more dense or compact, and the volume has decreased. The cooler the temperature, the more the levels will change. 

The lower pressure can cause tanks to protect against working properly. Maintaining tank push up may require an ext frequent refills; also when there is quiet “usable” propane in the tank, the volume is no high enough and additional propane must be included to lug tank pressure earlier up. 

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

Constantly do a pilgrimage to obtain a tank refill deserve to be costly and frustrating. Luckily, there is another means to keep your tank working nicely through plenty the propane at the ready when you space – Propane Tank Heaters. 

Propane tank heaters effortlessly transfer warm to the tank, raising the BTU (British heat Energy) of the propane. In basic terms, this heat power works by transferring warm from one thing (the tank heater) to another (the tank) – increasing the movement of its molecules and also keeping it at optimal functioning temperature. 

A well-made heater will save you the trouble of making time-consuming, no to cite expensive, refills by increasing your tank temperature and, consequently, your all at once tank pressure. This kind of heater is a safety-certified electrical blanket that wraps around the entire surface of your tank, no matter what dimension tank it is. The absolutely the “no-hassle” method to temperature regulation, permitting you to use every gallon that propane in ~ the tank.

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


Choose Propane Tank Heaters

Here at, we develop the best propane tank heating options on the market. Here are few of the benefits you can expect from one of our carefully-made tank heaters.

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Maintains Optimal approximately Temperature Wide range of Tank size to pick FromProvides Uniform obstacle of Heat throughout The entire TankReduces costs By Optimizing Temperatures and also Increasing Tank EfficiencyLimits amount of vital RefillsCreates for sure Storage Conditions, Without risk of ExplosionsEasily Installed and Low MaintenanceSafety Certified by UL/CSA/CE

Here at, our professional team specialization in heater all gas shipment systems. For your propane-heating needs, there just is no far better choice 보다 

Give united state a call at 801.506.0198 with any kind of questions girlfriend have. We’re constantly ready come help.