Propane Cylinder Size Chart: Dimensions, Weight, BTU - LearnMetrics (2023)

When calculating the heater ratings, we all needed different sizes of propane tanks to properly size the heater units. This would range from stating:

Finding all of these propane tank specs wasn't easy. It was even difficult to find the dimensions of the most common 20-pound, 100-pound, 250-gallon, and 500-gallon propane tanks. If you've googled a bit about propane tank sizes, you've probably had a similar experience.

We didn't find any website resource where you want to list all propane cylinders:from a 1 lb propane bottle to the massive 2,000 gallon underground propane tank– with their sizes; mainly dimensions and tare weight (empty weight).

To help anyone searching for propane tank dimensions and "how much does X lb or gallons of an empty propane tank weigh?" we've come up with thisMake a complete chart of propane tank sizes(You can check it below).

Includes all 48 standardized propane cylinder sizes. The table covers all propane cylinderstiny1 scaleTank to the biggest2,000 gallonsPropantank. Here's how you classify them a bit:

Below is a full chart covering all 48 propane tank sizes with average dimensions and tare weights.

Below the table we also cover the 5 most common sizes of propane (20 poundsj100 poundsStandardtanks u100 gallons,250 gallons, j500 gallonsresidential propane tanks). In addition to specifying the dimensions and curb weight, we have added:

Below the chart are the best propane tank sizes by weight, BTU, etc.

This table summarizes the sizes and dimensions of propane tanks, starting with the smallest (1 lb) and progressing to the largest propane tank (2,000 gallons):

Propane Tank Size:Length (Inches):Diameter (inches):Width (inches):size in inches):curb weight:
1 scale8 inches4 inches4 inches4 inches1.3 pounds
2 pounds10 inches5 inches5 inches5 inches2.1 pounds
3 pounds10 inches7 inch7 inch7 inch3.7 pounds
1 Gallon12 inches7.6 inches7.6 inches7.6 inches5.9 pounds
5 pounds12 inches8 inches8 inches8 inches6.7 pounds
2 gallons18 inches8.8 inches8.8 inches8.8 inches7.8 pounds
10 pounds18 inches9 inches9 inches9 inches9.8 pounds
11 pounds12.4 inches12.2 inches12.2 inches12.2 inches10.4 pounds
3 gallons13 inches12.2 inches12.2 inches12.2 inches10.9 pounds
15 pounds18 inches10 inches10 inches10 inches11.8 pounds
4 gallons18 inches11.6 inches11.6 inches11.6 inches12.7 pounds
20 pounds18 inches12 inches12 inches12 inches13.5 pounds
5 gallons20 inch12 inches12 inches12 inches14.8 pounds
25 pounds21 inches12 inches12 inches12 inches15.1 pounds
6 gallons24 inches12 inches12 inches12 inches17.2 pounds
7 gallons24 inches12.4 inches12.4 inches12.4 inches18.9 pounds
30 pounds24 inches12.5 inches12.5 inches12.5 inches19.2 pounds
33 pounds26.75 inches12.5 inches12.5 inches12.5 inches23.3 pounds
40 pounds27 inches14.5 inches14.5 inches14.5 inches27.4 pounds
10 gallons27 inches15.1 inches15.1 inches15.1 inches31.8 pounds
50 pounds27.4 inches15.1 inches15.1 inches15.1 inches34.1 pounds
60 pounds44.1 inches12 inches12 inches12 inches37.3 pounds
15 gallons44.7 inches12 inches12 inches12 inches39.7 pounds
80 pounds46 inches12 inches12 inches12 inches43.2 pounds
20 gallons46 inches12.5 inches12.5 inches12.5 inches50.1 pounds
100 pounds48 inches14.5 inches14.5 inches14.5 inches67 pounds
25 gallons48 inches15 inches15 inches15 inches69 pounds
120 pounds48 inches16 inches16 inches16 inches75 pounds
30 gallons48 inches16.8 inches16.8 inches16.8 inches81 pounds
150 pounds48 inches18 inches18 inches18 inches101 pounds
40 gallons48 inches19 inches19 inches19 inches118 pounds
200 pounds48 inches19.6 inches19.6 inches19.6 inches127 pounds
50 gallons50 inches21 inches21 inches21 inches139 pounds
60 gallons50 inches23.1 inches23.1 inches23.1 inches156 pounds
80 gallons50 inches25.3 inches25.3 inches25.3 inches178 pounds
420 pounds50 inches27.9 inches27.9 inches27.9 inches206 pounds
100 gallons50 inches28 inches28 inches28 inches212 pounds
500 pounds52 inches28.8 inches28.8 inches28.8 inches254 pounds
120 gallons52 inches30 inches30 inches30 inches260 pounds
150 gallons85 inches25 inches25 inches25 inches298 pounds
200 gallons88 inches27 inches27 inches27 inches387 pounds
250 gallons92 inches30 inches30 inches30 inches483 pounds
300 gallons100 inches30 inches30 inches30 inches591 pounds
400 gallons112 inches32 inches32 inches32 inches794 pounds
500 gallons120 inches37 inches37 inches37 inches949 pounds
750 gallons160 inches39 inches39 inches39 inches1,365 pounds
1,000 gallons190 inches41 inches41 inches41 inches1,760 pounds
2,000 gallons288 inches55 inches55 inches55 inches3,400 pounds

In many cases you will also need to convert pounds of propane to gallons of propane. You couldCheck here how much a gallon of propane gas weighs in detail; We'll use a simple one1 gallon of propane equals 4.25 pounds of propaneconversion.

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Example 1:How many gallons of propane are in a 100 lb tank? 100 pounds contains 80 pounds of propane. Since 4.25 lbs of propane equals 1 gallon, that means a 100 lbs propane tank contains18.82 gallons of propane.

Example 2:How many gallons of propane are in a 20 lb tank? The 20 lb tank holds 16 lb of propane. That means a 20 pound tank contains3.76 gallons of propane.

Now let’s focus on the key specifications of the 5 most common propane cylinder sizes. Let's start with the 3 major sizes of residential propane tanks:

Dimensions, weight, BTU of 100 gallons of propane

Dimensions (LxWxH):50x28x28 inches
propane content:80 gallons
Tank leather weight:212 pounds
Full tank weight:552 pounds
How many BTUs:7.320.000 BTU
You can generate 10,000 BTU/hr for:30 days and 12 hours

100 gallon is one of the most common horizontal residential propane tank sizes. It's not necessarily underground; Most homeowners keep it in the basement or garage.

The dimensions of the 100 gallon propane tank are 50 inches wide (4 ft 2 in) and 28 inches in diameter (i.e. 2 ft 2 in wide and high).

You can fill a 100 gallon tank with a maximum of 80 gallons of propane. That's the 80% rule; If 100% full, the tank would pose a high temperature safety hazard.

How much does a 100 gallon propane tank weigh when empty? 212 pounds on average. Of course it depends on the metal the tank is made of; For example, 100-gallon aluminum propane tanks are lighter than steel tanks.

How much does a 100 gallon propane tank weigh when full? 552 pounds on average. Here you need to take the tare weight of the empty tank and add the propane weight.

1 gallon of propane weighs 4.25 pounds. You can put 80 gallons of propane in a 100 gallon tank, that's an additional 80 × 4.25 = 340 pounds. The full 100 gallon tank weighs 212 lbs + 340 lbs = 552 lbs.

Now for the calculation of the BTU content. Here is the simple conversion we can use:

1 Gallone Propan = 91.500 BTUs

How many BTUs are in a 100 gallon propane tank?

We need to multiply 80 gallons of propane by 91,500 BTUs:

80 gallons × 91,500 BTU per gallon = 7,320,000 BTU

There are 7,320,000 BTUs in a 100 gallon propane tank. If we used this tank to generate 10,000 BTU/hr of heat output, we could run that heat output for about 1 month (30 days and 12 hours to be exact). You couldCheck how long a 100 gallon propane tank lasts here.

Dimensions, weight, BTU of 250 gallon propane

Dimensions (LxWxH):92x30x30 inches
propane content:200 gallons
Tank leather weight:483 pounds
Full tank weight:1,333 pounds
How many BTUs:18.300.000 BTU
You can generate 10,000 BTU/hr for:76 days and 6 hours

The 250 gallon propane tank is a half sized home propane tank. It can hold 200 gallons of propane (80% safety rule). Let's look at the dimensions:

The 250 gallon propane bottle is 7 ft 8 in long (92 in) and 30 in diameter (width and height are 2 ft 6 in). Its total empty weight averages 483 pounds. You can check thosedetailed article on 250 gallon propane tank size here.

If you fill a 250-gallon tank completely with propane, it weighs 1,333 pounds. The 200 gallon propane adds 850 pounds to the weight of the 250 gallon propane tank.

How many BTUs are in a 250 gallon propane tank?

18,300,000 BTUs total. You can calculate the BTU content of a 250 gallon tank by dividing the max volume of propane (200 gallons) with 91,500 BTUs per gallon propane energy content.

Holding 18,300,000 BTUs, a 250 gallon propane tank can run a 10,000 BTU/hr heater or stove for 76 days and 6 hours. You couldCheck how long a 250 gallon propane tank lasts here.

Dimensions, weight, BTU of 500 gallons of propane

Dimensions (LxWxH):120x37x37 inches
propane content:400 gallons
Tank leather weight:949 pounds
Full tank weight:2,649 pounds
How many BTUs:45.750.000 BTU
You can generate 10,000 BTU/hr for:190 days and 15 hours

500 gallon is a great residential propane tank. This large tank can be installed in the basement, in a large garage, or in many cases as an underground propane tank.

Holds a maximum of 400 gallons of propane. The empty 500 gallon propane tank weighs approximately 949 pounds. If you add 400 gallons (1,700 lbs.) of propane, the weight of a full 500 gallon propane tank is 2,649 lbs.

How many BTUs does a 500 gallon tank hold?

In total, it contains nearly 50 million BTUs (45,750,000 BTUs to be exact). That is enough to operate a heater with 10,000 BTU/h for half a year (190 days and 15 hours). You couldCheck how long a 500 gallon propane tank lasts here.

20-pound propane tank dimensions, weight, BTU

Dimensions (LxWxH):18x12x12 inches
propane content:16 pounds
Tank leather weight:13.5 pounds
Full tank weight:29.5 pounds
20lb propane gas tank BTU capacity:344.470 BTU
You can generate 10,000 BTU/hr for:34.4 hours

20 lbs. is the most common BBQ propane tank size. You can also use it to fuel a variety of propane heaters or even propane generators with propane gas.

20 lb Propane Tank Dimensions: Measures 18" long by a 12" diameter. Given the 80% safety rule, you can put a total of 16 pounds of propane in a 20 pound tank.

The weight of the empty 20 lb propane tank is approximately 13.5 lbs. 20 pound aluminum propane tanks can be lighter, steel tanks are heavier.

How much does a full 20 lb propane bottle weigh?

The full 20-pound propane tank weighs an average of 29.5 pounds. You must add the weight of 16 pounds of propane to the empty weight (13.5 pounds) of the 20 pound propane tank to get the total.

Overall, a 20-pound propane tank contains a large amount of BTUs. Exactly how many BTUs does it contain?

The 20-pound propane tank holds 344,470 BTUs. That's enough to power a 10,000 BTU/hr heater for more than a day (34.4 hours to be exact).

100-pound propane tank dimensions, weight, BTU

Dimensions (LxWxH):48 × 14.5 × 14.5 inches
propane content:80 pounds
Tank leather weight:67 pounds
Full tank weight:147 pounds
100lb propane gas tank BTU capacity:1.722.350 BTU
You can generate 10,000 BTU/hr for:7 days and 4 hours

100 lbs is a larger upright propane cylinder. It is a cylinder 4 feet long and 14.5 inches in diameter.

The empty 100-pound propane tank weighs 67 pounds. If you fill it with 80 pounds of propane, it will weigh 147 pounds total.

That 80 pounds of propane gives the 100 pound propane tank a capacity of 1,722,350 BTU. This is enough for a 100 lb propane tank to last 7 days and 4 hours when turning on a 10,000 BTU/hr unit.

We hope all this information on propane tank sizes is helpful to you. If you need additional help, you can ask a question in the comments below and we will do our best to answer it.


How long will a 15000 BTU heater run on a 20 lb propane tank? ›

The ProCom Heating Single Infra-Red Tank Top Propane Heater (Single Burner) operates in 3 heat settings with a maximum of 15,000 BTU. These low cost outdoor heaters are the perfect solution when you need instant heat. This small but powerful heater can run for up to 43 hours on a single 20 lb. propane tank.

How many Btu are in a 20 lb propane tank? ›

A standard sized 20-pound propane cylinder holds approximately 430,000 BTUs of liquid propane. Each gallon of propane contains 91,502 BTUs of potential heat and each pound contains approximately 21,548 BTUs.

How do I know what size propane cylinder I have? ›

Tanks are measured based on their height/length and diameter (measuring from one side, to the other, across the center point of the tank).

How long will a 20lb propane tank last on a 50000 BTU heater? ›

For such 50,000 BTU heaters, a 20 lb propane tank will last between 7 and 8 hours. That is to say that a 20 lb propane tank can last a whole evening, even if it has to power a 50,000 BTU patio heater.

How many BTU is a 100 lb propane tank? ›

A 100-lb. propane tank has a BTU capacity of 2,160,509.

How long will a 20lb propane tank run a 10000 BTU heater? ›

If the heater is running constantly it will burn a full (actually 20 pounds) tank in about 35-40 hours.

How many BTUs are in 1 gallon of propane? ›

Let's walk through how to do this. Liquid propane (LP) has 91,500 British thermal units (BTUs) per gallon. Electric heat has 3,413 BTUs per kilowatt hour (kWh) or 1,000 watts per hour.

How can you tell how much propane is left by weight? ›

To measure how many pounds of propane are left in your tank, simply weigh it on a scale and subtract the TW number. For example, if a tank weighing 27 pounds has a TW of 17 pounds, there's about 10 pounds of gas left – a little more than half a tank.

How much should a full 20 lb propane tank weigh? ›

How much does a full 20 lb propane tank weigh? The full 20 lb propane tank weighs 29.5 pounds, on average. You need to add the weight of 16 lb of propane to the empty weight (13.5 lbs) of the 20 lb propane tank to get the total.

How many BTUs are in a 250 gallon propane tank? ›

At higher temperatures, propane expands and creates an outward pressure on the 250-gallon tank. To account for that pressure, we only put 80% of fuel (propane) in the tank. 200 gallons of propane in a full 250-gallon tank contains 18,300,000 BTU of energy (or heating).

How many BTUs is a 500 gallon propane tank? ›

That means that a full 500-gallon tank holds 400 gallons of propane. Its totally energy content is 36,600,000 BTUs (100% efficiency).

How long will a 20lb propane tank last on a 48000 BTU heater? ›

A standard 20lb. propane cylinder will last for up to 10 hours in an outdoor gas heater.

Does propane go bad? ›

Does propane expire? Another way you get peace of mind with propane delivery from Bottini Fuel is that propane doesn't have a shelf life or an expiration date. That's because propane doesn't go bad! Other fuel sources can degrade over time, like kerosene, diesel, heating oil and gasoline.

How long will a 30000 BTU heater run on a 20 lb tank? ›

Note that a 30,000btu unit will go through a gallon (about 4.2#) in a bit more that 3 hours (figure 91,500 btu's per gal LP). The typical '20#' cylinder is filled short, only about 3.5 gal.,so you would run about 10.5 hours.

Which is cheaper to run propane or kerosene heater? ›

By contrast, propane is cleaner burning and can easily be found at most gas stations and grocery stores. It's also much cheaper than kerosene.

At what temperature does a propane tank stop working? ›

A propane tank cold temperature limit is -44 degrees Fahrenheit — at that point, propane turns from a gas to a liquid. Propane can only heat your home when it's in a gaseous state, not when it's a liquid.

Does a 100 lb propane tank have more pressure than a 20 lb tank? ›

The pressure in a 100# tank should be no different that in a 20# tank. As always I stand ready to be corrected but the only difference I'm aware is the over damage you can do to your back due to 80 more pounds being moved.

How much does a full 100 lb propane tank weigh? ›

The Simple Answer

A 100 lb. tank holds 23.6 gallons and weighs 170 lbs. when full.

How many gallons does a 100 lb propane cylinder hold? ›

100lb Propane Tanks: A 100lb pound tank is approximately 4-foot tall and 1.5-foot in diameter. These types of residential propane tanks will hold a little less than 25 gallons of propane when full and can be used for things such as home fireplaces, dryers and grills.

How long will a Mr heater Big Buddy run on a 20 lb tank? ›

Provides 3-12 hours of heat from two 1lb. propane cylinders and up to 220 hours on two 20 lb.

How many square feet will a 20000 BTU propane heater heat? ›

Up to 20,000 BTU's/hr heats up to 700 sq. ft.

How do you calculate gas by BTU? ›

To convert from BTUs to cubic feet per hour divide BTU/1100 (example: 50,000 BTU by 1100 = 45.5 cubic feet of gas per hour).

How long will a 20 lb propane tank run a big buddy heater? ›

Provides 3-12 hours of heat from two 1lb. propane cylinders and up to 220 hours on two 20 lb.

How many hours burn time with a 20 lb propane tank? ›

As a rule of thumb, a medium-sized grill on high heat will use approximately two pounds of fuel per meal. Following this rule, a 20lb propane tank will provide 18-20 hours of cooking time on a medium grill. A larger grill can burn through 20lbs of propane in as little as 10 hours.

How long will a propane heater run on a 20 lb tank? ›

The most common patio heaters produce roughly 40,000 BTUs per hour - meaning a 20-pound propane tank will provide upwards of 10 hours of heat on the highest setting.

How many years can you refill a 20 lb propane tank? ›

Under federal law, propane tanks (also called cylinders) can't be more than 12 years old. If yours has passed that age, you are not supposed to be able to refill it.

How many years is a propane tank good for? ›

There is no expiration date on the tank. However, a propane tank's date of manufacture or requalification date can be found stamped onto its collar. It will be in a month-year format — for instance, 06-22 for June 2022. Using that information, simply add twelve years to determine when your tank expires.

How long does propane stay good? ›

The simple answer is propane can last for decades. As a matter of fact, it is one of the most storage-friendly, stable and resilient energy sources around. With no expiration date, propane won't degrade or lose its potency over time, so its shelf life is extremely long.

What temperature do propane heaters stop working? ›

However, when temperatures drop too low within the tank, right around -44 degree Fahrenheit, the propane no longer has the ability to convert into its gaseous form.

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