How many pounds of propane is in a gallon

With 4.2 pounds in every gallon, you'll always have a clear understanding of just how much propane you have on hand. What is the capacity of a 500 gallon propane tank? A standard 500 gallon tank holds 400 gallons of propane and is generally installed for standard central home heat and small commercial applications.

How many pounds of propane is in a gallon. 1 gallon of propane weighs 4.11 lb per gallon. Let’s calculate how many gallons does a 100 lb propane tank hold like this: Gallons Of Propane = Weight Of Propane / Propane Density. In the case of a 100 lb tank, this means: Gallons Of Propane = 80 lb / 4.11 lb/gallon = 19.46 Gallons. Here you have it: A 100 lb tank holds 19.46 gallons of propane.

The TW of a vertical 120-gallon propane tank is usually around 175 pounds and, with a full 420 lbs of fuel, that makes the total weight of one of these tanks around 600 lbs when it is full. ... A large, professional grill might burn through around 4 pounds of propane every hour whereas the average propane water heater uses between 1 and 2 ...

Tanks are referred to by the pound. Propane is sold by the gallon. Propane weighs 4.6 pounds per gallon. A 100-pound tank can run a 7-kilowatt generator for 66 hours, or a 12-kilowatt generator for 36 hours. In general, generators operate between 25-75% of their capacity, so the fuel supply may last longer. A 100-pound propane tank holds ...A standard-sized propane tank is 20 lbs (9.07 kg) when filled fully. Put your tank on the scale for total weight, and then subtract your empty weight to determine how much propane is left in your tank.With 4.2 pounds in every gallon, you'll always have a clear understanding of just how much propane you have on hand. What is the capacity of a 500 gallon propane tank? A standard 500 gallon tank holds 400 gallons of propane and is generally installed for standard central home heat and small commercial applications.About Propane, gas. Propane, gas weighs 0.00187939 gram per cubic centimeter or 1.87939 kilogram per cubic meter, i.e. density of propane, gas is equal to 1.87939 kg/m³; at 0°C (32°F or 273.15K) at standard atmospheric pressure . In Imperial or US customary measurement system, the density is equal to 0.117326 pound per cubic foot [lb/ft³ ...Dec 16, 2021 · What Does Propane Weigh Per Gallon? The figure we just gave you will answer this question. You are looking at 4.2 pounds per gallon of propane. This number is essential to know as you will not be carrying a full tank of propane at any time. How many gallons in a pound. 1 pound (lbs) = 0.1198 gallons (gal) 1 gallon (gal) = 8.3454 pounds (lbs)

A 5 lb propane tank can hold 1-1.2 gallons of propane, which is equal to between 91,000 BTUs and 109,200 BTUs. A 5 lb propane tank is ideal for camping and fuelling smaller appliances. A tank of this size might fuel a medium grill for around 5 hours and it could last for more than a week if you take it camping with you. The TW of a vertical 120-gallon propane tank is usually around 175 pounds and, with a full 420 lbs of fuel, that makes the total weight of one of these tanks around 600 lbs when it is full. ... A large, professional grill might burn through around 4 pounds of propane every hour whereas the average propane water heater uses between 1 and 2 ...The underground tanks include the 500-gallon propane tank and the 1,000-gallon propane tank. In order to understand things properly, we must know that 1 liter of propane weighs 0.51 kilograms. Meanwhile, 1 gallon of propane weighs 4.11 pounds (2.21 kilograms).This means that you are truly only receiving 3.5 gallons (15 lbs of propane = 3.5 gallons of propane). Your local garden center or propane marketer normally gets your tanks filled with 20 lbs of propane or 4.7 gallons. Some people might ask what the big deal is because it’s only a difference of 1.2 gallons. However, when it comes to grilling ...One gallon of propane is equal to 35.97 cubic feet of propane. This figure is specifically for compressed propane, which can be found in gaseous form. Propane is widely used for cooking and running vehicles and is also known as liquefied petroleum gas (LPG). It is available through pipelines or portable tanks.How to convert 1 US gallon of propane to pounds. To convert a quantity of a substance or material expressed as a volume to mass we simply use the formula: mass = density × volume. We want to calculate the mass in pounds from a volume in US gallons. We have the density table at the bottom of this web page that shows us the densities values in ...

Sep 6, 2019 · The Simple Answer. To put it simply, 0.236 gallons = 1 pound of propane. This is true when the propane tank is at a temperature of 60 degrees Fahrenheit. So, 0.236 gallons x 100 pounds = 23.6 gallons. A 100 lb. tank holds 23.6 gallons and weighs 170 lbs. when full. Other Factors. A 33.5 lb propane tank has a maximum capacity of about 7.8 gallons or 35.5 litres. It is one of the larger tank sizes that are still reasonably portable. The 33.5 lb tank is quite a specific size of tank as opposed to the more common 20 lb or 40 lb tanks. The exact amount of fuel inside of a propane tank will vary slightly depending on how it ...Typically the water capacity (WC) and the tank’s weight while empty (TW) will be visible. If you are using a 100 lb propane tank, it will most likely be able to hold a capacity of around 118 lbs of propane. This means if you weigh your tank and it is 155 lbs, it means that you have about half a tank of propane left.Propane is a versatile and efficient fuel source that can be used for various purposes, including heating homes, powering appliances, and fueling vehicles. When considering the cos...

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Blurt. Answer (1 of 8): 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 ... In the case of a 100 lb tank, all you need to do is multiply 0.236 gallons by 100 lb. When you do this math, you will find that there are 23.6 gallons in the 100 lb propane tank. 0.236 gallons X 100 lb = 23.6 gallons. You can do this for any size tank.Each gallon of propane in a 100-pound tank weighs 4 pounds on average. It is dangerous to put more than 23-25 gallons of useable propane in a 100-pound propane tank because the pressure can fluctuate and cause an explosion. Larger, 500-propane tanks can hold as much as 125 gallons of propane. Propane is a useful resource, so it …20 LB Tank (Barbecue Tank – about 5 gallons) 18.4 H x 12.3 D: Grilling, camping, BBQ parties, portable heaters, traveling: 33 LB Tank (about 8 gallons) 21.2 H x 12.2 D: ... Propane Cylinder 20 and 30 pound Sizes Portable Propane Tank Sizes for Grills. Portable grill tanks offer a convenient propane source for backyard and portable …Prices at the pump are dropping, and some forecasts have a gallon of gas heading toward $3 a gallon. By clicking "TRY IT", I agree to receive newsletters and promotions from Money ... The weight of a gallon of propane is 4.25 pounds. In a 100-gallon tank, you may fill 80 gallons of propane, which is an additional 804.25 = 340 pounds. The weight of a full 100 gallon tank is 212 lb + 340 lb = 552 lb. A 100 gallon propane tank contains 7,320,000 BTU. We could use this tank to provide 10,000 BTU/h of heating output for roughly a ...

Product Name Cubic Feet I Pound Pounds I Gallon Cubic Feet I Gallon Acetylene UNINA: 1001 14.70 4.90 72.03 ... Propane UNINA: 1075 8.45 4.22 35.65 CAS:74-98-6 SulfurTypically the water capacity (WC) and the tank’s weight while empty (TW) will be visible. If you are using a 100 lb propane tank, it will most likely be able to hold a capacity of around 118 lbs of propane. This means if you weigh your tank and it is 155 lbs, it means that you have about half a tank of propane left.Portable propane tanks come in a variety of sizes ranging from 4 to 100 pounds. The 20-pound tank is the size most often used for gas barbecue grills. It holds 4.7 gallons of lique...Jul 19, 2016 ... Totally full (with 20 lbs of propane) it will weigh roughly 38 lbs. I don't know exactly how many gallons there are in 20lbs of propane, but I ...Mar 2, 2022 · The 500-gallon propane tank holds about 400 gallons. You can figure out how much a propane tank labeled by weight holds if you know how much a gallon of propane weighs. One gallon of propane is equal to about 4.24 pounds, so you only need to divide the weight of the full tank by 4.24. Using this method, we can find that a 20-pound tank will ... The average gallon of propane weighs roughly 4.125 pounds and that times 7 equals almost 29 pounds. While the tank may weigh over 50 pounds when full, you are only paying for the weight of the propane which is almost 30 pounds. You are getting almost 30 pounds of propane inside a 30-pound propane tank but that does not mean the tank is full.Most grills use 15 to 20-pound tanks, which should be indicated somewhere on the top of the tank, if not on the label itself. Take this number, and divide it by the propane used per hour. So, if you have a 20-pound propane tank and a grill with 20,000 BTUs, divide 20 by 0.9, which will get you the total hours the tank will burn — 22.22 …10 US gallons of propane = 48.7 pounds: 11 US gallons of propane = 53.5 pounds: 12 US gallons of propane = 58.4 pounds: 13 US gallons of propane = 63.3 pounds: 14 US gallons of propane = 68.1 pounds: 15 US gallons of propane = 73 pounds: 16 US gallons of propane = 77.9 pounds: 17 US gallons of propane = 82.7 pounds: 18 US gallons of propane ...If you multiply the maximum propane capacity in pounds by 0.236 gallons, you will be able to estimate how many gallons are in a propane tank. Here is the formula to use: 0.236 X capacity of propane tank in pounds = capacity of propane tank in gallons. In the case of a 250 pound propane tank, all you need to do is multiply 0.236 by 250.

To figure out how many gallons of propane are in a 20 lb tank, we need to convert 16 lb of propane (amount of propane in 20 lb propane tank) to gallons. Here’s how that’s done: 20 lb Propane Tank Propane Content = 16 lb ÷ 4.11 lb Per Gallon = 3.89 Gallons

As a rule of thumb, propane liquid weighs 4.11 pounds per gallon at 77°F, which translates to a density of 0.493 g/cm3. Based on that, you can calculate the weight of propane by multiplying its volume (in gallons) by 4.11. For example, 20 gallons of propane weighs: 20 gallon x 4.11 pounds/gallon = 82.2 pounds.A 100 lb propane tank can hold 23.6 gallons of propane. As one gallon of propane weighs 4.2 pounds, the calculation is simple. However, there are other attributes that can determine the change in overall quantity. The total capacity of a propane tank can change with the surrounding temperature.The diameter of a 250 gallon propane cylinder is 30 inches and it is 7 feet and 8 inches long (92 inches) (width and height are 2 feet and 6 inches). On average, its total weight when empty is 483 pounds. The full in-depth article about the 250-gallon propane tank size may be found here. It weighs 1,333 pounds to fill a 250 gallon propane tank ...Otherwise, it’s a serious safety issue. That means the 30-lb tank you just filled up is only filled to 80% or 24 lbs and that means you are getting 5.712 gallons of propane instead of 7.13 gallons. Here’s The Math. 1 gallon of propane weighs 4.2 lbs; 1 lb of propane= 0.238 gallons; 80% of 30 lbs= 24 lbsA 30,000 BTU heater requires one gallon of propane for every three hours. Therefore, if you continuously run your heater, you’ll consume 1/3 gallon of propane per hour. If your heater had 33,000 BTUs, you’d use approximately one gallon of propane per hour. A 100lb propane tank would give you roughly 72 hours of burn time.Tanks are referred to by the pound. Propane is sold by the gallon. Propane weighs 4.6 pounds per gallon. A 100-pound tank can run a 7-kilowatt generator for 66 hours, or a 12-kilowatt generator for 36 hours. In general, generators operate between 25-75% of their capacity, so the fuel supply may last longer. A 100-pound propane tank holds ...Generally, forklifts use propane tanks that range in size from about 33 pounds to 43.5 pounds. These sizes refer to the weight of the propane in the tank when it’s full, not the weight of the tank itself. Most commonly, …27 “Time” Rule. The 27 “Times” Rule is a simple way of understanding how gallons of propane and kilowatt hours of electricity relate to one another. 1 Gallon of Propane = 27 kWh (Kilowatt Hours) of electricity, which means that one gallon of propane contains the same amount of usable energy as 27 kilowatt hours of electricity.

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Fill Pricing – Most propane companies sell propane by the pound or by the gallon. It’s essential to know that there are 4.2 lbs in one gallon of propane. Propane Gas Tank Sizes. These are the most common propane gas tank sizes used in a residential setting: 20 lb tank. This propane tank measures at 18″ tall and 12″ inches in diameter.How to calculate the conversion of gallons of propane or natural gas to pounds or BTUs or to volume of gas. One gallon of propane contains about 91,500 BTUs and weighs about 4.20 pounds. One pound of propane contains about 21,500 BTUs. Calculation details are below. One gallon of LP-gas (propane or C 3 H 8) weighs about 4.20 lbs (at 60°F ...Thus, liquid propane has a density of approximately 4.2 pounds per gallon (504 g/L) at 60 °F (15.6 °C). The capacity of the propane tank in gallons is computed by the following formula . Note …This chocolate cake recipe is delicious. We love a buttery and dense pound cake, but we thought a chocolate version would be even better so we folded lots of dark cocoa into the ba...A 50 pound propane tank can hold about 11.8 gallons of propane whenever the propane is kept at 60 degrees Fahrenheit. Changing the temperature of the propane will change this number, but most 50 pound propane tanks hold 11.8 gallons. If you just want a quick answer to how many gallons are in 50 pound propane tanks, great. You have your …This gives you the number of hours it will take to utilize one gallon of propane at the highest heat setting on the grill. Finally, divide the number of hours by the tank’s capacity in gallons. 4.7 gallons (17.8 liters) of propane is held in a full 20-pound (9-kilogram) propane tank. If your grill has a 32,000 BTUH output, you’ll receive ...At a 77°F temperature, 1 gallon of propane weighs 4.11 lbs. That means we are adding 96 × 4.11 = 395 lbs of propane when we are filling the cylinder to the empty weight of 250 lbs. The resulting total full weight of a 120-gallon vertical propane tank is thus 655 lbs. Shell Thickness: 0.174 Inches. Head Thickness: 0.173 Inches.If you’re in the market for a 500 gallon propane tank, there are several factors you should consider before making your purchase. Investing in a propane tank is a significant decis...How many pounds is a gallon of propane? Roughly, one gallon of liquid propane weighs between 4.11 and 4.24 pounds, depending on temperature. A gallon of water weighs around twice as much, at 8.33 pounds. How many gallons of propane will a 100 lb tank hold? A 100 lb propane tank, typically used for commercial applications …When fully loaded, a 500 gallon propane tank should weigh around 2,876 pounds (1,305 kg). This figure covers the tank’s weight as well as the propane within. A 500 gallon propane tank weighs around 1,180 pounds when empty (535 kg). The weight of liquid propane per gallon is 4.24 pounds (1.92 kg). How long would 500 gallons of propane … ….

This chocolate cake recipe is delicious. We love a buttery and dense pound cake, but we thought a chocolate version would be even better so we folded lots of dark cocoa into the ba...This chocolate cake recipe is delicious. We love a buttery and dense pound cake, but we thought a chocolate version would be even better so we folded lots of dark cocoa into the ba...Propane is a versatile and efficient fuel source that can be used for various purposes, including heating homes, powering appliances, and fueling vehicles. When considering the cos...The exact quantity of propane contained within a tank of this size can vary slightly. 40 lb propane tanks hold between 9 and 10 gallons of propane, but the average is between 9.2 – 9.4 gallons. This equates to around 41 – 43 liters of propane fuel inside the tank when it is full. 9 – 10 gallons is a pretty reasonable quantity of fuel.When fully loaded, a 500 gallon propane tank should weigh around 2,876 pounds (1,305 kg). This figure covers the tank’s weight as well as the propane within. A 500 gallon propane tank weighs around 1,180 pounds when empty (535 kg). The weight of liquid propane per gallon is 4.24 pounds (1.92 kg). How long would 500 gallons of propane keep you ...If you’re in the market for a 500 gallon propane tank, there are several factors you should consider before making your purchase. Investing in a propane tank is a significant decis...At 60°F, the density of propane is high (4.20 lb/gallon). When filling gallons of propane into a 40 lb propane tank, we usually take the propane density at room temperature (77°F). The key metric we need to calculate how many gallons of propane are in a 40-pound propane tank is that the median density of propane is 4.11 lb per gallon.A 33.5 lb propane tank has a maximum capacity of about 7.8 gallons or 35.5 litres. It is one of the larger tank sizes that are still reasonably portable. The 33.5 lb tank is quite a specific size of tank as opposed to the more common 20 lb or 40 lb tanks. The exact amount of fuel inside of a propane tank will vary slightly depending on how it ... How many pounds of propane is in a gallon, Blurt. Answer (1 of 8): 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 ..., With 4.2 pounds in every gallon, you'll always have a clear understanding of just how much propane you have on hand. What is the capacity of a 500 gallon propane tank? A standard 500 gallon tank holds 400 gallons of propane and is generally installed for standard central home heat and small commercial applications., 1 gallon of propane, R 290 in kg. 10 gallons of ethyl ether in pounds. 3/4 m³ of aniline in tonnes. 8 m³ of iodine in kg. While every effort is made to ensure the accuracy of the information provided on this website, neither this website nor its authors are responsible for any errors or omissions., Each gallon of propane in a 100-pound tank weighs 4 pounds on average. It is dangerous to put more than 23-25 gallons of useable propane in a 100-pound propane tank because the pressure can fluctuate and cause an explosion. Larger, 500-propane tanks can hold as much as 125 gallons of propane. Propane is a useful resource, so it …, How many pounds in a gallon? 1 gallon (gal) is equal to 8.3454 pounds (lbs) 1 pound (lbs) is equal to 0.1198264912406835 gallons (gal) Gallons to pounds Formula: It becomes easier, you can put in your value of gallons into this formula for gallon to lbs to calculate value for you accurately. The formula for gallon to lbs is: pounds = gallons × ..., The answer to how many pounds are in 5 gallons of water comes from the widely known mass-density-volume formula: Mass [pounds] = Density [pounds/gallon] × Volume [gal]‎. Substituting the density of water and the volume, we get: Mass [pounds] = 8.3454 pounds/gallon × 5 gallons = 41.73 pounds., For example, if we use 2 gallons of propane per day for heating, the 100-gallon propane tank will last for 50 40 days. That’s because, due to the 80% tank rule , a 100 gallon when full doesn’t contain 100 gallons of propane; it contains 80 …, Of LPG and Pound/gallon [US] you have to do the following: First divide 100757838.45 / 0.45359237/0.0037854118 = 840864.9171306 . Then multiply the amount of Gallon [U.S.] Of LPG you want to convert to Pound/gallon [US], use the chart below to guide you., 1 gallon of heating oil (with sulfur content at 15 to 500 parts per million) = 138,500 Btu. 1 barrel of residual fuel oil = 6,287,000 Btu. 1 cubic foot of natural gas = 1,036 Btu. 1 gallon of propane = 91,452 Btu. 1 short ton (2,000 pounds) of coal (consumed by the electric power sector) = 18,820,000 Btu., As a rule of thumb, propane liquid weighs 4.11 pounds per gallon at 77°F, which translates to a density of 0.493 g/cm3. Based on that, you can calculate the weight of propane by multiplying its volume (in gallons) by 4.11. For example, 20 gallons of propane weighs: 20 gallon x 4.11 pounds/gallon = 82.2 pounds. , May 26, 2023 · Now if you’re wondering how many btus in a half gallon of propane, it’s important to note that there are approximately 42,000 btus in a gallon of propane. So half a gallon would have approximately 21,000 btus. Propane is still a great option for powering appliances efficiently and sustainably. , Otherwise, it’s a serious safety issue. That means the 30-lb tank you just filled up is only filled to 80% or 24 lbs and that means you are getting 5.712 gallons of propane instead of 7.13 gallons. Here’s The Math. 1 gallon of propane weighs 4.2 lbs; 1 lb of propane= 0.238 gallons; 80% of 30 lbs= 24 lbs, Propane weighs 4.24 lbs per gallon.) This chart is a great guide to the different sizes and types of propane tanks available. Find the best propane tank for your use!, A 100 lb propane tank will contain 23 gallons of propane. Thus, when it is full, a 100lb propane tank will contain 493kg/m3 x 23 gallons totaling 11,339kg/m3, taking its weight to around 180 pounds when complete. This, in fact, amounts to 78% – 80% in cubic measure of the tank, so the molecules of propane have enough room to roam., A 100 lb propane tank can hold 23.6 gallons of propane. As one gallon of propane weighs 4.2 pounds, the calculation is simple. However, there are other attributes that can determine the change in overall quantity. The total capacity of a propane tank can change with the surrounding temperature., To figure out how many gallons of propane are in a 20 lb tank, we need to convert 16 lb of propane (amount of propane in 20 lb propane tank) to gallons. Here’s how that’s done: 20 lb Propane Tank Propane Content = 16 lb ÷ 4.11 lb Per Gallon = 3.89 Gallons, Common sizes for residential tanks include 5 gallons (often referred to as 20-pound tanks because of the weight of the propane they hold), 7.5 gallons, 10 gallons, and so on. 3. Multiply the Tank’s Capacity by the Weight of Propane per Gallon: Propane generally weighs around 4.2 lbs per gallon. 4. , Thus, liquid propane has a density of approximately 4.2 pounds per gallon (504 g/L) at 60 °F (15.6 °C). The capacity of the propane tank in gallons is computed by the following formula . Note …, There are many different sizes of propane tanks, but the tanks commonly used for backyard barbecues weigh 37 to 38 pounds when full. Manufacturers stamp the weight of the empty tan..., A 250-gallon propane tank, for example, weighs 483 pounds when empty and 1,333 lbs when filled. 1 gallon of propane weighs 4.11 pounds at 77K, as you can see in a more detailed rendition. Installing it empty (with almost 500 pounds of weight) and then filling it up is the best approach., How to convert 1 US gallon of propane to tonnes. To convert a quantity of a substance or material expressed as a volume to mass we simply use the formula: mass = density × volume. We want to calculate the mass in tonnes from a volume in US gallons. We have the density table at the bottom of this web page that shows us the densities values in ..., How many pounds is a gallon of propane? Roughly, one gallon of liquid propane weighs between 4.11 and 4.24 pounds, depending on temperature. A gallon of water weighs around twice as much, at 8.33 pounds. How many gallons of propane will a 100 lb tank hold? A 100 lb propane tank, typically used for commercial applications …, A 100 lb propane tank will contain 23 gallons of propane. Thus, when it is full, a 100lb propane tank will contain 493kg/m3 x 23 gallons totaling 11,339kg/m3, taking its weight to around 180 pounds when complete. This, in fact, amounts to 78% – 80% in cubic measure of the tank, so the molecules of propane have enough room to roam. , A 100 lb propane tank can hold 23.6 gallons of propane. As one gallon of propane weighs 4.2 pounds, the calculation is simple. However, there are other attributes that can determine the change in overall quantity. The total capacity of a propane tank can change with the surrounding temperature., The full weight of a 30-pound propane tank is approximately 55 pounds, when the tank is completely filled. The size of a propane tank that holds 30 pounds of propane is a 7-gallon ..., A gallon of propane weighs 4.24 pounds. The average for a grill tends to be a little over 4 gallons, which would equal out to around 20 pounds of propane. The type you might see for small generators, for example, could be anywhere between 1 to 4 gallons. Therefore, you might get something that weighs anywhere between 5 and 20lbs respectively., When I buy "20-pound bond paper," what part of it weighs 20 pounds? A ream certainly doesn't weigh 20 pounds. Advertisement The way we talk about paper in the United States is amaz..., A 500-gallon propane tank will hold 400 gallons of propane, and on average will need to be refilled twice a year if it’s used for heating, cooking, and appliances. Tanks used for fewer ..., A full 20-pound tank of liquid propane is equal to 4.7 gallons (17.8 liters). This same tank weighs approximately 68 pounds (31 kg) when expressed in kilograms. Furthermore, a gallon of propane is equivalent to 0.42 pounds (0.19 kg) when expressed in kilograms. Knowing how to convert propane weights between units of measurements …, LP Tank Filling Capacity Chart. GAL. PROPANE = LBS. PROPANE ÷ 4.11 (LBS./GAL.), Where 4.11 (LBS./GAL.) is the density @ 25°C (77°F), it must be noted that propane expands at ~1.5% per 10°F, thus it is critical to know the temperature of the propane to know the exact gallons. LBS., When the propane tank temperature is 60 degrees Fahrenheit, this is true. 23.6 gallons = 0.236 gallons times 100 pounds A 100-pound tank has a capacity of 23.6 gallons and weights 170 pounds. How long would a hundred gallons of propane keep you warm?, The propane weighs about 17 pounds, and a tank that is full will weigh about 35 pounds usually. The measurement for this size of the tank is 430,000 BTUs. 30 lb. Propane Tank. A 30 lb tank holds 7 gallons of propane and weighs 55 lbs full. The 30 lb. propane tank increases even more in size and capacity., LP Tank Filling Capacity Chart. GAL. PROPANE = LBS. PROPANE ÷ 4.11 (LBS./GAL.), Where 4.11 (LBS./GAL.) is the density @ 25°C (77°F), it must be noted that propane expands at ~1.5% per 10°F, thus it is critical to know the temperature of the propane to know the exact gallons. LBS.