Liquefied propane gas weighs 4.11 pounds per gallon at 77°F, which is equal to a density of 0.493 g/cm3 or 493 kg/m3. The exact density of propane depends on certain external factors like elevation and temperature.
But if you don’t feel like calculating and would rather just get the values from some charts, you’ve come to the right place.
We at PowerSportsGuide have compiled the most common conversion numbers into this post!
What is Propane Gas?
Propane gas is an alternative fuel, manufactured as a by-product of processing natural gas or less frequently by refining crude oil.
It’s a colorless and odorless gas, which is why manufacturers add an identifying odor to it. In the event of a gas leak, this odor addition helps to detect the issue.
Propane is a powerful and safe fuel that powers millions of businesses and homes worldwide. It can be used for many different purposes; some of the most common of these are the following:
- Vehicle fuel (cars, forklifts, buses, fleet vehicles)
- Fuel for industrial engines (e.g., power generators)
- Agricultural use (e.g., irrigation engines, crop drying, flame weeding)
- Compressor-based refrigeration (e.g., in RVs and for camping)
- Metal melting
- Printing applications
- Water and space heaters
- Cooking
- Plastic manufacturing
Beyond these, propane is used in numerous commercial and residential appliances that require an efficient portable fuel.
Commercially available propane is typically labeled as “LPG” or “LP-gas,” which are abbreviations for “liquefied petroleum gas.”
As the name suggests, propane gas is compressed and stored in liquid form, but in most cases, it’s used as a gas for powering vehicles or appliances.
Are you wondering what propane weighs per gallon when it is stored in tanks as a liquid?
Keep reading!
What does Propane Weigh per Gallon?
Under atmospheric pressure and at room temperature, propane exists in the form of a gas.
But under lower temperatures and/or higher pressure, it turns into a liquid, which is a game-changer for storage. Liquefied propane gas can be easily stored, shipped, and distributed in pressurized tanks.
According to Ferrellgas, liquid propane gas should be stored between 100 and 200 psi to keep it in liquid form.
How much does this liquefied propane gas weigh?
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
However, the density of propane depends on the elevation and temperature. For example, the density of propane at various temperatures is as follows:
- Propane density 4.05 lb./gallon at 90°F
- Propane density 4.09 lb./gallon at 80°F
- Propane density 4.11 lb./gallon at 77°F
- Propane density 4.17 lb./gallon at 70°F
- Propane density 4.20 lb./gallon at 60°F
Higher temperatures cause a decrease in propane density, which results in increased pressure inside the tank.
Because of this, the pressure inside a propane tank varies depending on the storing temperature.
The weight of one gallon of propane liquid at 77°F in various measurement units is as follows:
- 1 US gallon of propane = 4.11 pounds
- 1 US gallon of propane = 65.83 ounces
- 1 US gallon of propane = 1.87 kg
- 1 US gallon of propane = 1866.21 grams
Propane Pounds-Per-Gallon Chart
For your convenience, we’ve listed the most common conversion numbers in this propane weight chart (at a temp of 77°F):
| US Gallons | Weight of Propane at 77 F (lbs) |
| 1 lbs | 4.11 lbs |
| 2 lbs | 8.22 lbs |
| 3 lbs | 12.33 lbs |
| 4 lbs | 16.44 lbs |
| 5 lbs | 20.55 lbs |
| 6 lbs | 24.66 lbs |
| 7 lbs | 28.77 lbs |
| 8 lbs | 32.88 lbs |
| 9 lbs | 36.99 lbs |
| 10 lbs | 41.1 lbs |
| 20 lbs | 82.2 lbs |
| 30 lbs | 123.3 lbs |
| 40 lbs | 164.4 lbs |
| 50 lbs | 205.5 lbs |
| 60 lbs | 246.6 lbs |
| 70 lbs | 287.7 lbs |
| 80 lbs | 328.8 lbs |
| 90 lbs | 369.9 lbs |
| 100 lbs | 411 lbs |
| 120 lbs | 493.2 lbs |
| 200 lbs | 822 lbs |
| 250 lbs | 1027.5 lbs |
| 300 lbs | 1233 lbs |
| 330 lbs | 1356.3 lbs |
| 400 lbs | 1644 lbs |
| 500 lbs | 2055 lbs |
| 1000 lbs | 4110 lbs |
| 2000 lbs | 8220 lbs |
| 3000 lbs | 12330 lbs |
| 4000 lbs | 16440 lbs |
| 5000 lbs | 20550 lbs |
This chart is for informational purposes only.
How Much Propane is in One Pound?
With the inverse of the above calculation, we can get to how much propane is in one pound.
The general rule is that the volume of one pound of propane is 0.243 gallons at 77°F. Based on that, you can convert the weight of propane to gallons by multiplying the weight figure by 0.243.
For example, converting 20 pounds of propane into gallons:
20 pounds x 0.243 gallons/pounds = 4.87 gallons
Alternatively, you can divide the weight by 4.11:
20 pounds / 4.11 pounds/gallon = 4.87 gallons
Again, this is true when the propane is stored at 77°F.
As an addition, one pound of propane in various units of volume is as follows (at 77°F):
- 1 pound of propane = 0.243 US gallons
- 1 pound of propane = 0.202 Imperial gallons
- 1 pound of propane = 919.86 cm3
- 1 pound of propane = 0.03 cubic feet
- 1 pound of propane = 0.00092 m3
Propane Gallon-per-Pound Chart
For your convenience, we’ve listed the most common conversion numbers in this propane weight chart (at the temp of 77°F):
| Weight of Propane at 77 F (lbs) | US Gallons |
| 1 lbs | 0.24 gal |
| 2 lbs | 0.49 gal |
| 3 lbs | 0.73 gal |
| 4 lbs | 0.97 gal |
| 5 lbs | 1.22 gal |
| 6 lbs | 1.46 gal |
| 7 lbs | 1.70 gal |
| 8 lbs | 1.95 gal |
| 9 lbs | 2.19 gal |
| 10 lbs | 2.43 gal |
| 20 lbs | 4.87 gal |
| 30 lbs | 7.30 gal |
| 40 lbs | 9.73 gal |
| 50 lbs | 12.17 gal |
| 60 lbs | 14.60 gal |
| 70 lbs | 17.03 gal |
| 80 lbs | 19.46 gal |
| 90 lbs | 21.90 gal |
| 100 lbs | 24.33 gal |
| 120 lbs | 29.20 gal |
| 200 lbs | 48.66 gal |
| 250 lbs | 60.83 gal |
| 300 lbs | 72.99 gal |
| 330 lbs | 80.29 gal |
| 400 lbs | 97.32 gal |
| 500 lbs | 121.65 gal |
| 1000 lbs | 243.31 gal |
| 2000 lbs | 486.62 gal |
| 2028 lbs | 493.43 gal |
| 2422 lbs | 589.29 gal |
| 2816 lbs | 685.16 gal |
This chart is for informational purposes only.
Takeaways – FAQs About the Weight of Propane
What does liquid propane mean?
Liquid propane refers to liquified propane gas, often labeled as LPG or LP- gas. Under atmospheric pressure and at room temperature, propane exists in the form of a gas. But compressed propane gas converts to liquid, making its storage and shipping much easier.
Is propane stored in liquid form?
Yes, in most cases, propane is stored in a liquid form. Propane is most commonly stored and distributed in pressurized tanks, but it’s often shipped overseas in pressurised vessels.
Why is propane stored as a liquid?
The main idea behind storing propane as a liquid is that it takes up much less space in storage tanks. As reported by the U.S. Department of Energy, under the pressure of 150 psi, the energy density of liquified propane is about 270 times greater than its gas form.
How do you calculate the weight of propane?
Liquid propane weighs 4.11 pounds per U.S. gallon at 77°F, which translates to a density of 0.493 g/cm3.
What does one Imperial gallon of propane weigh?
The weight of one Imperial gallon of propane at 77°F is 3.42.
How many kg does propane weigh?
The weight of one US gallon of propane at 77°F is 1.86 kg.
What is the density of propane?
The density of propane liquid is 0.493 g/cm³ or 493 kg/m³, or 30.78 lb/ft³ at 77°F.
How many pounds does 1 US gallon of propane weigh?
One US gallon of propane weighs 4.11 pounds at 77°F.
How many pounds do 2 US gallons of propane weigh?
Two US gallons of propane weigh 8.22 pounds at 77°F.
How many pounds do 3 US gallons of propane weigh?
Three US gallons of propane weigh 12.33 pounds at 77°F.
How many pounds do 4 US gallons of propane weigh?
Four US gallons of propane weigh 16.44 pounds at 77°F.
How many pounds do 5 US gallons of propane weigh?
Five US gallons of propane weigh 20.55 pounds at 77°F.
How many pounds do 6 US gallons of propane weigh?
Six US gallons of propane weigh 24.66 pounds at 77°F.
How many pounds do 7 US gallons of propane weigh?
Seven US gallons of propane weigh 28.77 pounds at 77°F.
How many pounds do 8 US gallons of propane weigh?
Eight US gallons of propane weigh 32.88 pounds at 77°F.
How many pounds do 9 US gallons of propane weigh?
Nine US gallons of propane weigh 36.99 pounds at 77°F.
How many pounds do 10 US gallons of propane weigh?
Ten US gallons of propane weigh 41.1 pounds at 77°F.
How many pounds do 20 US gallons of propane weigh?
Twenty US gallons of propane weigh 82.2 pounds at 77°F.
How many pounds do 22 US gallons of propane weigh?
Twenty two US gallons of propane weigh 90.42 pounds at 77°F.
How many pounds do 25 US gallons of propane weigh?
Twenty five US gallons of propane weigh 102.75 pounds at 77°F.
How many pounds do 30 US gallons of propane weigh?
Thirty US gallons of propane weigh 123.3 pounds at 77°F.
How many pounds do 40 US gallons of propane weigh?
Forty US gallons of propane weigh 164.4 pounds at 77°F.
How many pounds do 50 US gallons of propane weigh?
Fifty US gallons of propane weigh 205.5 pounds at 77°F.
How many pounds do 60 US gallons of propane weigh?
Sixty US gallons of propane weigh 246.6 pounds at 77°F.
How many pounds do 70 US gallons of propane weigh?
Seventy US gallons of propane weigh 287.7 pounds at 77°F.
How many pounds do 80 US gallons of propane weigh?
Eighty US gallons of propane weigh 328.8 pounds at 77°F.
How many pounds do 90 US gallons of propane weigh?
Ninety US gallons of propane weigh 369.9 pounds at 77°F.
How many pounds do 100 US gallons of propane weigh?
One hundred US gallons of propane weigh 411 pounds at 77°F.
How many pounds do 120 US gallons of propane weigh?
One hundred and twenty US gallons of propane weigh 493.2 pounds at 77°F.
How many pounds do 200 US gallons of propane weigh?
Two hundred US gallons of propane weigh 822 pounds at 77°F.
How many pounds do 250 US gallons of propane weigh?
Two hundred and fifty US gallons of propane weigh 1027.5 pounds at 77°F.
How many pounds do 300 US gallons of propane weigh?
Three hundred US gallons of propane weigh 1233 pounds at 77°F.
How many pounds do 325 US gallons of propane weigh?
Three hundred and twenty-five US gallons of propane weigh 1335.7 pounds at 77°F.
How many pounds do 400 US gallons of propane weigh?
Four hundred US gallons of propane weigh 1644 pounds at 77°F.
How many pounds do 500 US gallons of propane weigh?
Five hundred US gallons of propane weigh 2055 pounds at 77°F.
How many pounds do 1000 US gallons of propane weigh?
One thousand US gallons of propane weigh 4110 pounds at 77°F.
How many gallons is 1 pound of propane liquid?
The volume of 1 pound of propane liquid at 77°F is 0.243 gallons.
How many gallons are 2 pounds of propane liquid?
The volume of 2 pounds of propane liquid at 77°F is 0.486 gallons.
How many gallons are 3 pounds of propane liquid?
The volume of 3 pounds of propane liquid at 77°F is 0.730 gallons.
How many gallons are 4 pounds of propane liquid?
The volume of 4 pounds of propane liquid at 77°F is 0.973 gallons.
How many gallons are 5 pounds of propane liquid?
The volume of 5 pounds of propane liquid at 77°F is 1.217 gallons.
How many gallons are 6 pounds of propane liquid?
The volume of 6 pounds of propane liquid at 77°F is 1.460 gallons.
How many gallons are 7 pounds of propane liquid?
The volume of 7 pounds of propane liquid at 77°F is 1.703 gallons.
How many gallons are 8 pounds of propane liquid?
The volume of 8 pounds of propane liquid at 77°F is 1.946 gallons.
How many gallons are 9 pounds of propane liquid?
The volume of 9 pounds of propane liquid at 77°F is 2.190 gallons.
How many gallons are 10 pounds of propane liquid?
The volume of 10 pounds of propane liquid at 77°F is 2.433 gallons.
How many gallons are 20 pounds of propane liquid?
The volume of 20 pounds of propane liquid at 77°F is 4.866 gallons.
How many gallons are 22 pounds of propane liquid?
The volume of 20 pounds of propane liquid at 77°F is 5.353 gallons.
How many gallons are 25 pounds of propane liquid?
The volume of 25 pounds of propane liquid at 77°F is 6.083 gallons.
How many gallons are 30 pounds of propane liquid?
The volume of 30 pounds of propane liquid at 77°F is 7.29 gallons.
How many gallons are 40 pounds of propane liquid?
The volume of 40 pounds of propane liquid at 77°F is 9.73 gallons.
How many gallons are 50 pounds of propane liquid?
The volume of 50 pounds of propane liquid at 77°F is 12.16 gallons.
How many gallons are 60 pounds of propane liquid?
The volume of 60 pounds of propane liquid at 77°F is 14.59 gallons.
How many gallons are 70 pounds of propane liquid?
The volume of 70 pounds of propane liquid at 77°F is 17.03 gallons.
How many gallons are 80 pounds of propane liquid?
The volume of 80 pounds of propane liquid at 77°F is 19.46 gallons.
How many gallons are 90 pounds of propane liquid?
The volume of 90 pounds of propane liquid at 77°F is 21.90 gallons.
How many gallons are 100 pounds of propane liquid?
The volume of 100 pounds of propane liquid at 77°F is 24.33 gallons.
How many gallons are 120 pounds of propane liquid?
The volume of 120 pounds of propane liquid at 77°F is 29.20 gallons.
How many gallons are 200 pounds of propane liquid?
The volume of 200 pounds of propane liquid at 77°F is 48.66 gallons.
How many gallons are 250 pounds of propane liquid?
The volume of 250 pounds of propane liquid at 77°F is 60.83 gallons.
How many gallons are 300 pounds of propane liquid?
The volume of 300 pounds of propane liquid at 77°F is 72.99 gallons.
How many gallons are 325 pounds of propane liquid?
The volume of 325 pounds of propane liquid at 77°F is 79.08 gallons.
How many gallons are 400 pounds of propane liquid?
The volume of 400 pounds of propane liquid at 77°F is 97.32 gallons.
How many gallons are 500 pounds of propane liquid?
The volume of 500 pounds of propane liquid at 77°F is 121.65 gallons.
How many gallons are 1000 pounds of propane liquid?
The volume of 1000 pounds of propane liquid at 77°F is 243.31 gallons.
References:
https://gasinnovations.com/products/propane/
https://learnmetrics.com/propane-weight-per-gallon-how-much-does-gallon-of-propane-weigh-20-lb/
https://afdc.energy.gov/fuels/propane_basics.html
