How Much Does A 20 Lb Propane Tank Weigh Full

A 20 lb propane tank is a popular choice for a wide variety of applications, including grilling, heating, and camping. While many people are familiar with this tank size, understanding its weight when filled is essential for multiple reasons. Whether you’re preparing for a family barbecue or planning a camping trip, knowing how much a full 20 lb propane tank weighs helps ensure safe handling, appropriate storage, and the proper transportation of the tank.

The 20 lb propane tank is the standard size for many gas grills, small outdoor heaters, and camping stoves. This tank is designed to hold 20 pounds of liquid propane (LP), but its full weight depends on several factors, including the material of the tank, the empty weight of the tank itself, and the amount of propane it holds.

In this article, we will provide a detailed breakdown of how much a 20 lb propane tank weighs full, discuss the different types of 20 lb propane tanks available, and explore important factors such as weight factors, cost, and usage considerations. By the end of this article, you’ll have a comprehensive understanding of what affects the weight of your propane tank and how to choose the right one for your needs.

What Is a 20 Lb Propane Tank Weigh Full?

A 20 lb propane tank refers to the amount of propane it holds, not including the weight of the tank itself. The tank is designed to hold 20 pounds of liquid propane, but the total weight of the tank will be much more than just the weight of the gas itself. The weight of a full 20 lb propane tank is the sum of the empty weight of the tank and the weight of the propane inside it.

Empty Weight of a 20 Lb Propane Tank

The empty weight of a 20 lb propane tank typically ranges between 17 lbs and 20 lbs (7.7 kg and 9.07 kg), depending on the material used in the tank’s construction. This weight includes the metal body, valve, collar, and base of the tank.

The empty weight varies because propane tanks can be made from different materials such as steel, aluminum, or composite materials, which affect the overall weight of the tank when empty.

Weight of Propane

The weight of liquid propane is relatively constant and can be easily calculated. Propane weighs about 4.24 lbs per gallon (1.92 kg per gallon). A 20 lb propane tank holds approximately 4.7 gallons of propane, which equates to about 20 lbs of propane (9.07 kg).

So, the weight of propane inside the tank is 20 lbs (9.07 kg), regardless of the material of the tank itself.

Full Weight of a 20 Lb Propane Tank

When the 20 lb propane tank is filled, the full weight is calculated by adding the weight of the propane to the empty weight of the tank. This results in the following:

Steel Tank: A steel 20 lb propane tank typically weighs between 37 and 40 lbs (16.8 and 18.14 kg) when full.
Aluminum Tank: An aluminum 20 lb propane tank typically weighs between 35 and 37 lbs (15.9 and 16.8 kg) when full.
Composite Tank: A composite 20 lb propane tank typically weighs between 32 and 34 lbs (14.5 and 15.4 kg) when full.

The weight of the propane inside is constant at 20 lbs (9.07 kg), but the weight of the tank itself depends on the material and construction of the tank.

Types of 20 Lb Propane Tanks Weigh Full

There are three primary types of 20 lb propane tanks: steel, aluminum, and composite. Each type has its unique material properties, which influence the tank’s empty weight, durability, and portability. Let’s take a closer look at each type.

1. Steel 20 Lb Propane Tank

Material: Made from steel, which is heavy and durable.
Empty Weight: Typically weighs between 17 to 20 lbs (7.7 to 9.07 kg).
Full Weight: When full, the total weight is 37 to 40 lbs (16.8 to 18.14 kg).
Features: Steel tanks are the most common and cost-effective. They are durable and reliable, but they are more prone to rusting over time if not properly maintained. Steel tanks are ideal for everyday use but may require periodic maintenance to prevent corrosion, especially if exposed to the elements.

2. Aluminum 20 Lb Propane Tank

Material: Made from aluminum, which is lightweight and corrosion-resistant.
Empty Weight: Typically weighs around 15 to 17 lbs (6.8 to 7.7 kg).
Full Weight: The full weight is typically 35 to 37 lbs (15.9 to 16.8 kg).
Features: Aluminum tanks are rust-resistant, lightweight, and ideal for humid or coastal environments. They tend to be more expensive than steel tanks, but their lightweight nature makes them easier to handle and transport. Aluminum tanks are also more durable in the long run because they resist corrosion better than steel.

3. Composite 20 Lb Propane Tank

Material: Made from composite materials (a blend of plastic and steel).
Empty Weight: These tanks are lighter than both steel and aluminum, typically weighing 12 to 14 lbs (5.4 to 6.3 kg).
Full Weight: When filled with propane, the full weight is typically 32 to 34 lbs (14.5 to 15.4 kg).
Features: Composite tanks are durable, rust-resistant, and extremely portable, making them ideal for camping or outdoor activities. These tanks are often chosen for their lightweight nature, which makes them easier to carry than traditional steel or aluminum tanks. However, composite tanks are usually more expensive than their steel counterparts due to their lightweight and rust-resistant properties.

How Much Does a 20 Lb Propane Tank Weigh Full?

To summarize, the full weight of a 20 lb propane tank is dependent on the material of the tank. Here is a quick overview:

Steel Tank: 37 to 40 lbs (16.8 to 18.14 kg) when full.
Aluminum Tank: 35 to 37 lbs (15.9 to 16.8 kg) when full.
Composite Tank: 32 to 34 lbs (14.5 to 15.4 kg) when full.

Each tank is filled with approximately 20 lbs of propane (9.07 kg), but the empty weight of the tank varies depending on its construction. The material used in the tank significantly affects its durability, cost, and portability.

Comparison Table: 20 Lb Propane Tank Full Weight

Here’s a detailed comparison of the different types of 20 lb propane tanks, their empty weight, full weight, and other key specifications:

Tank Type	Empty Weight (lbs)	Empty Weight (kg)	Full Weight (lbs)	Full Weight (kg)	Material	Features	Cost Range (USD)	Durability	Ease of Handling	Dimensions (inches)	Average Propane Weight (lbs)
Steel 20 Lb Tank	17-20	7.7-9.07	37-40	16.8-18.14	Steel	Durable, reliable, cost-effective	$30 – $60	High	Moderate	12.5″ D x 18″ H	20 lbs (9.07 kg)
Aluminum 20 Lb Tank	15-17	6.8-7.7	35-37	15.9-16.8	Aluminum	Lightweight, corrosion-resistant	$50 – $80	Very High	Easy	12″ D x 17.5″ H	20 lbs (9.07 kg)
Composite 20 Lb Tank	12-14	5.4-6.3	32-34	14.5-15.4	Composite	Lightweight, rust-resistant, portable	$60 – $100	High	Very Easy	12″ D x 17″ H	20 lbs (9.07 kg)

Basics of a 20 Lb Propane Tank Weigh Full Weight

When considering a 20 lb propane tank’s full weight, there are several important things to keep in mind:

Propane Weight: The propane in the tank weighs about 20 lbs (9.07 kg), which is consistent across all types of tanks.
Tank Material: The empty weight varies depending on the material (steel, aluminum, or composite).
Tank Dimensions: The size of the tank and its design (e.g., high vs. long) can influence both the empty and full weight of the tank.

Factors Influencing a 20 Lb Propane Tank Weigh Full Weight

Understanding the full weight of a 20 lb propane tank is essential for safe handling, transportation, and storage. While the nominal weight refers to the amount of propane the tank holds, several factors contribute to the actual full weight. These factors include the tank’s material, the manufacturer, and the specifics of propane filling practices. Let’s delve into each of these elements to gain a comprehensive understanding.

1. Material of the Tank

The material from which a propane tank is constructed plays a significant role in its empty weight, which, when combined with the propane, determines the total weight.

Steel Tanks: Steel is a dense and durable material, making steel tanks heavier. A typical steel 20 lb propane tank has an empty weight ranging from 17 to 20 lbs (7.7 to 9.07 kg). When filled with 20 lbs (9.07 kg) of propane, the total weight is approximately 37 to 40 lbs (16.8 to 18.14 kg).
Aluminum Tanks: Aluminum tanks are lighter than steel tanks due to the material’s lower density. An aluminum 20 lb propane tank typically weighs between 15 to 17 lbs (6.8 to 7.7 kg) when empty. With 20 lbs (9.07 kg) of propane, the total weight is around 35 to 37 lbs (15.9 to 16.8 kg).
Composite Tanks: Composite tanks, made from a combination of materials like plastic and fiberglass, are the lightest. These tanks usually weigh between 12 to 14 lbs (5.4 to 6.3 kg) when empty. Including 20 lbs (9.07 kg) of propane, the full weight is approximately 32 to 34 lbs (14.5 to 15.4 kg).

The choice of material affects not only the weight but also the tank’s durability, resistance to corrosion, and ease of handling.

2. Manufacturer Variations

Different manufacturers may use slightly different materials or designs, leading to variations in the tank’s empty weight.

Tare Weight (TW): The tare weight is the weight of the empty tank and is typically stamped on the tank’s collar. For a 20 lb propane tank, the tare weight usually ranges from 16 to 18 lbs (7.26 to 8.16 kg). However, this can vary slightly depending on the manufacturer and the specific design of the tank.
Construction Differences: Variations in construction methods, such as welding techniques, wall thickness, and valve types, can also influence the tank’s weight. For instance, tanks with thicker walls or additional safety features may weigh more.
Quality Control: Manufacturers with stringent quality control processes may produce tanks with more consistent weights, while others might have slight discrepancies between individual tanks.

It’s essential to check the tare weight stamped on your specific tank to determine its exact empty weight.

3. Propane Filling Practices

The amount of propane filled into a tank can vary slightly, affecting the total weight.

Standard Filling: Propane tanks are typically filled to 80% of their capacity to allow for the expansion of the gas due to temperature changes. For a 20 lb propane tank, this equates to approximately 16 lbs (7.26 kg) of propane. This practice ensures safety by preventing over-pressurization.
Overfilling Risks: Filling a tank beyond the 80% capacity can be hazardous. Propane expands with heat, and overfilling leaves insufficient room for this expansion, increasing the risk of tank rupture or valve failure.
Residual Propane: Even when a tank is considered “empty,” it may still contain a small amount of residual propane. This leftover gas adds a fraction of a pound to the tank’s weight.
Temperature Effects: The density of propane changes with temperature. Colder temperatures cause propane to contract, potentially resulting in less gas being filled into the tank. Conversely, warmer temperatures can cause propane to expand, leading to a fuller tank and a slightly higher weight.

4. Additional Considerations

Several other factors can influence the full weight of a 20 lb propane tank:

Tank Age and Condition: Older tanks may have accumulated rust or corrosion, which can add weight. Additionally, tanks that have been subjected to wear and tear might have slightly different weights compared to new ones.
Valve Types: The type of valve installed on the tank can impact its weight. For example, tanks equipped with Overfill Protection Devices (OPDs) may weigh slightly more due to the additional components.
Protective Coatings: Some tanks are coated with protective materials to prevent corrosion. These coatings can add a small amount of weight to the tank.
Manufacturing Tolerances: Minor variations in manufacturing processes can lead to slight differences in the weight of individual tanks, even among those of the same model and size.

Why a 20 Lb Propane Tank Weigh Full Weight Matters

Knowing the full weight of a 20 lb propane tank is critical for several reasons. Whether you’re transporting, storing, or using the tank, understanding its weight ensures safe handling, appropriate storage, and compliance with regulations. Below, we will explore in more detail why this knowledge is essential for both everyday use and for meeting safety standards.

1. Safe Transportation

Transporting a full 20 lb propane tank safely is one of the most important considerations when dealing with this equipment. The weight of the tank, combined with the propane inside, can make it difficult to handle without the proper tools. The full weight of a 20 lb propane tank, which typically ranges from 37 to 40 lbs (16.8 to 18.14 kg) depending on the material, may pose risks if improperly handled.

Knowing the weight of the tank allows you to select the right equipment for transportation. Trolleys, carriers, or even dollies may be required to move the tank safely, especially if you need to transport it over long distances or across uneven terrain. Using a trolley or dolly ensures that the weight is distributed evenly, reducing the risk of injury or accidents caused by carrying the tank manually. For people with limited strength or mobility, knowing the full weight ensures they can seek help or use mechanical aids to safely manage the tank.

Additionally, understanding the weight will help when loading the tank into vehicles. For instance, a pickup truck or cargo van may be necessary for larger quantities of full tanks, as lifting and loading can strain the physical capabilities of an individual.

2. Proper Storage

Safe and appropriate storage of a 20 lb propane tank is crucial for maintaining safety. Storing a propane tank improperly can cause accidents such as leaks or, in the worst case, explosions. To avoid these dangers, it is important to know the weight of the full tank when deciding where to place it.

The weight of a full 20 lb propane tank influences where it can be stored. For example, the storage surface must be sturdy enough to support the weight of the tank. Wooden floors, porous materials, or unstable surfaces may not be able to bear the load, and this can lead to the tank falling or tipping over, potentially causing a gas leak or other safety hazards. Additionally, a stable and secure location ensures that the tank will not roll, fall, or shift accidentally.

Many people store propane tanks in outdoor sheds, garages, or near gas grills. However, if you’re placing the tank in confined spaces, it’s essential to ensure that the area can safely handle the combined weight of the tank and the gas. Furthermore, ventilation is essential in such areas, especially to avoid gas buildup in the event of a leak.

3. Regulatory Compliance

In various regions, there are regulatory requirements for transporting and storing propane tanks, particularly concerning their weight and how they are handled. These regulations ensure that propane tanks are safely transported, stored, and maintained to prevent accidents, leaks, and other hazards.

For example, transportation regulations may include limits on how many full propane tanks can be stored in a vehicle at once. Some areas mandate that propane tanks must be secured during transportation to prevent them from rolling or shifting during transit. Understanding the weight of the full tank is essential for ensuring that it is secured appropriately in a vehicle. Most commercial vehicles or trucks have specific weight capacities, so knowing the total weight of the tanks will help ensure compliance with weight limits and prevent overloading.

Additionally, local laws or building codes may specify storage requirements for propane tanks, including how far the tank must be from structures or heat sources, and the types of surfaces on which it should be placed. In commercial settings, knowing the weight and proper storage regulations helps ensure compliance with Occupational Safety and Health Administration (OSHA) standards and other safety protocols.

In some cases, propane tank manufacturers or retailers provide guidelines on how to store and transport their products based on their specific weight and design. These guidelines are meant to ensure user safety and minimize risk during routine operations.

How Much Does a 20 Lb Propane Tank Weigh Full Cost?

The cost of a 20 lb propane tank is typically influenced by its material and additional features such as gauges, protective covers, or valves. Here’s a breakdown:

Steel Tanks: $30 to $60, the most affordable option.
Aluminum Tanks: $50 to $80, the ideal choice for lightweight and corrosion-resistant tanks.
Composite Tanks: $60 to $100, offering a high portability option for campers and those seeking lightweight solutions.

Standard Dimensions/Height of a 20 Lb Propane Tank Weigh Full in Different Regions

Region	Tank Type	Dimensions (inches)	Dimensions (cm)
USA	Steel 20 Lb Tank	12.5″ D x 18″ H	31.75 x 45.7
USA	Aluminum 20 Lb Tank	12″ D x 17.5″ H	30.5 x 44.5
UK	Steel 20 Lb Tank	12.5″ D x 18″ H	31.75 x 45.7
UK	Composite 20 Lb Tank	12″ D x 17″ H	30.5 x 43.18

Conclusion

The full weight of a 20 lb propane tank is critical for safe handling, transportation, and storage. Whether you choose a steel, aluminum, or composite tank, understanding its weight helps ensure that you select the right equipment, handle the tank safely, and comply with local safety regulations. With a typical weight range between 37 to 40 lbs (16.8 to 18.14 kg) when filled, it is crucial to select the tank type that suits your needs.

Fun Facts

A composite 20 lb tank is 5-10 lbs lighter than a steel tank.
The propane inside the tank always weighs 20 lbs (9.07 kg).
Aluminum tanks are more resistant to corrosion and lighter than steel tanks.
20 lb propane tanks are great for barbecues, outdoor heaters, and camping stoves.