How many gallons are in 100 lb propane tank

What size propane tank do you need?

Tank sizes range from portable 20-lb. containers to tanks that can hold over 2,000 gallons. The size of your propane tank will depend on the size of your home as well as the number and size of appliances using propane.

Your geographical location and local climate can also play a role in choosing your propane tank size. For example, a tank for heating in milder climates may not need to be as big as a tank for heating in a colder climate. This guide can help you determine the right size tank for your needs and location.

Review the propane tank size guide below for more information on propane tank sizes. It is important to note that a propane tank is only able to be filled to 80%. The tanks details will highlight how many gallons you get when full.

This guide provides sizes and usage for the most common propane tanks for home use. Common commercial tank size information can be found here.

Please note that there may be slight variances in dimensions by manufacturer.

1000 Gallon Propane Tank

Dimensions: 16' 2" long and 41" in diameter

Uses: Home heating for larger square footage homes or homes with all appliances running on propane. 

A 1000 gallon propane tank holds 800 gallons when full.

500 Gallon Propane Tank

Dimensions: 9' 11" long and 37.5" in diameter

Uses: Primarily used for home heating or homes with 2-3 propane appliances such as supplemental or space heaters, hot water heaters, and generators. 

A 500 gallon propane tank holds 400 gallons of propane when full.

250 Gallon Propane Tank

Dimensions: 7'10" long and 30" in diameter

Uses: Supplemental heating or 2 home appliances including water heaters, generators, and pool heaters.

A 250 gallon propane tank holds 200 gallons of propane when full.

120 Gallon Propane Tank

Dimensions: 4'6" in height and 30" in diameter

Uses: 1-2 residential appliances. Commonly used for a hot water heater or space heater alone, or with another small appliance like a dryer or cooktop. 

A 120 gallon propane tank is also commonly referred to as 420 lb propane tank. 120 gallon propane tanks hold 96 gallons of propane when full.

20 lb Propane Tank

Dimensions: 1' 6" in height and 1' in diameter.

Uses: Propane grills, generators, patio heaters, and other outdoor equipment. To purchase or exchange a 20 lb tank, find a location near you.

20 pound propane tanks are often referred to as grill cylinders and hold 4.6 gallons of propane when full.

Propane tanks can be placed either above ground or underground.

Above Ground Propane Tanks

Aboveground come in several common sizes ranging from 100 gallons to 1,500 gallons. Above ground tanks cost less and are quicker to install than below ground propane tanks. They also allow for easier access for maintenance. Unlike underground tanks, above ground tanks are visible but can be hidden with landscaping or fencing, just make sure to check your local codes and safety requirements.

Underground Propane Tanks

Underground propane tanks come in multiple sizes ranging from 250 gallons to 1,500 gallons. Underground propane tanks handle colder and extreme temperatures better than above ground tanks. Underground tanks may also increase the perceived value of your home when compared to an above- ground tank since only the tank dome is exposed for filling and maintenance. Below ground tank installation requires excavation and may also require a permit in certain jurisdictions. Below ground tanks are more costly and take longer to install than above ground tanks.

Buying & Installing Your Propane Tank

AmeriGas Professionals will help you through the process of selecting a tank for your home.

Residential customers can Get a Quote online.

AmeriGas representatives are always available at 1-800-AMERIGAS. Just a few quick questions and our representative will be able to provide you with:

• A recommended tank size
• A price quote
• Details on the installation process
• Assistance with any local permits and paperwork (if necessary)
• An installation date that works best for you

Your initial service may include a survey of your property to provide the best recommendations for tank size and location. Your installation will include a walk-through of your new AmeriGas propane tank system and safety procedures.

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