How Can I Tell What Size Propane Tank I Have?

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Consumer liquid-propane tanks are used for gas grills, propane heaters and in campers or recreational vehicles for both cooking and heat. Residential propane tanks are large storage containers on a property and filled on site by a propane service. The liquid propane in these tanks heats your water, cooks your food and heats your home. A few measurements can tell you what size of propane tank you have.

Consumer Propane Tanks

Step 1

Measure the diameter of the tank.

Step 2

Measure the overall height of your propane tank. Include the base and the metal collar protecting the propane tank valve.

Step 3

Compare your measurements to the known measurements for consumer propane tanks to determine the size of tank you have. According to the Propane 101 website, a 20-pound propane tank measures 18 inches high and 12.5 inches in diameter. A 30-pound propane tank measures 24 inches high and 12.5 inches in diameter. A 40-pound propane tank measures 29 inches high and 12.5 inches in diameter. A 100-pound propane tank measures 48 inches high and 14.5 inches in diameter.

Residential Propane Tanks

Step 1

Measure the diameter of your tank.

Step 2

Measure the length of your propane tank from end to end.

Step 3

Measure the actual height of your tank without including the stand or base.

Step 4

Compare your measurements to standards of the American Society of Mechanical Engineers (ASME), available on the Mission Gas Co. website. A 250-gallon tank measures 30 to 31.5 inches in diameter, 86 1/2 to 94 inches in length and 38 to 39 1/4 inches in height. A 500-gallon tank measures 37 to 37.5 inches in diameter, 118 to 120 inches in length and 45 to 46 1/3 inches in height. A 1,000-gallon tank measures 41 inches in diameter, 190 to 192 inches in length and 49 to 50 1/2 inches in height.


Cecilia Harsch

Cecilia Harsch has been writing professionally since 2009. She writes mainly home improvement, health and travel articles for various online publications. She has several years of experience in the home-improvement industry, focusing on gardening, and a background in group exercise instruction. Harsch received her Certified Nurses Assistant license in 2004. She attended Tarrant County College and studied English composition.