Propane Tank BTU Calculator
Here's a comprehensive table summarizing the key information about propane tank sizes and their corresponding BTU outputs:
| Tank Size | BTU Output (Approximate) | Ideal Use |
|---|---|---|
| 20 lbs | 45,000 | Small portable appliances, camping1 |
| 30 lbs | 60,000 | Residential use for small appliances |
| 40 lbs | 90,000 | Residential use for multiple small appliances |
| 100 lbs | 200,000 | Residential heating, small commercial applications1 |
| 250 lbs | 500,000 | Larger residential or small commercial use |
| 420 lbs | Not specified | Home use (non-primary heating), water heaters, fireplaces3 |
| 500 lbs | 1,200,000 | Primary home heating, small commercial heating3 |
| 1,000 lbs | 2,500,000 | Commercial or agricultural operations with high BTU loads3 |
Additional Important Information:
- BTU per Gallon: 1 gallon of propane produces 91,452 BTU4.
- Temperature Effects: The BTU output of a propane tank can vary based on temperature. For example, a 100 lb tank at 0°F produces 113,000 BTU, while at 20°F it produces 167,000 BTU1.
- Tank Fullness: As the tank empties, its BTU output decreases. A 100 lb tank at 50% capacity produces about 64,000 BTU at 0°F1.
- Efficiency Comparison: Propane burns more efficiently than natural gas. 1 cubic foot of propane produces 2,516 BTU, while 1 cubic foot of natural gas produces 1,030 BTU4.
- Sizing for Heaters: A general rule of thumb is to calculate 75,000 BTU per 100 lb tank for heater sizing1.
- Tank Placement: Larger tanks (500 gallons and above) must be installed at least 10 feet from any building or property line3.
This table and additional information provide a comprehensive overview of propane tank sizes, their BTU outputs, and important factors to consider when selecting and using propane tanks for various applications.