Propane Usage Calculator
Calculate propane consumption based on appliance BTU rating and usage hours.
See gallons or liters per month.
Propane Usage
Propane consumption is calculated from appliance BTU rating and usage time.
Gallons per hour = BTU rating / 91,500
Gallons per month = Gallons per hour × Hours per day × 30
Where 91,500 BTU = energy content of 1 gallon of propane.
Unit conversions:
- 1 gallon of propane = 91,500 BTU
- 1 liter of propane = 24,200 BTU
- 1 gallon = 3.785 liters
Common propane appliance BTU ratings:
- Furnace: 60,000–100,000 BTU/h
- Water heater (tank): 30,000–50,000 BTU/h
- Tankless water heater: 150,000–200,000 BTU/h
- Gas range/oven: 40,000–65,000 BTU/h (all burners)
- Gas fireplace: 20,000–40,000 BTU/h
- Gas dryer: 20,000–25,000 BTU/h
- Pool heater: 200,000–400,000 BTU/h
- Patio heater: 40,000–48,000 BTU/h
Average propane costs: $2.50–$4.00/gallon depending on region and season.