Natural gas appliance calculator

It's easy to determine the costs of running your appliances. You can use this tool to determine the approximate energy usage and cost of most major natural gas appliances. The natural gas appliance calculator is an estimate cost of appliances. Actual costs may vary between customers. For the most accurate estimate of your home, complete an energy audits.

Kitchen Usage Typical
BTUs/hr
$ Monthly $ Yearly
Range - surface unit
Range oven - bake unit
Range - broiler unit
Range Pilot Light
Dishwasher
Laundry Usage Typical
BTUs/hr
$ Monthly $ Yearly
Clothes dryer
Top load washer
Front load washer
Bathroom Usage   $ Monthly $ Yearly
Shower
Bathtub gallon(s)
Seasonal Usage Typical
BTUs/hr
$ Monthly $ Yearly
Fireplace
Fireplace Pilot Light
Natural gas grill
Swimming pool heater
Additional pilot lights Usage Typical
BTUs/hr
$ Monthly $ Yearly
Water Heater
Furnace
Total    

Natural gas is measured in therms or BTUs. A therm is a measurement of the amount of heat energy in natural gas, equal to 100,000 BTUs. A BTU, or British Thermal Unit, is the quantity of heat required to raise the temperature of one pound of water by one degree Fahrenheit. The current charge for natural gas from WPS is $0.5809 per therm. If you would like to change the rate used in the calculations above, enter a new rate below.

$ per therm

Gas calculator - equation

Cost to operate = usage (hours or load) x (BTUs/100,000) x price per therm
OR
Cost to Operate = usage (hours or load) x therms x price per therm

Conversion table

  • 1 BTU = 0.293 watt hours
  • 100,000 BTU = 1 therm
  • 3,413 BTU = 1 kilowatt hour

Common BTU ratings

  • Boilers: 100,000 - 200,000 BTUs/hr*
  • Boilers (High Efficiency): 80,000 - 160,000 BTUs/hr*
  • Dryer: 22,000 BTUs/hr
  • Furnace: 100,000 - 150,000 BTUs/hr*
  • Furnace (High Efficiency): 75,000 - 100,000 BTUs/hr*
  • Garage Unit Heaters: 30,000 - 100,000 BTUs/hr
  • Gas Fireplace (standard) 25,000 - 35,000 BTUs/hr
  • Generator (standby): 200,000 - 300,000 BTUs/hr
  • Outdoor Grill: 25,000 - 40,000 BTUs/hr
  • Pool Heater: 199,000 - 400,000 BTUs/hr
  • Range: 60,000 BTUs/hr
  • Range (Commercial): 120,000 - 225,000 BTUs/hr
  • Spa Tub: 100,000 - 200,000 BTUs/hr
  • Tank Water Heater: 35,000 - 60,000 BTUs/hr*
  • Tankless Water Heater: 140,000 - 200,000 BTUs/hr*

* Multiple equipment may be used to total the BTUs listed.