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.

Help and info

Kitchen Usage Typical
BTUs/hr
$ Monthly $ Yearly
Range - surface unit
Range oven - bake unit
Range - broiler unit
Range Pilot Light - More Info
Dishwasher - More Info
Laundry Usage Typical
BTUs/hr
$ Monthly $ Yearly
Clothes dryer
Top load washer - More Info
Front load washer - More Info
Bathroom Usage   $ Monthly $ Yearly
Shower - More Info
Bathtub gallon(s) - More Info
Seasonal Usage Typical
BTUs/hr
$ Monthly $ Yearly
Fireplace - More Info
Fireplace Pilot Light - More Info
Natural gas grill
Swimming pool heater - More Info
Additional pilot lights Usage Typical
BTUs/hr
$ Monthly $ Yearly
Water Heater - More Info
Furnace - More Info
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 12 month weighted average cost of gas between Minnesota Energy Resources' NNG and Consolidated service territories is $0.74968 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.