Natural Gas Cost Calculator
Calculate your monthly and annual natural gas costs based on usage, rate per therm, and individual appliance consumption. Get accurate estimates of your natural gas bills.
CL
CalcLeap Editorial Team
Reviewed by certified professionals · Last updated April 1, 2026
Average US household: 40-100 therms/month
US average: $1.00-$1.50 per therm
Appliances
Furnace / Heating
Typical: 60,000-100,000 BTU/hr
Water Heater
Typical: 30,000-50,000 BTU/hr
Gas Stove / Range
Typical: 5,000-10,000 BTU/hr
Gas Dryer
Typical: 15,000-25,000 BTU/hr
About Natural Gas Costs
Natural gas is measured in therms (1 therm = 100,000 BTU). Understanding your gas usage helps you identify high-consumption appliances and opportunities to save money.
Average Natural Gas Consumption
- Heating-dominated climate: 80-120 therms/month in winter
- Moderate climate: 40-60 therms/month
- Warm climate: 10-30 therms/month
- Summer (hot water only): 10-20 therms/month
Tips to Reduce Natural Gas Bills
- Lower thermostat by 2-3°F (can save 5-10% on heating)
- Install programmable thermostat
- Seal air leaks around windows and doors
- Insulate attic and walls
- Service furnace annually
- Lower water heater temperature to 120°F
- Insulate water heater tank and hot water pipes
- Use cold water for laundry when possible
Understanding Your Gas Bill
Natural gas bills typically include:
- Supply charge: The cost per therm of gas consumed
- Delivery charge: Infrastructure and distribution costs
- Customer charge: Fixed monthly fee for service
- Taxes and fees: Vary by location
Disclaimer: Values are calculated using standard conversion factors. Actual costs may vary based on appliance efficiency, local rates, usage patterns, and seasonal factors. This calculator provides estimates for planning purposes.