Therms to kWh Converter
Translate natural gas usage from therms to kilowatt-hours so you can compare gas and electric consumption on the same scale. Enter the therms shown on your utility bill to see the equivalent kWh for energy budgeting, emissions tracking, or rate comparisons.
Approximation only. Utility-specific conversion factors may differ slightly.
Examples
- 10 therms ⇒ 293.00 kWh (≈ 0.293 MWh), roughly a week of winter heating for a small home.
- 25 therms ⇒ 732.50 kWh (≈ 0.733 MWh), helpful for comparing with electric furnace consumption.
- 125 therms ⇒ 3,662.51 kWh (≈ 3.663 MWh), equivalent to about 12.5 million BTU of natural gas.
- 2.4 therms ⇒ 70.32 kWh for a high-efficiency gas water heater cycle.
FAQ
What conversion factor is used?
The calculator multiplies therms by 29.300111 kWh, the standard U.S. EIA energy equivalence.
Can I compare to electricity rates?
Yes. Multiply the kWh result by your electric rate to estimate equivalent cost.
Does natural gas quality change the answer?
Minor variations occur because heating value depends on gas composition. Your utility may publish a monthly therm-to-kWh factor if you need more precise data.
How do I reverse the calculation?
Divide kWh by 29.300111 to estimate therms, or use the related kWh to Therms calculator for convenience.
Additional Information
- 1 therm equals 100,000 BTU, or 29.300111 kWh using the U.S. Energy Information Administration conversion factor.
- Multiply the kWh result by your electric tariff to estimate what the same heat load would cost with electric equipment.
- Divide kWh by 29.300111 to reverse the conversion or to sanity check your utility's published factor.
- Use this conversion when compiling greenhouse-gas inventories where natural gas and electricity must be expressed in the same units.
- For emissions tracking, multiply therms by your utility's CO₂ emission factor or convert the kWh result using the EPA eGRID factor.