UrbiTools

Therms to kWh Converter

Convert therms to kilowatt-hours and back — the gas-bill unit against the electricity-bill unit.

Convert therms ⇄ kWh

293.0712 kWh
10 therms = 293.0712 kWh

Formula: 10 therms (therms × 29.3071) = 293.0712 kWh

How the therms to kwh conversion works

The conversion is: kilowatt-hours = therms × 29.3071. One therm is defined as 100,000 BTU, and since 1 kWh = 3,412.14 BTU, one therm is 100,000 ÷ 3,412.14 = 29.3071 kWh. Going the other way, therms = kWh ÷ 29.3071.

The gas-bill use case: natural gas is billed in therms (US) while electricity is billed in kWh, so comparing heating costs means converting one to the other. A home using 50 therms of gas a month has used about 1,465 kWh of energy — directly comparable to an electricity bill. For the BTU step in between, see BTU to kWh.

Worked example: 10 therms is 10 × 29.3071 = 293.07 kWh. And 100 kWh of electricity is 100 ÷ 29.3071 = 3.41 therms of gas energy.

Handy benchmarks: 1 therm = 29.31 kWh, 5 therms = 146.54 kWh, 10 therms = 293.07 kWh and 50 therms = 1,465.36 kWh.

therms to kwh converter questions

How many kWh are in 1 therm?
29.307 kWh. One therm is 100,000 BTU, and 100,000 ÷ 3,412.14 = 29.3071 kWh.
How do I convert therms to kWh?
Multiply by 29.3071: kWh = therms × 29.3071. So 10 therms is 293.07 kWh.
What is a therm?
A therm is a unit of heat energy equal to 100,000 BTU, used to bill natural gas in the US. It is roughly the energy in 100 cubic feet of natural gas (one CCF is about 1.037 therms, varying with gas composition).
How many therms is 100 kWh?
3.41 therms. 100 ÷ 29.3071 = 3.4121, rounded to 3.41 therms.
How do I convert kWh back to therms?
Divide by 29.3071: therms = kWh ÷ 29.3071. Switch the direction above to do it.

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Sources & official guidance

1 therm = 100,000 BTU = 29.3071 kWh. Gas energy content per CCF varies slightly by supplier. See our disclaimer.