US therm used for natural gas energy.
US therms to kWhs Converter — therm to kWh
Convert US therm (therm) to kWh (kWh) using the exact conversion factor (1 us therm = 29.30011111 kwh). See the formula, worked examples, conversion table, history, and common uses.
US therms to kWhs converter
Converter
Energy Converter
Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
A kilowatt-hour is 3.6 million joules.
Result = input x 1.054804e+8 / 3.6e+6.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting US therms to kWhs
US therm and kWh both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: US therm used for natural gas energy, and a kilowatt-hour is 3.6 million joules.
Formula
kwhs = us therms × 29.3001111111
This factor comes from each unit's defined relationship to the category's base unit: 1 us therm equals 105480400 base units, and 1 kwh equals 3600000 base units, so dividing one by the other gives the direct us therm-to-kwh factor of 29.3001111111.
Simple example
1 therm × 29.30011111 = 29.30011111 kWh
1 us therm = 29.30011111 kwhs.
Real-world example
100 therm × 29.30011111 = 2,930.011111 kWh
100 us therms = 2,930.011111 kwhs.
Conversion table
| US therm (therm) | kWh (kWh) |
|---|---|
| 1 therm | 29.30011111 kWh |
| 10 therm | 293.0011111 kWh |
| 100 therm | 2,930.011111 kWh |
| 500 therm | 14,650.05556 kWh |
| 1,000 therm | 29,300.11111 kWh |
| 2,000 therm | 58,600.22222 kWh |
Reverse conversion: kWh to US therm
29.30011111 kWh × 0.03412956341 = 1 therm
29.30011111 kwhs = 1 us therms.
us therms = kwhs × 0.034129563407
For a page dedicated to this direction, see kWh to US therm.
Understanding the US therm (therm)
US therm used for natural gas energy.
Understanding the kWh
kWh (kWh) measures energy. A kilowatt-hour is the energy of one kilowatt of power sustained for one hour: exactly 3,600,000 joules. It is classified as a Non-SI unit accepted for use with SI.
Where it's used: Used worldwide for electricity billing
Uses of the kWh today
- Residential and commercial electricity billing worldwide
- Battery capacity ratings (especially electric vehicles)
- Energy policy and grid-scale power statistics
History of the kWh
The kilowatt-hour became the standard electricity billing unit as power utilities expanded in the late 19th and early 20th centuries, since it conveniently matches the scale of typical household electricity consumption, unlike the much smaller joule.
Historical origin. kWh was not the invention of a single named person; it developed through the process described above.
kWh — sources
- BIPM SI Brochure — Non-SI units accepted for use with SI — Lists the kilowatt-hour among accepted non-SI energy units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kwhs are in 1 us therm?
1 us therm equals 29.30011111 kwhs, using the exact defined conversion factor rather than an estimate.
How do I convert us therm to kwh?
Multiply the us therm value by 29.30011111. The converter above does this instantly to whatever precision you set.
How do I convert kwh back to us therm?
Use the reverse factor: 1 kwh equals 0.0341295634 us therms. You can also use the swap control in the converter above to flip the direction instantly.
What is a us therm?
US therm (therm) is a unit of energy.
What is a kwh?
kWh (kWh) measures energy. A kilowatt-hour is the energy of one kilowatt of power sustained for one hour: exactly 3,600,000 joules. It is classified as a Non-SI unit accepted for use with SI.
Is the us therm to kwh conversion exact?
Yes. A kilowatt-hour is the energy of one kilowatt of power sustained for one hour: exactly 3,600,000 joules. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.