US therm used for natural gas energy.
US therms to Watt-hours Converter — therm to Wh
Convert US therm (therm) to Watt-hour (Wh) using the exact conversion factor (1 us therm = 29,300.11111 watt-hour). See the formula, worked examples, conversion table, and common uses.
US therms to Watt-hours 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 watt-hour is 3,600 joules.
Result = input x 1.054804e+8 / 3600.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting US therms to Watt-hours
US therm and Watt-hour 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 watt-hour is 3,600 joules.
Formula
watt-hours = us therms × 29300.1111111
This factor comes from each unit's defined relationship to the category's base unit: 1 us therm equals 105480400 base units, and 1 watt-hour equals 3600 base units, so dividing one by the other gives the direct us therm-to-watt-hour factor of 29300.1111111.
Simple example
1 therm × 29300.11111 = 29,300.11111 Wh
1 us therm = 29,300.11111 watt-hours.
Real-world example
100 therm × 29300.11111 = 2,930,011.111 Wh
100 us therms = 2,930,011.111 watt-hours.
Conversion table
| US therm (therm) | Watt-hour (Wh) |
|---|---|
| 1 therm | 29,300.11111 Wh |
| 10 therm | 293,001.1111 Wh |
| 100 therm | 2,930,011.111 Wh |
| 500 therm | 14,650,055.56 Wh |
| 1,000 therm | 29,300,111.11 Wh |
| 2,000 therm | 58,600,222.22 Wh |
Reverse conversion: Watt-hour to US therm
1 Wh × 0.00003412956341 = 0.0000341296 therm
1 watt-hour = 0.0000341296 us therms.
us therms = watt-hours × 0.000034129563407
For a page dedicated to this direction, see Watt-hour to US therm.
Understanding the US therm (therm)
US therm used for natural gas energy.
Understanding the Watt-hour
Watt-hour (Wh) measures energy. The energy delivered by one watt of power sustained for one hour — equal to 3,600 joules. It is classified as a metric derived energy unit.
Where it's used: Universal — standard consumer-electronics and battery energy unit worldwide
Wh vs. kWh. The same unit at different scales: 1,000 Wh equals 1 kWh. Wh suits small consumer-electronics batteries; kWh is used for household electricity billing and larger energy storage.
Uses of the Watt-hour today
- Phone, laptop, and power-bank battery capacity ratings
- Electric-vehicle battery capacity specifications
- Small-scale renewable energy (solar panel) output ratings
Watt-hour — sources
- BIPM SI Brochure — Watt-hour as a common energy unit derived from the coherent SI units watt and second (via the hour).
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many watt-hours are in 1 us therm?
1 us therm equals 29,300.11111 watt-hours, using the exact defined conversion factor rather than an estimate.
How do I convert us therm to watt-hour?
Multiply the us therm value by 29300.11111. The converter above does this instantly to whatever precision you set.
How do I convert watt-hour back to us therm?
Use the reverse factor: 1 watt-hour equals 0.0000341296 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 watt-hour?
Watt-hour (Wh) measures energy. The energy delivered by one watt of power sustained for one hour — equal to 3,600 joules. It is classified as a metric derived energy unit.
Is the us therm to watt-hour conversion exact?
Yes. Both us therm and watt-hour are defined by fixed standards rather than physical artifacts, so the factor of 29300.11111 used above is exact to as many digits as you choose to display.
What is the difference between wh vs. kwh?
The same unit at different scales: 1,000 Wh equals 1 kWh. Wh suits small consumer-electronics batteries; kWh is used for household electricity billing and larger energy storage.