Power and Energy
thermtoWh
Convert US therms (therm) to watt-hours (Wh).
Factor1 therm = 29300.11 Wh
Converter
therm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Wh
Rendered to 6 significant figures.
Formula
Formula
Wh = therm × 29300.11
Multiply any value in US therms by 29300.11 to obtain the value in watt-hours.
Worked example
Convert 1 therm to Wh.
- 01Start with 1 therm.
- 02Multiply by the conversion factor: 1 × 29300.11 = 29300.1 Wh.
Result1 therm = 29300.1 Wh
Conversion table
| therm | Wh |
|---|---|
| 1 | 29300 |
| 2 | 58600 |
| 5 | 1.4650e+5 |
| 10 | 2.9300e+5 |
| 20 | 5.8600e+5 |
| 50 | 1.4650e+6 |
| 100 | 2.9300e+6 |
| 200 | 5.8600e+6 |
| 500 | 1.465e+7 |
| 1000 | 2.93e+7 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from therm to Wh?
1 therm equals 29300.11 Wh. To convert, multiply the value in US therms by 29300.11.
How do I convert 1 therm to Wh?
1 therm = 29300.1 Wh. For any value, multiply by 29300.11.
How do I convert Wh back to therm?
Divide by the same factor — or equivalently, multiply by 3.412956e-5. So 1 Wh = 3.41296e-5 therm.
When would I need to convert US therm to watt-hour?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).