Energy & work
Mechanical, electrical, thermal and particle energy.
Try a decimal, 1e-9, 1/3, or 5 1/2.
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Convert U.S. therm (therm US) to International Table British thermal unit (BtuIT). Enter a value for an instant result, or use the examples and reverse conversion below.
Mechanical, electrical, thermal and particle energy.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Enter a U.S. therm value to calculate International Table British thermal unit with full internal precision before display rounding.
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
| Unit | Symbol | Converted value |
|---|---|---|
| ergfrom therm US | erg | 1.0548e15 |
| microjoulefrom therm US | µJ | 105480000000000 |
| millijoulefrom therm US | mJ | 105480000000 |
| joulefrom therm US | J | 105480000 |
| kilojoulefrom therm US | kJ | 105480 |
| megajoulefrom therm US | MJ | 105.48 |
| gigajoulefrom therm US | GJ | 0.10548 |
| watt-hourfrom therm US | Wh | 29300.1 |
| kilowatt-hourfrom therm US | kWh | 29.3001 |
| megawatt-hourfrom therm US | MWh | 0.0293001 |
| thermochemical caloriefrom therm US | calₜₕ | 25210400 |
| thermochemical kilocaloriefrom therm US | kcalₜₕ | 25210.4 |
| International Table caloriefrom therm US | calIT | 25193600 |
| International Table British thermal unitfrom therm US | BtuIT | 99976.1 |
| U.S. thermfrom therm US | therm US | 1 |
| foot pound-forcefrom therm US | ft·lbf | 77798400 |
| electronvoltfrom therm US | eV | 6.58357e26 |
| kiloelectronvoltfrom therm US | keV | 6.58357e23 |
| megaelectronvoltfrom therm US | MeV | 6.58357e20 |
| gigaelectronvoltfrom therm US | GeV | 6.58357e17 |
| ton of TNTfrom therm US | t TNT | 0.0252104 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
U.S. Therm (therm US) and International Table British thermal unit (BtuIT) are units of energy & work. Use this page to convert in either direction.
| U.S. Therm (therm US) | International Table British Thermal Unit (BtuIT) |
|---|---|
| 1 therm US | 99976.1 BtuIT |
| 5 therm US | 499881 BtuIT |
| 10 therm US | 999761 BtuIT |
| 100 therm US | 9997610 BtuIT |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
BtuIT to therm US (International Table British thermal unit to U.S. therm)