Energy & work
Mechanical, electrical, thermal and particle energy.
Try a decimal, 1e-9, 1/3, or 5 1/2.
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Convert International Table calorie (calIT) 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 International Table calorie 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 calIT | erg | 41868000 |
| microjoulefrom calIT | µJ | 4186800 |
| millijoulefrom calIT | mJ | 4186.8 |
| joulefrom calIT | J | 4.1868 |
| kilojoulefrom calIT | kJ | 0.0041868 |
| megajoulefrom calIT | MJ | 0.0000041868 |
| gigajoulefrom calIT | GJ | 0.0000000041868 |
| watt-hourfrom calIT | Wh | 0.001163 |
| kilowatt-hourfrom calIT | kWh | 0.000001163 |
| megawatt-hourfrom calIT | MWh | 0.000000001163 |
| thermochemical caloriefrom calIT | calₜₕ | 1.00067 |
| thermochemical kilocaloriefrom calIT | kcalₜₕ | 0.00100067 |
| International Table caloriefrom calIT | calIT | 1 |
| International Table British thermal unitfrom calIT | BtuIT | 0.00396832 |
| U.S. thermfrom calIT | therm US | 0.0000000396927 |
| foot pound-forcefrom calIT | ft·lbf | 3.08803 |
| electronvoltfrom calIT | eV | 2.6132e19 |
| kiloelectronvoltfrom calIT | keV | 2.6132e16 |
| megaelectronvoltfrom calIT | MeV | 26132000000000 |
| gigaelectronvoltfrom calIT | GeV | 26132000000 |
| ton of TNTfrom calIT | t TNT | 0.00000000100067 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
International Table Calorie (calIT) and International Table British thermal unit (BtuIT) are units of energy & work. Use this page to convert in either direction.
| International Table Calorie (calIT) | International Table British Thermal Unit (BtuIT) |
|---|---|
| 1 calIT | 0.00396832 BtuIT |
| 5 calIT | 0.0198416 BtuIT |
| 10 calIT | 0.0396832 BtuIT |
| 100 calIT | 0.396832 BtuIT |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
BtuIT to calIT (International Table British thermal unit to International Table calorie)