The International Table (IT) calorie equals exactly 4.1868 joules. This differs from the thermochemical calorie (4.184 J). We use the IT definition consistently here, matching the IT BTU and IT therm.
Definition
- Dimension
- Energy
- Symbols
- cal
- System
- convention
- Base factor
- ×4.1868
- Exactness
- standard definition
Fixed by a published standard or convention (toe, therm, IT cal/BTU).
Also known as
small caloriegram caloriecaloriescal_itinternational table calorie
Sources
Common conversions
for 1 cal| joule | 4.1868 | J | standard definition |
| kilojoule | 0.0041868 | kJ | standard definition |
| megajoule | 0.0000041868 | MJ | standard definition |
| gigajoule | 0.0000000041868 | GJ | standard definition |
| kilowatt hour | 0.000001163 | kWh | standard definition |
| megawatt hour | 0.000000001163 | MWh | standard definition |
| British thermal unit | ~0.00396832 | BTU | standard definition |
| million British thermal units | ~0.00000000396832 | MMBTU | standard definition |
| therm (US) | ~0.0000000396832 | therm | standard definition |
| tonne of oil equivalent | 0.0000000001 | toe | standard definition |