Power and Energy
MJtocal
Convert megajoules (MJ) to thermochemical calories (cal).
Factor1 MJ = 239005.7 cal
Converter
MJ
Accepts numbers or expressions, e.g. 150 + 14.7
Result
cal
Rendered to 6 significant figures.
Formula
Formula
cal = MJ × 239005.7
Multiply any value in megajoules by 239005.7 to obtain the value in thermochemical calories.
Worked example
Convert 1 MJ to cal.
- 01Start with 1 MJ.
- 02Multiply by the conversion factor: 1 × 239005.7 = 239006 cal.
Result1 MJ = 239006 cal
Conversion table
| MJ | cal |
|---|---|
| 1 | 2.3901e+5 |
| 2 | 4.7801e+5 |
| 5 | 1.1950e+6 |
| 10 | 2.3901e+6 |
| 20 | 4.7801e+6 |
| 50 | 1.195e+7 |
| 100 | 2.3901e+7 |
| 200 | 4.7801e+7 |
| 500 | 1.195e+8 |
| 1000 | 2.3901e+8 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from MJ to cal?
1 MJ equals 239005.7 cal. To convert, multiply the value in megajoules by 239005.7.
How do I convert 1 MJ to cal?
1 MJ = 239006 cal. For any value, multiply by 239005.7.
How do I convert cal back to MJ?
Divide by the same factor — or equivalently, multiply by 4.184e-6. So 1 cal = 4.184e-6 MJ.
When would I need to convert megajoule to thermochemical calorie?
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?
Yes. Both MJ and cal are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).