Convert Megajoules per Kilogram to Calories per Gram
1 megajoule per kilogram (MJ/kg) = 238.8458966 calories per gram (cal/g). 1 cal/g = 0.0041868 MJ/kg. Example: 15 MJ/kg = 15 × 238.8458966 = 3582.688449 cal/g.
Also searched as megajoules per kilogram to cal/g, megajoules per kilogram in cal/g, megajoules per kilogram into calories per gram, MJ/kg to cal/g, MJ/kg in calories per gram, MJ/kg into calorie per gram, megajoule per kilogram to calorie per gram, MJ/kg to calories per gram converter and how many calories per gram in a megajoule per kilogram.
1 MJ/kg = 238.8458966 cal/g
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk megajoule per kilogram to calorie per gram converter to paste a column from Excel.
How to Convert Megajoule per Kilogram to Calorie per Gram
- 1 MJ/kg = 238.8458966 cal/g
- 1 cal/g = 0.0041868 MJ/kg
- Example: convert 15 MJ/kg to cal/g: 15 MJ/kg = 15 × 238.8458966 cal/g = 3582.688449 cal/g
Reference conditions. cal/g: International Table calorie (4.1868 J).
Formula
cal/g = MJ/kg × 238.8458966275
Derivation from SI units:
- 1 MJ/kg = 10⁶ J/kg.
- 1 cal_IT/g = 4186.8 J/kg = 1 kcal/kg.
- 1 MJ/kg = 1000000 J/kg ÷ 4186.8 J/kg per cal/g = 238.8458966275 cal/g
Both units are defined exactly, so the factor is exact. Megajoule per Kilogram definition: megajoule per kilogram; Calorie per Gram definition: calorie per gram.
Worked examples
- A reading of 25 MJ/kg converts to 5971.147416 cal/g.
25 MJ/kg × 238.8458966 = 5971.147416 cal/g - A value of 44 MJ/kg is 10509.21945 cal/g.
44 MJ/kg × 238.8458966 = 10509.21945 cal/g
Megajoule per Kilogram to Calorie per Gram conversion table
| Megajoules per Kilogram (MJ/kg) | Calories per Gram (cal/g) |
|---|---|
| 10 MJ/kg | 2388.458966 cal/g |
| 15 MJ/kg | 3582.688449 cal/g |
| 17 MJ/kg | 4060.380243 cal/g |
| 25 MJ/kg | 5971.147416 cal/g |
| 30 MJ/kg | 7165.376899 cal/g |
| 42 MJ/kg | 10031.52766 cal/g |
| 44 MJ/kg | 10509.21945 cal/g |
| 46 MJ/kg | 10986.91124 cal/g |
| 50 MJ/kg | 11942.29483 cal/g |
| 120 MJ/kg | 28661.5076 cal/g |
Where it's used
Megajoules per Kilogram are used for fuel calorific values (GCV, NCV), while calories per gram appear in latent heat problems in CGS units. Both measure specific energy: enthalpy, latent heat and heating value per mass, so the conversion is a fixed factor.
Megajoule per Kilogram to other specific energy units
| Conversion | 1 MJ/kg equals |
|---|---|
| megajoule per kilogram to calorie per gram | 238.8458966 cal/g |
| megajoule per kilogram to kilojoule per kilogram | 1000 kJ/kg |
| megajoule per kilogram to BTU per pound | 429.9226139 BTU/lb |
| megajoule per kilogram to kilocalorie per kilogram | 238.8458966 kcal/kg |
| megajoule per kilogram to joule per kilogram | 1000000 J/kg |
| megajoule per kilogram to kilowatt-hour per kilogram | 0.2777777778 kWh/kg |
| megajoule per kilogram to joule per gram | 1000 J/g |
Frequently asked questions
How many calories per gram are in 1 megajoule per kilogram?
1 MJ/kg = 238.8458966 cal/g.
How do I convert megajoules per kilogram to calories per gram?
Multiply the value in MJ/kg by 238.8458966. For example, 15 MJ/kg × 238.8458966 = 3582.688449 cal/g.
Is the MJ/kg to cal/g conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units with special names).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "calorie_IT per gram".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Megajoules per Kilogram to Calories per Gram. Retrieved October 29, 2026, from https://scientificconverters.com/specific-energy/megajoules-per-kilogram-to-calories-per-gram/
IEEE
Scientific Converters, "Convert Megajoules per Kilogram to Calories per Gram," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-energy/megajoules-per-kilogram-to-calories-per-gram/