Convert Joules per Gram to Kilocalories per Kilogram
1 joule per gram (J/g) = 0.2388458966 kilocalories per kilogram (kcal/kg). 1 kcal/kg = 4.1868 J/g. Example: 15 J/g = 15 × 0.2388458966 = 3.582688449 kcal/kg.
Also searched as joules per gram to kcal/kg, joules per gram in kcal/kg, joules per gram into kilocalories per kilogram, J/g to kcal/kg, J/g in kilocalories per kilogram, J/g into kilocalorie per kilogram, joule per gram to kilocalorie per kilogram, J/g to kilocalories per kilogram converter and how many kilocalories per kilogram in a joule per gram.
1 J/g = 0.2388458966 kcal/kg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk joule per gram to kilocalorie per kilogram converter to paste a column from Excel.
How to Convert Joule per Gram to Kilocalorie per Kilogram
- 1 J/g = 0.2388458966 kcal/kg
- 1 kcal/kg = 4.1868 J/g
- Example: convert 15 J/g to kcal/kg: 15 J/g = 15 × 0.2388458966 kcal/kg = 3.582688449 kcal/kg
Reference conditions. kcal/kg: International Table calorie (4.1868 J).
Formula
kcal/kg = J/g × 0.2388458966275
or kcal/kg = J/g ÷ 4.1868
Derivation from SI units:
- 1 J/g = 1 kJ/kg.
- 1 kcal_IT/kg = 4186.8 J/kg.
- 1 J/g = 1000 J/kg ÷ 4186.8 J/kg per kcal/kg = 0.2388458966275 kcal/kg
Both units are defined exactly, so the factor is exact. Joule per Gram definition: joule per gram; Kilocalorie per Kilogram definition: kilocalorie per kilogram.
Worked examples
- A reading of 100 J/g converts to 23.88458966 kcal/kg.
100 J/g × 0.2388458966 = 23.88458966 kcal/kg - A value of 1000 J/g is 238.8458966 kcal/kg.
1000 J/g × 0.2388458966 = 238.8458966 kcal/kg
Joule per Gram to Kilocalorie per Kilogram conversion table
| Joules per Gram (J/g) | Kilocalories per Kilogram (kcal/kg) |
|---|---|
| 1 J/g | 0.2388458966 kcal/kg |
| 10 J/g | 2.388458966 kcal/kg |
| 50 J/g | 11.94229483 kcal/kg |
| 100 J/g | 23.88458966 kcal/kg |
| 200 J/g | 47.76917933 kcal/kg |
| 334 J/g | 79.77452947 kcal/kg |
| 1000 J/g | 238.8458966 kcal/kg |
| 2257 J/g | 539.0751887 kcal/kg |
| 17000 J/g | 4060.380243 kcal/kg |
| 37000 J/g | 8837.298175 kcal/kg |
Where it's used
Joules per Gram are used for DSC melting and crystallisation enthalpy, while kilocalories per kilogram appear in indian coal grading (GCV in kcal/kg). Both measure specific energy: enthalpy, latent heat and heating value per mass, so the conversion is a fixed factor.
Joule per Gram to other specific energy units
| Conversion | 1 J/g equals |
|---|---|
| joule per gram to kilocalorie per kilogram | 0.2388458966 kcal/kg |
| joule per gram to kilojoule per kilogram | 1 kJ/kg |
| joule per gram to megajoule per kilogram | 0.001 MJ/kg |
| joule per gram to BTU per pound | 0.4299226139 BTU/lb |
| joule per gram to joule per kilogram | 1000 J/kg |
| joule per gram to calorie per gram | 0.2388458966 cal/g |
| joule per gram to kilowatt-hour per kilogram | 0.0002777777778 kWh/kg |
Frequently asked questions
How many kilocalories per kilogram are in 1 joule per gram?
1 J/g = 0.2388458966 kcal/kg.
How do I convert joules per gram to kilocalories per kilogram?
Multiply the value in J/g by 0.2388458966, or divide it by 4.1868. For example, 15 J/g × 0.2388458966 = 3.582688449 kcal/kg.
Is the J/g to kcal/kg 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 Joules per Gram to Kilocalories per Kilogram. Retrieved October 29, 2026, from https://scientificconverters.com/specific-energy/joules-per-gram-to-kilocalories-per-kilogram/
IEEE
Scientific Converters, "Convert Joules per Gram to Kilocalories per Kilogram," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-energy/joules-per-gram-to-kilocalories-per-kilogram/