Convert Kilocalories per Kilogram to Joules per Kilogram
1 kilocalorie per kilogram (kcal/kg) = 4186.8 joules per kilogram (J/kg). 1 J/kg = 0.0002388458966 kcal/kg. Example: 15 kcal/kg = 15 × 4186.8 = 62802 J/kg.
Also searched as kilocalories per kilogram to J/kg, kilocalories per kilogram in J/kg, kilocalories per kilogram into joules per kilogram, kcal/kg to J/kg, kcal/kg in joules per kilogram, kcal/kg into joule per kilogram, kilocalorie per kilogram to joule per kilogram, kcal/kg to joules per kilogram converter and how many joules per kilogram in a kilocalorie per kilogram.
1 kcal/kg = 4186.8 J/kg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilocalorie per kilogram to joule per kilogram converter to paste a column from Excel.
How to Convert Kilocalorie per Kilogram to Joule per Kilogram
- 1 kcal/kg = 4186.8 J/kg
- 1 J/kg = 0.0002388458966 kcal/kg
- Example: convert 15 kcal/kg to J/kg: 15 kcal/kg = 15 × 4186.8 J/kg = 62802 J/kg
Reference conditions. kcal/kg: International Table calorie (4.1868 J).
Formula
J/kg = kcal/kg × 4186.8
Derivation from SI units:
- 1 kcal_IT/kg = 4186.8 J/kg.
- Energy per unit mass: J/kg (also m²/s²).
Both units are defined exactly, so the factor is exact. Kilocalorie per Kilogram definition: kilocalorie per kilogram; Joule per Kilogram definition: joule per kilogram.
Worked examples
- A reading of 100 kcal/kg converts to 418680 J/kg.
100 kcal/kg × 4186.8 = 418680 J/kg - A value of 3500 kcal/kg is 14653800 J/kg.
3500 kcal/kg × 4186.8 = 14653800 J/kg
Kilocalorie per Kilogram to Joule per Kilogram conversion table
| Kilocalories per Kilogram (kcal/kg) | Joules per Kilogram (J/kg) |
|---|---|
| 1 kcal/kg | 4186.8 J/kg |
| 10 kcal/kg | 41868 J/kg |
| 80 kcal/kg | 334944 J/kg |
| 100 kcal/kg | 418680 J/kg |
| 540 kcal/kg | 2260872 J/kg |
| 1000 kcal/kg | 4186800 J/kg |
| 3500 kcal/kg | 14653800 J/kg |
| 4500 kcal/kg | 18840600 J/kg |
| 6000 kcal/kg | 25120800 J/kg |
| 10500 kcal/kg | 43961400 J/kg |
Where it's used
Kilocalories per Kilogram are used for indian coal grading (GCV in kcal/kg), while joules per kilogram appear in specific enthalpy h and internal energy u. Both measure specific energy: enthalpy, latent heat and heating value per mass, so the conversion is a fixed factor.
Kilocalorie per Kilogram to other specific energy units
| Conversion | 1 kcal/kg equals |
|---|---|
| kilocalorie per kilogram to joule per kilogram | 4186.8 J/kg |
| kilocalorie per kilogram to kilojoule per kilogram | 4.1868 kJ/kg |
| kilocalorie per kilogram to megajoule per kilogram | 0.0041868 MJ/kg |
| kilocalorie per kilogram to BTU per pound | 1.8 BTU/lb |
| kilocalorie per kilogram to calorie per gram | 1 cal/g |
| kilocalorie per kilogram to kilowatt-hour per kilogram | 0.001163 kWh/kg |
| kilocalorie per kilogram to joule per gram | 4.1868 J/g |
Frequently asked questions
How many joules per kilogram are in 1 kilocalorie per kilogram?
1 kcal/kg = 4186.8 J/kg.
How do I convert kilocalories per kilogram to joules per kilogram?
Multiply the value in kcal/kg by 4186.8. For example, 15 kcal/kg × 4186.8 = 62802 J/kg.
Is the kcal/kg to J/kg conversion exact?
Yes. Both units are defined exactly, and 1 kcal/kg is exactly 4186.8 J/kg.
Sources
- 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".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units with special names).
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 Kilocalories per Kilogram to Joules per Kilogram. Retrieved October 29, 2026, from https://scientificconverters.com/specific-energy/kilocalories-per-kilogram-to-joules-per-kilogram/
IEEE
Scientific Converters, "Convert Kilocalories per Kilogram to Joules per Kilogram," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-energy/kilocalories-per-kilogram-to-joules-per-kilogram/