Convert Calories per Gram to Kilocalories per Kilogram
1 calorie per gram (cal/g) = 1 kilocalorie per kilogram (kcal/kg). 1 kcal/kg = 1 cal/g. Example: 15 cal/g = 15 × 1 = 15 kcal/kg.
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1 cal/g = 1 kcal/kg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk calorie per gram to kilocalorie per kilogram converter to paste a column from Excel.
How to Convert Calorie per Gram to Kilocalorie per Kilogram
- 1 cal/g = 1 kcal/kg
- 1 kcal/kg = 1 cal/g
- Example: convert 15 cal/g to kcal/kg: 15 cal/g = 15 × 1 kcal/kg = 15 kcal/kg
Reference conditions. cal/g: International Table calorie (4.1868 J). kcal/kg: International Table calorie (4.1868 J).
Formula
kcal/kg = cal/g × 1
Derivation from SI units:
- 1 cal_IT/g = 4186.8 J/kg = 1 kcal/kg.
- 1 kcal_IT/kg = 4186.8 J/kg.
- 1 cal/g = 4186.8 J/kg ÷ 4186.8 J/kg per kcal/kg = 1 kcal/kg
Both units are defined exactly, so the factor is exact. Calorie per Gram definition: calorie per gram; Kilocalorie per Kilogram definition: kilocalorie per kilogram.
Worked examples
- A reading of 80 cal/g converts to 80 kcal/kg.
80 cal/g × 1 = 80 kcal/kg - A value of 1000 cal/g is 1000 kcal/kg.
1000 cal/g × 1 = 1000 kcal/kg
Calorie per Gram to Kilocalorie per Kilogram conversion table
| Calories per Gram (cal/g) | Kilocalories per Kilogram (kcal/kg) |
|---|---|
| 1 cal/g | 1 kcal/kg |
| 10 cal/g | 10 kcal/kg |
| 50 cal/g | 50 kcal/kg |
| 80 cal/g | 80 kcal/kg |
| 100 cal/g | 100 kcal/kg |
| 540 cal/g | 540 kcal/kg |
| 1000 cal/g | 1000 kcal/kg |
| 4000 cal/g | 4000 kcal/kg |
| 9000 cal/g | 9000 kcal/kg |
| 11000 cal/g | 11000 kcal/kg |
Where it's used
Calories per Gram are used for latent heat problems in CGS units, 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.
Calorie per Gram to other specific energy units
| Conversion | 1 cal/g equals |
|---|---|
| calorie per gram to kilocalorie per kilogram | 1 kcal/kg |
| calorie per gram to kilojoule per kilogram | 4.1868 kJ/kg |
| calorie per gram to megajoule per kilogram | 0.0041868 MJ/kg |
| calorie per gram to BTU per pound | 1.8 BTU/lb |
| calorie per gram to joule per kilogram | 4186.8 J/kg |
| calorie per gram to kilowatt-hour per kilogram | 0.001163 kWh/kg |
| calorie per gram to joule per gram | 4.1868 J/g |
Frequently asked questions
How many kilocalories per kilogram are in 1 calorie per gram?
1 cal/g = 1 kcal/kg.
How do I convert calories per gram to kilocalories per kilogram?
Multiply the value in cal/g by 1. For example, 15 cal/g × 1 = 15 kcal/kg.
Is the cal/g to kcal/kg conversion exact?
Yes. Both units are defined exactly, and 1 cal/g is exactly 1 kcal/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".
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 Calories per Gram to Kilocalories per Kilogram. Retrieved October 29, 2026, from https://scientificconverters.com/specific-energy/calories-per-gram-to-kilocalories-per-kilogram/
IEEE
Scientific Converters, "Convert Calories per Gram to Kilocalories per Kilogram," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-energy/calories-per-gram-to-kilocalories-per-kilogram/