Convert Calories per Gram to Kilowatt-hours per Kilogram
1 calorie per gram (cal/g) = 0.001163 kilowatt-hours per kilogram (kWh/kg). 1 kWh/kg = 859.8452279 cal/g. Example: 15 cal/g = 15 × 0.001163 = 0.017445 kWh/kg.
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1 cal/g = 0.001163 kWh/kg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk calorie per gram to kilowatt-hour per kilogram converter to paste a column from Excel.
How to Convert Calorie per Gram to Kilowatt-hour per Kilogram
- 1 cal/g = 0.001163 kWh/kg
- 1 kWh/kg = 859.8452279 cal/g
- Example: convert 15 cal/g to kWh/kg: 15 cal/g = 15 × 0.001163 kWh/kg = 0.017445 kWh/kg
Reference conditions. cal/g: International Table calorie (4.1868 J).
Formula
kWh/kg = cal/g × 0.001163
or kWh/kg = cal/g ÷ 859.845227859
Derivation from SI units:
- 1 cal_IT/g = 4186.8 J/kg = 1 kcal/kg.
- 1 kWh/kg = 3.6 × 10⁶ J/kg.
- 1 cal/g = 4186.8 J/kg ÷ 3600000 J/kg per kWh/kg = 0.001163 kWh/kg
Both units are defined exactly, so the factor is exact. Calorie per Gram definition: calorie per gram; Kilowatt-hour per Kilogram definition: kilowatt-hour per kilogram.
Worked examples
- A reading of 80 cal/g converts to 0.09304 kWh/kg.
80 cal/g × 0.001163 = 0.09304 kWh/kg - A value of 1000 cal/g is 1.163 kWh/kg.
1000 cal/g × 0.001163 = 1.163 kWh/kg
Calorie per Gram to Kilowatt-hour per Kilogram conversion table
| Calories per Gram (cal/g) | Kilowatt-hours per Kilogram (kWh/kg) |
|---|---|
| 1 cal/g | 0.001163 kWh/kg |
| 10 cal/g | 0.01163 kWh/kg |
| 50 cal/g | 0.05815 kWh/kg |
| 80 cal/g | 0.09304 kWh/kg |
| 100 cal/g | 0.1163 kWh/kg |
| 540 cal/g | 0.62802 kWh/kg |
| 1000 cal/g | 1.163 kWh/kg |
| 4000 cal/g | 4.652 kWh/kg |
| 9000 cal/g | 10.467 kWh/kg |
| 11000 cal/g | 12.793 kWh/kg |
Where it's used
Calories per Gram are used for latent heat problems in CGS units, while kilowatt-hours per kilogram appear in battery gravimetric energy density. 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 kilowatt-hour per kilogram | 0.001163 kWh/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 kilocalorie per kilogram | 1 kcal/kg |
| calorie per gram to joule per kilogram | 4186.8 J/kg |
| calorie per gram to joule per gram | 4.1868 J/g |
Frequently asked questions
How many kilowatt-hours per kilogram are in 1 calorie per gram?
1 cal/g = 0.001163 kWh/kg.
How do I convert calories per gram to kilowatt-hours per kilogram?
Multiply the value in cal/g by 0.001163, or divide it by 859.8452279. For example, 15 cal/g × 0.001163 = 0.017445 kWh/kg.
Is the cal/g to kWh/kg conversion exact?
Yes. Both units are defined exactly, and 1 cal/g is exactly 0.001163 kWh/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 Calories per Gram to Kilowatt-hours per Kilogram. Retrieved October 29, 2026, from https://scientificconverters.com/specific-energy/calories-per-gram-to-kilowatt-hours-per-kilogram/
IEEE
Scientific Converters, "Convert Calories per Gram to Kilowatt-hours per Kilogram," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-energy/calories-per-gram-to-kilowatt-hours-per-kilogram/