Convert Kilojoules per Kilogram to kWh/kg
1 kilojoule per kilogram (kJ/kg) = 0.0002777777778 kilowatt-hours per kilogram (kWh/kg). 1 kWh/kg = 3600 kJ/kg. Example: 15 kJ/kg = 15 × 0.0002777777778 = 0.004166666667 kWh/kg.
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1 kJ/kg = 0.0002777777778 kWh/kg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilojoule per kilogram to kilowatt-hour per kilogram converter to paste a column from Excel.
How to Convert Kilojoule per Kilogram to Kilowatt-hour per Kilogram
- 1 kJ/kg = 0.0002777777778 kWh/kg
- 1 kWh/kg = 3600 kJ/kg
- Example: convert 15 kJ/kg to kWh/kg: 15 kJ/kg = 15 × 0.0002777777778 kWh/kg = 0.004166666667 kWh/kg
Formula
kWh/kg = kJ/kg ÷ 3600
Derivation from SI units:
- 1 kJ/kg = 1000 J/kg.
- 1 kWh/kg = 3.6 × 10⁶ J/kg.
- 1 kJ/kg = 1000 J/kg ÷ 3600000 J/kg per kWh/kg = 0.0002777777777778 kWh/kg
Both units are defined exactly, so the factor is exact. Kilojoule per Kilogram definition: kilojoule per kilogram; Kilowatt-hour per Kilogram definition: kilowatt-hour per kilogram.
Worked examples
- A reading of 334 kJ/kg converts to 0.09277777778 kWh/kg.
334 kJ/kg × 0.0002777777778 = 0.09277777778 kWh/kg - A value of 2257 kJ/kg is 0.6269444444 kWh/kg.
2257 kJ/kg × 0.0002777777778 = 0.6269444444 kWh/kg
Kilojoule per Kilogram to Kilowatt-hour per Kilogram conversion table
| Kilojoules per Kilogram (kJ/kg) | Kilowatt-hours per Kilogram (kWh/kg) |
|---|---|
| 1 kJ/kg | 0.0002777777778 kWh/kg |
| 10 kJ/kg | 0.002777777778 kWh/kg |
| 100 kJ/kg | 0.02777777778 kWh/kg |
| 334 kJ/kg | 0.09277777778 kWh/kg |
| 419 kJ/kg | 0.1163888889 kWh/kg |
| 1000 kJ/kg | 0.2777777778 kWh/kg |
| 2257 kJ/kg | 0.6269444444 kWh/kg |
| 2676 kJ/kg | 0.7433333333 kWh/kg |
| 3000 kJ/kg | 0.8333333333 kWh/kg |
| 3500 kJ/kg | 0.9722222222 kWh/kg |
Where it's used
Kilojoules per Kilogram are used for steam tables (h, u, latent heat), 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.
Kilojoule per Kilogram to other specific energy units
| Conversion | 1 kJ/kg equals |
|---|---|
| kilojoule per kilogram to kilowatt-hour per kilogram | 0.0002777777778 kWh/kg |
| kilojoule per kilogram to megajoule per kilogram | 0.001 MJ/kg |
| kilojoule per kilogram to BTU per pound | 0.4299226139 BTU/lb |
| kilojoule per kilogram to kilocalorie per kilogram | 0.2388458966 kcal/kg |
| kilojoule per kilogram to joule per kilogram | 1000 J/kg |
| kilojoule per kilogram to calorie per gram | 0.2388458966 cal/g |
| kilojoule per kilogram to joule per gram | 1 J/g |
Frequently asked questions
How many kilowatt-hours per kilogram are in 1 kilojoule per kilogram?
1 kJ/kg = 0.0002777777778 kWh/kg.
How do I convert kilojoules per kilogram to kilowatt-hours per kilogram?
Multiply the value in kJ/kg by 0.0002777777778, or divide it by 3600. For example, 15 kJ/kg × 0.0002777777778 = 0.004166666667 kWh/kg.
Is the kJ/kg to kWh/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).
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 Kilojoules per Kilogram to kWh/kg. Retrieved October 29, 2026, from https://scientificconverters.com/specific-energy/kilojoules-per-kilogram-to-kilowatt-hours-per-kilogram/
IEEE
Scientific Converters, "Convert Kilojoules per Kilogram to kWh/kg," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-energy/kilojoules-per-kilogram-to-kilowatt-hours-per-kilogram/