Convert Joules per Kilogram to Kilowatt-hours per Kilogram
1 joule per kilogram (J/kg) = 2.777777778 × 10⁻⁷ kilowatt-hours per kilogram (kWh/kg). 1 kWh/kg = 3600000 J/kg. Example: 15 J/kg = 15 × 2.777777778 × 10⁻⁷ = 0.000004166666667 kWh/kg.
Also searched as joules per kilogram to kWh/kg, joules per kilogram in kWh/kg, joules per kilogram into kilowatt-hours per kilogram, J/kg to kWh/kg, J/kg in kilowatt-hours per kilogram, J/kg into kilowatt-hour per kilogram, joule per kilogram to kilowatt-hour per kilogram, J/kg to kilowatt-hours per kilogram converter and how many kilowatt-hours per kilogram in a joule per kilogram.
1 J/kg = 2.777777778e-7 kWh/kg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk joule per kilogram to kilowatt-hour per kilogram converter to paste a column from Excel.
How to Convert Joule per Kilogram to Kilowatt-hour per Kilogram
- 1 J/kg = 2.777777778 × 10⁻⁷ kWh/kg
- 1 kWh/kg = 3600000 J/kg
- Example: convert 15 J/kg to kWh/kg: 15 J/kg = 15 × 2.777777778 × 10⁻⁷ kWh/kg = 0.000004166666667 kWh/kg
Formula
kWh/kg = J/kg ÷ 3600000
Derivation from SI units:
- Energy per unit mass: J/kg (also m²/s²).
- 1 kWh/kg = 3.6 × 10⁶ J/kg.
Both units are defined exactly, so the factor is exact. Joule per Kilogram definition: joule per kilogram; Kilowatt-hour per Kilogram definition: kilowatt-hour per kilogram.
Worked examples
- A reading of 334000 J/kg converts to 0.09277777778 kWh/kg.
334000 J/kg × 2.777777778 × 10⁻⁷ = 0.09277777778 kWh/kg - A value of 2500000 J/kg is 0.6944444444 kWh/kg.
2500000 J/kg × 2.777777778 × 10⁻⁷ = 0.6944444444 kWh/kg
Joule per Kilogram to Kilowatt-hour per Kilogram conversion table
| Joules per Kilogram (J/kg) | Kilowatt-hours per Kilogram (kWh/kg) |
|---|---|
| 1000 J/kg | 0.0002777777778 kWh/kg |
| 10000 J/kg | 0.002777777778 kWh/kg |
| 100000 J/kg | 0.02777777778 kWh/kg |
| 334000 J/kg | 0.09277777778 kWh/kg |
| 1000000 J/kg | 0.2777777778 kWh/kg |
| 2257000 J/kg | 0.6269444444 kWh/kg |
| 2500000 J/kg | 0.6944444444 kWh/kg |
| 10000000 J/kg | 2.777777778 kWh/kg |
| 42000000 J/kg | 11.66666667 kWh/kg |
| 50000000 J/kg | 13.88888889 kWh/kg |
Where it's used
Joules per Kilogram are used for specific enthalpy h and internal energy u, 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.
Joule per Kilogram to other specific energy units
| Conversion | 1 J/kg equals |
|---|---|
| joule per kilogram to kilowatt-hour per kilogram | 2.777777778 × 10⁻⁷ kWh/kg |
| joule per kilogram to kilojoule per kilogram | 0.001 kJ/kg |
| joule per kilogram to megajoule per kilogram | 0.000001 MJ/kg |
| joule per kilogram to BTU per pound | 0.0004299226139 BTU/lb |
| joule per kilogram to kilocalorie per kilogram | 0.0002388458966 kcal/kg |
| joule per kilogram to calorie per gram | 0.0002388458966 cal/g |
| joule per kilogram to joule per gram | 0.001 J/g |
Frequently asked questions
How many kilowatt-hours per kilogram are in 1 joule per kilogram?
1 J/kg = 2.777777778 × 10⁻⁷ kWh/kg.
How do I convert joules per kilogram to kilowatt-hours per kilogram?
Multiply the value in J/kg by 2.777777778 × 10⁻⁷, or divide it by 3600000. For example, 15 J/kg × 2.777777778 × 10⁻⁷ = 0.000004166666667 kWh/kg.
Is the J/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 Joules per Kilogram to Kilowatt-hours per Kilogram. Retrieved October 29, 2026, from https://scientificconverters.com/specific-energy/joules-per-kilogram-to-kilowatt-hours-per-kilogram/
IEEE
Scientific Converters, "Convert Joules per Kilogram to Kilowatt-hours per Kilogram," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-energy/joules-per-kilogram-to-kilowatt-hours-per-kilogram/