Convert Kilowatt-hours per Kilogram to MJ/kg
1 kilowatt-hour per kilogram (kWh/kg) = 3.6 megajoules per kilogram (MJ/kg). 1 MJ/kg = 0.2777777778 kWh/kg. Example: 15 kWh/kg = 15 × 3.6 = 54 MJ/kg.
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1 kWh/kg = 3.6 MJ/kg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilowatt-hour per kilogram to megajoule per kilogram converter to paste a column from Excel.
How to Convert Kilowatt-hour per Kilogram to Megajoule per Kilogram
- 1 kWh/kg = 3.6 MJ/kg
- 1 MJ/kg = 0.2777777778 kWh/kg
- Example: convert 15 kWh/kg to MJ/kg: 15 kWh/kg = 15 × 3.6 MJ/kg = 54 MJ/kg
Formula
MJ/kg = kWh/kg × 3.6
Derivation from SI units:
- 1 kWh/kg = 3.6 × 10⁶ J/kg.
- 1 MJ/kg = 10⁶ J/kg.
- 1 kWh/kg = 3600000 J/kg ÷ 1000000 J/kg per MJ/kg = 3.6 MJ/kg
Both units are defined exactly, so the factor is exact. Kilowatt-hour per Kilogram definition: kilowatt-hour per kilogram; Megajoule per Kilogram definition: megajoule per kilogram.
Worked examples
- A reading of 1 kWh/kg converts to 3.6 MJ/kg.
1 kWh/kg × 3.6 = 3.6 MJ/kg - A value of 12 kWh/kg is 43.2 MJ/kg.
12 kWh/kg × 3.6 = 43.2 MJ/kg
Kilowatt-hour per Kilogram to Megajoule per Kilogram conversion table
| Kilowatt-hours per Kilogram (kWh/kg) | Megajoules per Kilogram (MJ/kg) |
|---|---|
| 0.1 kWh/kg | 0.36 MJ/kg |
| 0.15 kWh/kg | 0.54 MJ/kg |
| 0.25 kWh/kg | 0.9 MJ/kg |
| 1 kWh/kg | 3.6 MJ/kg |
| 5 kWh/kg | 18 MJ/kg |
| 8 kWh/kg | 28.8 MJ/kg |
| 12 kWh/kg | 43.2 MJ/kg |
| 12.7 kWh/kg | 45.72 MJ/kg |
| 33.3 kWh/kg | 119.88 MJ/kg |
| 39.4 kWh/kg | 141.84 MJ/kg |
Where it's used
Kilowatt-hours per Kilogram are used for battery gravimetric energy density, while megajoules per kilogram appear in fuel calorific values (GCV, NCV). Both measure specific energy: enthalpy, latent heat and heating value per mass, so the conversion is a fixed factor.
Kilowatt-hour per Kilogram to other specific energy units
| Conversion | 1 kWh/kg equals |
|---|---|
| kilowatt-hour per kilogram to megajoule per kilogram | 3.6 MJ/kg |
| kilowatt-hour per kilogram to kilojoule per kilogram | 3600 kJ/kg |
| kilowatt-hour per kilogram to BTU per pound | 1547.72141 BTU/lb |
| kilowatt-hour per kilogram to kilocalorie per kilogram | 859.8452279 kcal/kg |
| kilowatt-hour per kilogram to joule per kilogram | 3600000 J/kg |
| kilowatt-hour per kilogram to calorie per gram | 859.8452279 cal/g |
| kilowatt-hour per kilogram to joule per gram | 3600 J/g |
Frequently asked questions
How many megajoules per kilogram are in 1 kilowatt-hour per kilogram?
1 kWh/kg = 3.6 MJ/kg.
How do I convert kilowatt-hours per kilogram to megajoules per kilogram?
Multiply the value in kWh/kg by 3.6. For example, 15 kWh/kg × 3.6 = 54 MJ/kg.
Is the kWh/kg to MJ/kg conversion exact?
Yes. Both units are defined exactly, and 1 kWh/kg is exactly 3.6 MJ/kg.
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 Kilowatt-hours per Kilogram to MJ/kg. Retrieved October 29, 2026, from https://scientificconverters.com/specific-energy/kilowatt-hours-per-kilogram-to-megajoules-per-kilogram/
IEEE
Scientific Converters, "Convert Kilowatt-hours per Kilogram to MJ/kg," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-energy/kilowatt-hours-per-kilogram-to-megajoules-per-kilogram/