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Specific Properties

kWh/kgtoJ/kg

Convert kilowatt-hours per kilogram (kWh/kg) to joules per kilogram (J/kg).

Factor1 kWh/kg = 3600000 J/kg

Converter

kWh/kg

Accepts numbers or expressions, e.g. 150 + 14.7

Result
3.60000e+6J/kg

Rendered to 6 significant figures.

Formula

Formula
J/kg = kWh/kg × 3600000

Multiply any value in kilowatt-hours per kilogram by 3600000 to obtain the value in joules per kilogram.

Worked example

Convert 1 kWh/kg to J/kg.

  1. 01Start with 1 kWh/kg.
  2. 02Multiply by the conversion factor: 1 × 3600000 = 3.60000e+6 J/kg.
Result1 kWh/kg = 3.60000e+6 J/kg

Conversion table

kWh/kgJ/kg
13.6000e+6
27.2000e+6
51.8e+7
103.6e+7
207.2e+7
501.8e+8
1003.6e+8
2007.2e+8
5001.8e+9
10003.6e+9

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kWh/kg to J/kg?
1 kWh/kg equals 3600000 J/kg. To convert, multiply the value in kilowatt-hours per kilogram by 3600000.
How do I convert 1 kWh/kg to J/kg?
1 kWh/kg = 3.60000e+6 J/kg. For any value, multiply by 3600000.
How do I convert J/kg back to kWh/kg?
Divide by the same factor — or equivalently, multiply by 2.777778e-7. So 1 J/kg = 2.77778e-7 kWh/kg.
When would I need to convert kilowatt-hour per kilogram to joule per kilogram?
Specific-energy conversions between kWh/kg and J/kg are needed in fuel-property datasheets (HHV/LHV), thermodynamic state calculations, battery energy-density comparisons, and combustion analysis. kJ/kg is the SI standard; BTU/lb is common in US fuel specifications.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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