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Specific Properties

Wh/kgtoJ/kg

Convert watt-hours per kilogram (Wh/kg) to joules per kilogram (J/kg).

Factor1 Wh/kg = 3600 J/kg

Converter

Wh/kg

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

Result
3600J/kg

Rendered to 6 significant figures.

Formula

Formula
J/kg = Wh/kg × 3600

Multiply any value in watt-hours per kilogram by 3600 to obtain the value in joules per kilogram.

Worked example

Convert 1 Wh/kg to J/kg.

  1. 01Start with 1 Wh/kg.
  2. 02Multiply by the conversion factor: 1 × 3600 = 3600 J/kg.
Result1 Wh/kg = 3600 J/kg

Conversion table

Wh/kgJ/kg
13600
27200
518000
1036000
2072000
501.8000e+5
1003.6000e+5
2007.2000e+5
5001.8000e+6
10003.6000e+6

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from Wh/kg to J/kg?
1 Wh/kg equals 3600 J/kg. To convert, multiply the value in watt-hours per kilogram by 3600.
How do I convert 1 Wh/kg to J/kg?
1 Wh/kg = 3600 J/kg. For any value, multiply by 3600.
How do I convert J/kg back to Wh/kg?
Divide by the same factor — or equivalently, multiply by 0.0002777778. So 1 J/kg = 0.000277778 Wh/kg.
When would I need to convert watt-hour per kilogram to joule per kilogram?
Specific-energy conversions between Wh/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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