▸ processconvert
Specific Properties

Wh/kgtoGJ/kg

Convert watt-hours per kilogram (Wh/kg) to gigajoules per kilogram (GJ/kg).

Factor1 Wh/kg = 3.6e-6 GJ/kg

Converter

Wh/kg

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

Result
3.6GJ/kg

Rendered to 6 significant figures.

Formula

Formula
GJ/kg = Wh/kg × 3.6e-6

Multiply any value in watt-hours per kilogram by 3.6e-6 to obtain the value in gigajoules per kilogram.

Worked example

Convert 1.00000e+6 Wh/kg to GJ/kg.

  1. 01Start with 1.00000e+6 Wh/kg.
  2. 02Multiply by the conversion factor: 1.00000e+6 × 3.6e-6 = 3.6 GJ/kg.
Result1.00000e+6 Wh/kg = 3.6 GJ/kg

Conversion table

Wh/kgGJ/kg
13.6e-6
27.2e-6
51.8e-5
103.6e-5
207.2e-5
500.00018
1000.00036
2000.00072
5000.0018
10000.0036

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from Wh/kg to GJ/kg?
1 Wh/kg equals 3.6e-6 GJ/kg. To convert, multiply the value in watt-hours per kilogram by 3.6e-6.
How do I convert 1 Wh/kg to GJ/kg?
1 Wh/kg = 3.6e-6 GJ/kg. For any value, multiply by 3.6e-6.
How do I convert GJ/kg back to Wh/kg?
Divide by the same factor — or equivalently, multiply by 277777.8. So 1 GJ/kg = 277778 Wh/kg.
When would I need to convert watt-hour per kilogram to gigajoule per kilogram?
Specific-energy conversions between Wh/kg and GJ/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).

Related conversions