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Specific Properties

GJ/kgtokJ/kg

Convert gigajoules per kilogram (GJ/kg) to kilojoules per kilogram (kJ/kg).

Factor1 GJ/kg = 1000000 kJ/kg

Converter

GJ/kg

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

Result
1.00000e+6kJ/kg

Rendered to 6 significant figures.

Formula

Formula
kJ/kg = GJ/kg × 1000000

Multiply any value in gigajoules per kilogram by 1000000 to obtain the value in kilojoules per kilogram.

Worked example

Convert 1 GJ/kg to kJ/kg.

  1. 01Start with 1 GJ/kg.
  2. 02Multiply by the conversion factor: 1 × 1000000 = 1.00000e+6 kJ/kg.
Result1 GJ/kg = 1.00000e+6 kJ/kg

Conversion table

GJ/kgkJ/kg
11.0000e+6
22.0000e+6
55.0000e+6
101e+7
202e+7
505e+7
1001e+8
2002e+8
5005e+8
10001e+9

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from GJ/kg to kJ/kg?
1 GJ/kg equals 1000000 kJ/kg. To convert, multiply the value in gigajoules per kilogram by 1000000.
How do I convert 1 GJ/kg to kJ/kg?
1 GJ/kg = 1.00000e+6 kJ/kg. For any value, multiply by 1000000.
How do I convert kJ/kg back to GJ/kg?
Divide by the same factor — or equivalently, multiply by 1e-6. So 1 kJ/kg = 1e-6 GJ/kg.
When would I need to convert gigajoule per kilogram to kilojoule per kilogram?
Specific-energy conversions between GJ/kg and kJ/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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