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Specific Properties

GJ/kgtokcal/kg

Convert gigajoules per kilogram (GJ/kg) to kilocalories per kilogram (kcal/kg).

Factor1 GJ/kg = 239005.7 kcal/kg

Converter

GJ/kg

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

Result
239006kcal/kg

Rendered to 6 significant figures.

Formula

Formula
kcal/kg = GJ/kg × 239005.7

Multiply any value in gigajoules per kilogram by 239005.7 to obtain the value in kilocalories per kilogram.

Worked example

Convert 1 GJ/kg to kcal/kg.

  1. 01Start with 1 GJ/kg.
  2. 02Multiply by the conversion factor: 1 × 239005.7 = 239006 kcal/kg.
Result1 GJ/kg = 239006 kcal/kg

Conversion table

GJ/kgkcal/kg
12.3901e+5
24.7801e+5
51.1950e+6
102.3901e+6
204.7801e+6
501.195e+7
1002.3901e+7
2004.7801e+7
5001.195e+8
10002.3901e+8

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from GJ/kg to kcal/kg?
1 GJ/kg equals 239005.7 kcal/kg. To convert, multiply the value in gigajoules per kilogram by 239005.7.
How do I convert 1 GJ/kg to kcal/kg?
1 GJ/kg = 239006 kcal/kg. For any value, multiply by 239005.7.
How do I convert kcal/kg back to GJ/kg?
Divide by the same factor — or equivalently, multiply by 4.184e-6. So 1 kcal/kg = 4.184e-6 GJ/kg.
When would I need to convert gigajoule per kilogram to kilocalorie per kilogram?
Specific-energy conversions between GJ/kg and kcal/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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