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Specific Properties

J/kgtoMJ/kg

Convert joules per kilogram (J/kg) to megajoules per kilogram (MJ/kg).

Factor1 J/kg = 1e-6 MJ/kg

Converter

J/kg

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

Result
1MJ/kg

Rendered to 6 significant figures.

Formula

Formula
MJ/kg = J/kg × 1e-6

Multiply any value in joules per kilogram by 1e-6 to obtain the value in megajoules per kilogram.

Worked example

Convert 1.00000e+6 J/kg to MJ/kg.

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

Conversion table

J/kgMJ/kg
11e-6
22e-6
55e-6
101e-5
202e-5
505e-5
1000.0001
2000.0002
5000.0005
10000.001

Reference values rounded to 5 significant figures for display.

FAQ

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