Mass-Based Fuel Efficiency Converter

Recent Conversions

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Common Conversions

Quick reference for frequently used conversions

J/kgkJ/kg

1 kJ/kg = 1,000 J/kg

kJ/kgMJ/kg

1 MJ/kg = 1,000 kJ/kg

J/kgcal/g

1 cal/g ≈ 4,186.8 J/kg

kcal/kgkJ/kg

1 kcal/kg ≈ 4.187 kJ/kg

BTU/lbkJ/kg

1 BTU/lb ≈ 2.326 kJ/kg

MJ/kgBTU/lb

1 MJ/kg ≈ 429.9 BTU/lb

Built with precision • All fuel efficiency mass units supported