Fuel Efficiency — Mass Converter
Convert energy-per-mass: J/kg, BTU/lb, kJ/kg.
6 decimals
1 J/kg = 0.00043 BTU/lb
About the fuel efficiency — mass converter
Convert energy per unit mass between J/kg, kJ/kg, BTU/lb, cal/g, and kcal/kg. This quantity describes the energy content of fuels and the specific energy of explosives, foods, and chemical reactions.
Frequently asked questions
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How many J/kg is 1 BTU/lb?
One BTU per pound equals exactly 2,326 J/kg.
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How many kJ/kg is 1 cal/g?
One thermochemical calorie per gram equals exactly 4.184 kJ/kg.
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What is the SI unit of specific energy?
The joule per kilogram (J/kg).
Complete list of fuel efficiency — mass units
- Joule/kilogram [J/kg]