Fuel Efficiency - Mass Converter

Try this free online Fuel Efficiency - Mass Converter tool that can help you easily change between 14+ different ways of measuring how efficient fuel is and how heavy something is. These measurements include units like joule/kilogram [J/kg], kilojoule/kilogram [kJ/kg], calorie (IT)/gram [cal/g], calorie (th)/gram [cal (th)/g], Btu (IT)/pound [Btu/lb], Btu (th)/pound [Btu (th)/lb], kilogram/joule [kg/J], kilogram/kilojoule [kg/kJ], gram/calorie (IT) [g/cal], and more.