3900 foot pounds equals 1.26 calories.
Convert 3900 foot pounds into joules, kilojoules, megajoules, newton meters, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...
Convert 2 calories into joules, kilojoules, megajoules, newton meters, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...