1640 newton meters equals 0.39 calories.
Convert 1640 newton meters into joules, kilojoules, megajoules, foot pounds, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...
Convert 1 calories into joules, kilojoules, megajoules, foot pounds, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...