3991 calories equals 4.64 kilowatt hours.
Convert 3991 calories into joules, kilojoules, megajoules, newton meters, foot pounds, watt hours, megawatt hours, mega electrons, etc...
Convert 5 kilowatt hours into joules, kilojoules, megajoules, newton meters, foot pounds, watt hours, megawatt hours, mega electrons, etc...