6640 calories equals 7.72 kilowatt hours.
Convert 6640 calories into joules, kilojoules, megajoules, newton meters, foot pounds, watt hours, megawatt hours, mega electrons, etc...
Convert 8 kilowatt hours into joules, kilojoules, megajoules, newton meters, foot pounds, watt hours, megawatt hours, mega electrons, etc...