6643 calories equals 0.01 megawatt hours.
Convert 6643 calories into joules, kilojoules, megajoules, newton meters, foot pounds, watt hours, kilowatt hours, mega electrons, etc...
Convert 1 megawatt hours into joules, kilojoules, megajoules, newton meters, foot pounds, watt hours, kilowatt hours, mega electrons, etc...