7940 megajoules equals 2.21 megawatt hours.
Convert 7940 megajoules into joules, kilojoules, calories, newton meters, foot pounds, watt hours, kilowatt hours, mega electrons, etc...
Convert 3 megawatt hours into joules, kilojoules, calories, newton meters, foot pounds, watt hours, kilowatt hours, mega electrons, etc...