1018 watt hours equals 3.66 megajoules.
Convert 1018 watt hours into joules, kilojoules, calories, newton meters, foot pounds, kilowatt hours, megawatt hours, mega electrons, etc...
Convert 4 megajoules into joules, kilojoules, calories, newton meters, foot pounds, kilowatt hours, megawatt hours, mega electrons, etc...