4120 megajoules equals 3,038,751,456.68 foot pounds.
Convert 4120 megajoules into joules, kilojoules, calories, newton meters, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...
Convert 3038751457 foot pounds into joules, kilojoules, calories, newton meters, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...