4220 megajoules equals 3,112,507,560 foot pounds.
Convert 4220 megajoules into joules, kilojoules, calories, newton meters, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...
Convert 3112507561 foot pounds into joules, kilojoules, calories, newton meters, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...