20520 megajoules equals 4,904,397.71 calories.
Convert 20520 megajoules into joules, kilojoules, newton meters, foot pounds, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...
Convert 4904398 calories into joules, kilojoules, newton meters, foot pounds, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...