521 calories equals 2,179.86 kilojoules.
Convert 521 calories into joules, megajoules, newton meters, foot pounds, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...
Convert 2180 kilojoules into joules, megajoules, newton meters, foot pounds, watt hours, kilowatt hours, megawatt hours, mega electrons, etc...