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Conversion from kg to J   Conversion equation:  (1 kg)c2 = x J x = {c2}    Value of conversion factor:  x = 8.987 551 787... x 1016   Your input value:  1.000 000 000 000 00... x 10-3 kg   Your converted value:  8.987 551 787 368 18... x 1013 J    Note: {Q} is the numerical value of Q when Q is expressed in SI units   Source: 2018 CODATA      recommended values  Definition of uncertainty       Basis of conversion factors for energy equivalents