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Conversion from u to kg   Conversion equation:  1 u = x kg x = {mu}    Value of conversion factor:  x = 1.660 539 066 60(50) x 10-27   Your input value:  1.200 000 000 000 00... x 101 u   Your converted value:  1.992 646 879 92(60) x 10-26 kg    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