# MeV to kg Conversion

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### MeV to kg Conversion

For MeV to kg Conversion, yse $E=mc^{2}$ to convert Joules to kg and then use the fact that 1 MeV is the energy required to move a charge $e$ across a potential difference of $10^{6}$ volts. Thus 1 MeV is $1.6 \times 10^{-19} \times 10^{6}$ Joules. Therefore

\[

m ({\rm kg}) = \frac{10^{6} \ e E({\rm MeV})}{c^{2}}

\]

or

\[

m ({\rm kg}) = 1.780 \times 10^{-30} \ E({\rm MeV})

\]

A handy thing to remember is that the electron rest mass is equivalent to 0.511 MeV.