The mass and energy equivalent to 1 a m u respectively are

1 amu is defined as 

$\frac{1}{12} \mathrm{of} \mathrm{mass} \mathrm{of} \mathrm{carbon} \mathrm{atom}$

$\mathrm{mass} \mathrm{of} 1 \mathrm{carbon} \mathrm{atom}= \frac{12}{6.023\times {10}^{23}}\mathrm{gm}$

$\mathrm{mass} \mathrm{of} \frac{1}{12}\mathrm{th} \mathrm{of} \mathrm{carbon} \mathrm{atom} \mathrm{is} \frac{1}{6.023\times {10}^{23}}\times {10}^{-3}\mathrm{kg}$

$\mathrm{mass} \mathrm{of} \frac{1}{12}\mathrm{th} \mathrm{of} \mathrm{carbon} \mathrm{atom} =1.67\times {10}^{-27}kg$

$\mathrm{its} \mathrm{energy} \mathrm{equivalent}=1.67\times {10}^{-27}\mathrm{kg}\times 9\times {10}^{16}\mathrm{J}$

$or \frac{1.67\times 9\times {10}^{-11}}{1.6\times {10}^{-19}}ev=931.5MeV$