# Confusion with units : MeV/C2

So 1u = 931.5Mev/c2 = 1.67 10_27 kg . the thing is when i calculate E=mC2 with both units the calculations dont match . i can't understand why .

kith

Amine_prince
Thank you for the attention sir . unfortunately i am using my phone to type so i cannot write all the calculation . can you please write the Energy released out of a mass defect of 1u by using Kg first then MeV /C2 as the unit of mass ? That can solve my problem

The problem is solved . thank you

ZapperZ
Staff Emeritus