How to convert eV to Mega eV?

Excuse me, could you please clarify for me how one might go about converting electronvolts (eV) into megaelectronvolts (MeV)? I understand that electronvolts are a unit of energy used frequently in physics, particularly in the context of atomic and nuclear phenomena, but I'm not entirely clear on the conversion process to scale up to megaelectronvolts. Is there a simple mathematical formula or procedure that can be followed to make this conversion? Thank you for your assistance.