Convert function between custom modules or something similar?

Convert function between custom modules or something similar?

I created a custom module called Professores (teachers), similar to Contatos (contacts). Eventually we get contacts of people who are likely to become teachers at our school and so I thought how interesting it would be if it were possible to include the function of the Converter items of Contatos (contacts) to module Professores (teachers), just as occurs with Leads and Contacts.

Is there a way to include the Convert function between custom modules or something similar?