Depending on what state your company is located in, this could be as simple as filing a single form with that state’s governing agency. In some states, this may be more complicated, but there’s always a way. Keep in mind, by converting the entity, you will likely have to get it a new Tax ID Number, since it’s now a different entity. If there’s a partnership agreement, or certain rights with respect to voting or capital return, be careful about property transferring all of that over. Consult with tax and legal counsel.