Converting your personal account to a Page creates a new Facebook Page that's based on your personal account. You can only convert your profile to a Page once.
When you convert your personal account to a Page:
· You'll have a personal account and a Page after conversion
· We'll transfer your profile picture and cover photo to the Page
· The name on your personal account will become the Page's name
· Tools to help you move info from your profile to the Page will be available for 14 days after conversion
· You can choose friends from your profile to automatically like your new Page, but posts on your profile won't be carried over to your new Page
For more details visit:-Facebook technical support