How can i change my gmail account to an apple id

Please click on the links and read the documents -->

Change your Apple ID - https://support.apple.com/HT202667 - "Follow these steps to change the email address that you use as your Apple ID."

• You may also wish to turn off "Find My" before changing information and turn it on again afterward.
• Apple does not have an email re-use statement but if you have used this email address with Apple in another capacity, other user have observed you may not be allowed to use it for your Apple ID.

"After you change your Apple ID email address or password, you might need to update your sign-in information with any Apple services you're using" Click on this link to read "What to do after [or before] you change your Apple ID email address or password" --> https://support.apple.com/HT204071