Go to your Contacts
Then "lists"
Long Press iCLOUD
Then Export
Then download the VCF file.
(Google does not recognize VCF so you must convert it to CSV file)
Use a file converter.
Import the downloaded VCF file to the tool and hit convert.
Download the new CSV file.
Then go to https://contacts.google.com/
Select “import”
Import your new CSV file.
