Office 365 - Importing Contacts into Gmail
This document describes how to import your Office 365 contacts into a Gmail account.
Under the Google logo, click Gmail to access the drop-down menu, then click Contacts.
Click Import Contacts... on the left side, then click Browse.
Choose the .csv file that you exported from Office 365 (see Office 365 (Outlook on the web) - Import/Export Contacts).
Your Office 365 contacts have now been added to your Gmail account.