To transfer contacts from Android to Gmail, you may need a contact manager that can easily import and export your contacts between Android phone and computer. In my personal opinion, Android Transfer would be the best choice for you. With it, you may backup your contacts to the cloud storage on Google so that you won't get them lost or deleted by accident.
Android Transfer provides a brand new way for you to export your contacts as multiple formats so that you can import them to Outlook, Gmail or other service.
Install it like other software. Connect your Android phone to your computer. The transfer will detect your phone once it's connected. And the basic information will be displayed on the main window.
Step 2 Export Android contacts to computer
Click “Contacts” on the left column. Check the ones in the contacts window you want to export. Click “Import/Export” - “Export selected contacts to computer” - “to vCard file”. And save them on the computer temporarily.
Step 3 Backup Android contacts to Gmail
Now, login your Google Contacts, click More on the menu bar and select “Import”. Then, click “Choose File” and navigate to the place where you saved the contacts. After that, click “Import”.
Note: If you are using other email accounts, you can also import the vCard files similarly backup you contacts to email.
That's it. You may also transfer the contact vCard file to Outlook from Android with Android Transfer. Feel the convenience brought by Android Transfer. Click and download it below.