How to import or export Outlook contacts to Gmail?

TIP: Latest version of vCard ImportExport allows to transfer contacts automatically just by entering login info.

Import Gmail contacts to Microsoft Outlook

To import Gmail contacts to Microsoft Outlook, first you have to export Gmail contacts to vCard files. Refer to the link below for directions for exporting:
http://support.google.com/mail/bin/answer.py?hl=en&answer=24911

Then use vCard ImportExport application to import resulting vCard files to Microsoft Outlook.

Export Outlook contacts to Gmail

To export Microsoft Outlook contacts to Gmail, use vCard ImportExport application. Save the contacts as vCard file.

Then import this resulting vCard file to Gmail. Refer to the link below for directions for importing:
http://support.google.com/mail/bin/answer.py?hl=en&answer=183711