The following steps help you transform names and addresses you’ve saved in Google Contacts into a standard (comma-separated value or .csv) file you may use as a data source for postal service ...

CSV files are special text files that are quite common when dealing with spreadsheets. Here's how to open and make them.

You can create a CSV file with programs that include Excel, Google Sheets and OpenOffice Calc, as well as simple word processing programs like Notepad.

Choose to save your contacts as a CSV file, depending on if if you want to export to a Google or Microsoft Outlook account, or a vCard (Virtual Contact File) for other services.