If your contact list file is not already housed in a spreadsheet, you will need to migrate the data from your current list into a spreadsheet program such as Microsoft Excel or Google Sheets.
If your contact list file is already in a spreadsheet, saving it as a .csv is easy!
Click "File" and select "Save As." When the save menu pops up, change the File Format to "Comma Separated Values (.csv)" and save it to your computer.
- Instructions with images: How To: Export a Contact List from Excel
Click "File" and select "Download As," then select "Comma-Separated Values (.csv, current sheet)" and save it to your computer.
- Instructions with images: How To: Export a Contact List from Google Apps
Search Strings: .csv format, csv format, convert to .csv, convert to csv, save as .csv, save as csv