To convert an ICS file to CSV easily, you can use the SysInfo ICS to CSV Converter. This tool lets you change your iCalendar (ICS) files into CSV format without losing any data. You can add one or many ICS files at once, and the software will keep all your calendar details safe and organized. It also allows you to choose between saving the CSV as a general Excel file or a Google CSV format. Before converting, you can preview your calendar files and even remove duplicate events.
Read more: https://www.sysinfotools.com/converter/ics-to-csv.php