CSV stands for Comma Separated Value. It is a file format that stores its text data in a way that separates data in a logical manner. Many calendar applications, including Microsoft Outlook, format their exported calendar events in a CSV document. The ICS, or iCal, format is a universal calendar format used by Apple iCal, Google Calendar and Mozilla Sunbird. You can convert a CSV file into the iCal format using a CSV-to-iCal conversion program.
Open the converter link included in the Resources section below.
Click "Browse" and navigate to the directory on your hard drive containing the .CSV file. Click it, and then click "Open."
Give your calendar a name, and enter your time zone.
Your file will be returned in .ICS format. Save it to your hard drive for use in applications that support ICS calendars.