Conversion of icbu files to ics file format

The only way to get calendar files (.ics) from iCal calendar backups (.icbu) is to recover the back in Apple Calendar (iCal) and save the calendar data in ICS format. You can always check Apple Store for new apps, maybe some new appeared that can help you with this and automate this procedure.

Open ICBU file    Open ICS file

Related software

Apple Calendar (iCal) icon

Apple Calendar (iCal)

Apple's personal calendar application for Mac OS X