To know how can I export Outlook calendar to iCal use PST to ICS Conversion tool as through this software user can change Unicode and ANSI files with the same way. With this software user can convert calendars of files with the help of preview option as through this option user can view selected files and can deselect those files which are not necessary to convert. With any Windows OS this software can be used and in the same manner as this tool supports all Windows OS with equal levels. To better understand how can I export Outlook calendar to iCal user can try migration process through our free version of this software and can change calendars of first 25 files.