What software can quickly and easily perform the following task:

Separate the events from a single .ics calendar file that contains multiple calendars into separate .ics files, one for each calendar.

The data is all ASCII text, and the format is:

BEGIN:VEVENT ...data... ORGANIZER:CN=[calendar name] ...data... END:VEVENT

(full format specifications can be found here)

All I want is to create multiple .ics files, each containing only events from the respective calendar.


  1. OS: Windows or Android
  2. If for Windows, does not require installing a large programming environment


  1. If for Windows, have a portable version, or at least a "no installer" version
  2. Gratis (free of charge)


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