ICS
A text-based calendar interchange format for events, tasks, journal entries, free-busy information, recurrence rules, alarms, and related scheduling data.
General information
- Format name
- iCalendar File
- Extensions
.ics.ifb- MIME type
text/calendar- Category
- data
- Data type
- Text
- Developer
- Internet Engineering Task Force
Common uses
Calendar events
Meeting invitations
Schedule exports
Recurring events
Calendar synchronization
Related formats
Technical resources
| Resource | Publisher | Link |
|---|---|---|
| RFC 5545 — Internet Calendaring and Scheduling Core Object Specification (iCalendar) | RFC Editor | Open resource ↗ |
| Media Types Registry | IANA | Open resource ↗ |
Record information
- Verified
- October 4, 2026
- Last updated
- October 4, 2026