About this tool
Build a portable calendar event file that recipients can import without requiring access to the same calendar service or account.
Calendar Event Generator builds a portable RFC-style ICS file with correct date forms, escaped content, recurrence, and optional reminder data.
- Supports timed and all-day events with correct exclusive end dates for multi-day all-day events.
- Adds location, meeting URL, notes, daily, weekly or monthly recurrence, and display reminders.
- Escapes and folds ICS content, uses a selected IANA zone for wall-time validation, and downloads a structurally validated .ics file.
How to use Calendar Event
Enter event dates and details, choose timed or all-day mode, select the IANA zone that owns a timed wall clock value, add recurrence and a reminder if needed, review the preview, and download the .ics file for import.
When this tool is useful
- When sending an event to people using different calendar providers.
- When a website or email needs a downloadable calendar attachment.
- When creating repeating reminders without exposing event details to a service.
Practical tips
- Import the file once in a test calendar before distributing it.
- Confirm the selected IANA zone before exporting a timed event near a daylight-saving transition.
- All-day event end dates are exclusive in ICS and are handled automatically.
Examples you can test
Load an example, compare the result with the expected output, then replace it with your own input.
Create a weekly review event
Example input
Friday 10:00-11:00; weekly; 6 occurrences; 15-minute reminder
Expected output
One ICS event with selected-zone wall time, transition data, weekly RRULE, and display alarm.
Test import confirms timezone and recurrence behavior in the destination calendar.
Validation checklist
- Confirm start, end, and the selected IANA timezone.
- Check recurrence count and reminder timing.
- Test import in the target calendar.
- Verify meeting URL and location after import.