iCal (.ics) Builder: How to Create Calendar Events That Work Everywhere
Sunil Kalikayi4/8/20264 min read
What .ics Files Are Used For
Event invitations that work across all calendar apps. Conference and meetup 'Add to Calendar' buttons. Email newsletter event announcements. Automated calendar subscriptions (recurring events). Meeting confirmations from booking systems (Calendly, Cal.com output .ics files).
Key .ics Fields
DTSTART: event start date/time (must include timezone or be UTC). DTEND: event end time. SUMMARY: event title. DESCRIPTION: full event details, agenda, links. LOCATION: physical address or video conference URL. ORGANIZER: the event creator's email. ATTENDEE: invited participants (triggers calendar invites). RRULE: recurrence rule for repeating events.
Frequently Asked Questions
Create .ics calendar event
Build a universal calendar invite file with the free iCal Builder.
Open iCal Builder