ICS Calendar File Generator

What's actually in the file

An .ics file is plain text following the iCalendar standard (RFC 5545) — the same format every major calendar app reads and writes. This generator builds a minimal, valid VCALENDAR/VEVENT block with your details, using UTC times internally so the event lands at the correct moment regardless of which timezone the person opening it is in.

A note on all-day and recurring events

This tool covers single, timed events — the most common case. For a repeating schedule, see the RRULE Builder, which generates the recurrence rule line you'd add inside the same VEVENT block.