What is the minimum CSV structure?

Include a header row and a Start column; Title is recommended. End, Location, Description, Categories, Recurrence, and UID are optional common fields.

Can I create all-day events?

Date-only values can be carried as date values, but you should confirm how the destination calendar interprets them after import.

Does the generated ICS include reminders?

No. The basic CSV-to-ICS export does not create alarms, reminders, attendees, organizers, or conferencing properties.

Spreadsheet → calendar workflow

Create an ICS Calendar File from Spreadsheet Data

Turn one event per CSV row into a common-field ICS file. This workflow is suited to schedules, class dates, travel plans, and other structured data that needs to be reviewed before calendar import.

Create an ICS file from CSV See the CSV to ICS guide

Use predictable columns

CalendarFlow recognizes Title, Summary, or Event for the event title; Start, Start Date, or DTSTART for the start; and End, End Date, or DTEND for the end. Location, Description or Notes, Categories, Recurrence or RRULE, and UID are optional.

Title,Start,End,Location,Categories Study group,2026-09-02T18:00:00Z,2026-09-02T19:30:00Z,Library,school

Keep dates and times in a consistent format. A UTC timestamp with Z is explicit; a date-only value needs an all-day interpretation check after import.

How to create the calendar file

Save the spreadsheet as comma-separated CSV with a header row.
Open CalendarFlow and select the CSV file.
Review the parsed events and validation message.
Choose ICS as the output, then download the generated file locally.
Test the import with a small set of events before relying on a large schedule.

What CalendarFlow writes

The generated file contains a VCALENDAR wrapper and VEVENT records with a UID, DTSTAMP, DTSTART, optional DTEND, SUMMARY, LOCATION, DESCRIPTION, CATEGORIES, and RRULE when supplied. It is a file-generation workflow, not an invitation sender.

Limitations before import

There is no automatic creation of attendees, organizer fields, alarms, reminders, conferencing links, attachments, or custom properties.
Recurrence text is written as a rule but is not expanded or checked against provider-specific exception behavior.
Time-zone names and VTIMEZONE components are not generated from ordinary CSV columns.
CSV files with semicolon or tab delimiters need to be converted to comma-separated form first.

CalendarFlow overview · ICS to CSV · Private calendar converter

Create ICS from CSV questions

Can I leave the End column blank?

Yes. The basic exporter omits DTEND when the value is blank, so review whether the destination calendar accepts an event without an end time.

How do I represent a recurring event?

Use the Recurrence or RRULE column for a rule you understand. CalendarFlow carries the text but does not expand occurrences or repair invalid recurrence logic.

Is this file sent to a calendar provider?

No. The ICS file is generated and downloaded in your browser.

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