How to use CSV to Calendar File
- Enter event rows and choose UTC or all-day dates.
- Check start and end values, including exclusive all-day ends.
- Download the ICS and review events before importing.
Example: CSV to Calendar File
A local worked example using the inputs and settings below for csv to calendar file.
You add
UTF-8 CSV file (optional): []
Pasted CSV: "summary,start,end,uid,location,description\nPlanning meeting,2026-01-05T09:00:00Z,2026-01-05T10:00:00Z,example-one,Room A,Weekly plan"
CSV separator: ","
Event times: "utc"
You get
Created one calendar file with 1 finite events.
example-one | Planning meeting | 20260105T090000Z | 20260105T100000Z
events.ics
Options
- Time kind
- UTC rows use explicit UTC timestamps. All-day rows use dates and an exclusive end date; changing the selector alone does not convert the source strings.
- UID column
- UID identifies an event. Keep a stable supplied UID when you intend to update the same event in another application, and inspect that application’s import behavior.
Supported inputs and limits
Up to 200 events. Required columns: summary,start,end; optional uid,location,description. UTC ISO timestamps or all-day dates only. All-day end dates are exclusive. No recurring events, invitations or named time zones. Blank UIDs receive local random identifiers. Dates use years 1970–2100; UTC timestamps require explicit seconds. Unsupported properties and parameters are refused.
Where your input is processed
This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.
Keep source rows with the generated file
The conversion creates the supported finite event records. It does not send invitations or update an account automatically. Check the generated title, start and end values before importing, especially when a spreadsheet has reformatted a date column.
Questions about CSV to Calendar File
Why is an all-day end date the following day?
Calendar end dates are exclusive. A one-day event ends at the start of the next day.
Can I use a named time zone?
No. Timed events use explicit UTC.
Are recurring events created?
No. Each CSV row creates one finite event.