Convert a calendar export (.ics) to a CSV table locally - one appointment per row, no upload.
Running locally on your device ...
Running locally on your device ...
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Your files never left your device
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No re-upload neededThese tools accept .CSV - your file is handed over directly.
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
Google Calendar, Outlook and Apple Calendar export appointments as an iCalendar file (.ics), often with many events in a single file. If you want to analyse, filter or import these appointments into another system via a spreadsheet, CSV is the more common format.
This tool reads the file entirely locally in the browser following the iCalendar grammar (RFC 5545) and splits every BEGIN:VEVENT block into its own row: title, start, end, all-day flag, location, description and unique ID land in fixed columns. Start/end times are output in readable ISO 8601 format.
Your appointments never leave your device in the process - unlike online converters that upload a calendar file with private appointments to a third-party server. The conversion even works offline.
| Input formats | ICS |
|---|---|
| Output format | CSV |
| Batch processing | No |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Fixed columns: summary, start, end, all-day, location, description, uid. Recurring events (RRULE), reminders and attendee lists are not read - every event is treated as a single, non-recurring row. A timezone-qualified local time is carried over unchanged, without converting via a timezone database. Very large calendars need memory.
No. The conversion runs entirely locally in the browser - your appointments stay private.
No, every VEVENT block is treated as a single row, without expanding the recurrence rule.
Via the dedicated all-day column (true/false), derived from the DTSTART date type.
No, reminders (VALARM) are not read.
Yes, use the "CSV to ICS" tool.