CSV & JSON to Calendar: practical workflow and limits

Turn structured event rows into validated importable calendar files.

Use the guide alongside the working tool.

Try the local sample

{
  "start": "2026-11-01",
  "end": "2026-12-31",
  "zone": "UTC",
  "weekends": "0,6",
  "holidays": "",
  "data": "title,start,end,allDay,zone\nPlanning,2026-11-10T09:00:00,2026-11-10T10:00:00,false,UTC\nCompany day,2026-11-14,2026-11-15,true,UTC"
}

Turn structured event rows into validated importable calendar files. Required fields: title, start, end; optional allDay, zone, description and location. CSV must have named headers and RFC-style quoting. All-day end dates are exclusive; timed values use YYYY-MM-DDTHH:mm:ss. Recurrence is not inferred.

Prepare the calendar

Turn structured event rows into validated importable calendar files.

Use the sample to inspect the exact workflow. Set the planning range and replace the demonstration entries with your own dates.

Check the assumptions

Required fields: title, start, end; optional allDay, zone, description and location. CSV must have named headers and RFC-style quoting. All-day end dates are exclusive; timed values use YYYY-MM-DDTHH:mm:ss. Recurrence is not inferred.

Dates are inclusive in planning inputs unless labeled exclusive. Timed events require a valid IANA timezone; ambiguous daylight-saving times are rejected.

Keep and share the result

Review warnings and totals, then export the supported ICS, CSV, JSON or report formats. Exports contain the chosen data, so review sensitive names and notes before sharing.

No calendar account is connected and no reminder is scheduled by this website. Import the ICS file explicitly into a calendar app; save a JSON draft if you want to continue editing later.

Ready to apply this workflow?

Try CSV & JSON to Calendar →

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All practical guides →

Keep your original files and review the result. Found unclear instructions? Contact Team Hypomnema.