Compare
ICS vs CSV
ICS represents calendar events and scheduling data with fields for dates, recurrence, time zones, and other event details. CSV stores rows and columns, so calendar applications may require a specific column layout and mapping to import it.
Which format should you choose?
Use ICS to exchange calendar events and preserve scheduling semantics; use CSV for tabular analysis or when the receiving system requires a defined spreadsheet import.
Good fit for iCalendar
Events, tasks, and availability exchange
- Sharing calendar information between apps
Good fit for CSV
Tabular-data exchange
- Transferring one simple table between applications
Basic information
| Field | iCalendar | CSV |
|---|---|---|
| Extension | .ics | .csv |
| MIME type | text/calendar | text/csv |
| Common uses | Events, tasks, and availability exchange | Tabular-data exchange |
| How to open | Import it into a compatible calendar app and verify dates, time zones, and recurrence. | When importing into a spreadsheet, set the character encoding and delimiter. Check that leading zeros, date-like values, and long numbers are not automatically converted. |
| Export or convert | When converting to tables, check that recurrence and time-zone information are retained. | Exporting XLSX to CSV normally writes values from only one selected sheet. Keep formulas, formatting, other sheets, and charts separately. |
Choose by use case
Sharing calendar information between apps
Events, tasks, and availability exchange
iCalendarTransferring one simple table between applications
Tabular-data exchange
CSVKey point 1
ICS is a calendar data format with event-specific properties.
More on the differencesKey point 2
CSV is a plain-text table whose columns do not inherently define calendar meaning.
More on the differencesMore on the differences
Confirm whether the recipient expects ICS or a documented CSV template. Test recurring events, time zones, attendees, and reminders in the destination calendar before importing a large set.
- ICS can express calendar concepts such as recurrence and event times.
- CSV represents records in rows and fields separated by delimiters.
- A CSV-to-calendar import may lose semantics unless the app maps columns explicitly.
Frequently asked questions
Can CSV preserve recurring calendar events?
Not by itself in a standard way; the target application's import template and mapping determine what can be represented.