some image

Transform Calendar Data with Complete Privacy

iCAL ↔ CSV Converter

iCAL to CSV Converter is a comprehensive offline calendar conversion solution trusted by over 7,000 professionals and organizations worldwide. Convert ICS (iCalendar) files to CSV spreadsheets or CSV data back to ICS calendar format — all while keeping your sensitive scheduling data completely private on your local machine.

Core Capabilities: Bidirectional Conversion

  • ICS → CSV: Extract calendar events, appointments, and schedules into Excel-compatible CSV format for analysis, reporting, or archival.
  • CSV → ICS: Convert structured spreadsheet data into standard ICS calendar files through flexible column-to-field mapping. Create the ICS file locally, then import it into any calendar application (Outlook, Google Calendar, Apple Calendar, etc.)

Professional Features

  • 📅 ICS → CSV: Open any .ics calendar file and export events, todos, and journals to clean spreadsheet-ready CSV
  • 📊 CSV → ICS: Turn any spreadsheet into calendar events — map your columns, merge fields, preview, and export
  • 📦 Batch convert: Drop in multiple .ics files and export them all to CSV in one go
  • 🌍 50+ languages: Use the app in your language — Hindi, Spanish, French, German, Japanese, and more
  • 🔒 100% private: All conversion happens on your device — your data never leaves your machine
  • 🗓 Flexible date formats: Choose how dates appear — ISO, US, European, or custom formats
  • Real-time validation: Detect parsing errors, invalid dates, and missing fields before export with detailed logs

Multi-Component Support

  • ✔ VTODO entries (tasks and to-do items)
  • 📝 VJOURNAL entries (notes and journal entries)
  • 👥 Event attendees and organizers
  • 📍 Location and description fields

Licensing and Trial

Transparent Pricing Model

  • Download and install free of charge
  • Unlimited trial period with no time restrictions
  • Trial mode converts up to 7 rows per file for evaluation
  • Purchase modules separately based on your needs

Pay Only for What You Use
Unlike subscription services or all-or-nothing pricing, purchase only the conversion direction you require. Ideal for organizations with specific workflow needs or individual users who primarily work in one direction.

Ideal Use Cases

  • IT administrators: migrating calendar data between platforms
  • Business analysts: extracting event data for reporting and analysis
  • Project managers: importing milestones and deadlines into calendars
  • Administrative staff: Cleaning up, editing, or reorganizing messy calendar data using Excel before importing it back into your calendar
  • Data archival and long-term storage of calendar information
  • Anyone who wants a fast, offline way to move calendar data between spreadsheets and calendar apps

Download and Start Converting Today

Try the full application risk-free with an unlimited trial duration. See immediate results with the first 7 events from any file. Upgrade only when you're confident the tool meets your needs.

No credit card required. No automatic renewals. No subscription fees.


Screenshots

  • DesktopScreenShot-1
  • DesktopScreenShot-2
  • DesktopScreenShot-3
  • DesktopScreenShot-4
  • DesktopScreenShot-5
  • DesktopScreenShot-6
  • DesktopScreenShot-7
  • DesktopScreenShot-8
  • DesktopScreenShot-9


Version History


Version Date Description
6.0.6.0 2026-02-27 Bug Fixes
6.0.2 2026-02-19 Rebuilt on .NET with Modern Blazor UI and Dark mode support — faster, smoother, and more responsive.

ICS to CSV
  • Grid filtering, sorting, and column visibility
  • Split date & time into separate columns
  • Copy to clipboard
CSV to ICS
  • Improved and flexible column mapping in CSV to ICS module
  • Auto date format detection
  • Dates are now properly converted to UTC with Z markers in ICS, so meeting times are correct across all timezones
5.0.0.0 2025-04-15 New advance interface for CSV to ICS file converter module.
4.6.9.0 2025-02-27 Bug Fixes
4.6.7.0 2025-01-24 Bug Fixes
4.6.4.0 2024-09-16 Published_Version with New Translations
4.6.3.0 2024-08-05 Published Version
4.6.2.0 2024-08-01 Published_Version
4.6.1.0 2024-07-24 Published_Version wit NuGet Package Updates
4.6.0.0 2024-05-24 Published_Version
4.4.0.0 2024-04-19 Published_Version
3.0.23.0 2023-12-06 Published Version fixing addon logic
3.0.22.0 2023-12-06 Published Version fixing addon logic
3.0.19.0 2022-09-16 Published_Version
3.0.17.0 2022-07-05 Published_Version
3.0.16.0 2022-06-14 Published_Version
2.0.2.0 2018-04-16
1.1.2.0 2017-04-05
1.1.1.0 2017-04-01
1.0.1.0 2017-03-09
1.0.0.0 2017-03-02
Please email us at team@freytag.us to let us know of features you would like to have added or bugs needing fixing.

Privacy & Security Policy