CSV ICS

CSV to ICS Converter

Convert CSV to ICS in your browser. Free, private, and fast. Preserve text, structure, and as much formatting as possible without sending files to a server.

Drag & drop your CSV file here

or

Max file size: 50 MB · Your file stays in your browser

Your file is processed locally in your browser — nothing is ever uploaded.

Why Convert CSV to ICS?

Converting CSV to ICS is a common task whenever a file has to work somewhere that expects the other format. CSV is a plain-text format for tabular data where each line represents a row and commas separate column values. ICS is the iCalendar format used to share calendar events between Google Calendar, Apple Calendar, Outlook and other planners. This converter makes the switch locally in your browser — nothing is uploaded.

Common use cases

  • You have a CSV file and need it in ICS format.
  • The target software or platform requires ICS but your file is in CSV.
  • Typical use of ICS: Reviewing a calendar export in Excel.
  • You want to reduce file size or improve compatibility without using desktop software.
Keep in mind: Recurring-event rules are listed as text rather than expanded into single dates, and attendee lists and reminders are not included in the table.

How to Convert CSV to ICS

  1. Upload or drop your CSV file into the converter above.
  2. Adjust any output settings for ICS if needed.
  3. Click Convert and download your converted file instantly.

About the Formats

CSV (Comma-Separated Values)

CSV is a plain-text format for tabular data where each line represents a row and commas separate column values. It is the most universal data-exchange format — virtually every database, spreadsheet application, CRM, and analytics tool can import and export CSV files without any special configuration.

Compatibility: Universal — supported by Excel, Google Sheets, LibreOffice, every database system, and virtually all data tools.

ICS (iCalendar)

ICS is the iCalendar format used to share calendar events between Google Calendar, Apple Calendar, Outlook and other planners. An .ics file holds one or many events as plain text.

Compatibility: Supported by Google Calendar, Apple Calendar, Outlook, Thunderbird and most calendar apps.

100% Private & Browser-Based

Your files never leave your device. All conversion happens locally in your browser — nothing is uploaded to any server. No sign-up required.

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Need the reverse?

ICS to CSV Converter

FAQ

Frequently Asked Questions

Yes — completely free with no sign-up, no watermarks, and no size limits for typical files.

Quality depends on the output settings. For lossless output, choose the highest quality setting available.

Your file is processed entirely within your browser using local JavaScript. It is never uploaded to any server. Only you can access your file.

For browser-based conversion, files up to 50 MB work best. Very large files may take longer depending on your device. We recommend splitting very large files before converting.

Currently, AintoB converts one file at a time to keep the browser-based process simple and private. Reload the page to convert another file.