iCal Converter – Free ICS Tools

iCal Converter is a free suite of online iCalendar (ICS) tools. Convert, fix, merge, split and validate calendar files — everything runs privately in your browser.

Available tools

• ICS to CSV Converter – Convert ICS calendar files to CSV format for Microsoft Excel, Google Sheets, and LibreOffice. Recurring events, timezones, and all fields preserved. Free, instant, browser-based.
• ICS to Excel Converter – Open ICS calendar files in Microsoft Excel. Convert iCalendar events to a UTF-8 spreadsheet with title, start, end, location and description columns. Free, instant, browser-based — no upload.
• CSV to ICS Converter – Convert CSV files (or Excel exports) into iCalendar (.ics) files for Google Calendar, Outlook, and Apple Calendar. Free, in-browser, supports multiple date formats and timezones.
• Import ICS to Google Calendar – Optimize ICS files for seamless Google Calendar import. Fix timezone mismatches, encoding issues, and incompatible properties. Free browser tool, no upload required.
• ICS to JSON Converter – Convert ICS calendar files to JSON format for REST APIs, web apps, and developer integrations. Structured output with ISO 8601 dates. Free, browser-based, no upload.
• Fix & Clean ICS Files – Repair broken ICS calendar files: fix timezone errors, clean invalid characters, correct line folding, and ensure RFC 5545 compliance. Works with Outlook, Google Calendar, Apple Calendar exports.
• Merge ICS Files – Merge multiple ICS calendar files into a single unified calendar. Handles duplicates, preserves timezones and recurring events. Works with Outlook, Google Calendar, Apple Calendar. Free online tool.
• iCal Splitter – Free online ICS splitter: break a large iCalendar (.ics) file into separate files by event category. Automatically detects CATEGORIES — no upload, runs in your browser.
• ICS File Validator – Validate ICS files against RFC 5545 iCalendar standard. Detects errors, warnings, and compatibility issues with Google Calendar, Outlook, and Apple Calendar. Free online validator.
• Remove Duplicate Calendar Events from ICS Files – Find and remove duplicate events from ICS calendar files. Detects duplicates by UID, title, date, and location. Preview before removing. Free browser tool, no uploads.
• Export Outlook Calendar to ICS – Export Microsoft Outlook calendar to ICS format with timezone fixes. Works with Outlook desktop, web, and Microsoft 365. Fix Windows timezone identifiers for Google Calendar and Apple Calendar compatibility.
• Import ICS to Outlook – Import ICS calendar files into Microsoft Outlook without errors. Fix timezone, encoding, and format issues before importing. Works with Outlook desktop, web, and Microsoft 365.