Free Online ICS File Tools
Convert ICS (iCalendar) files to and from CSV, Excel, TXT, PDF, and JSON formats. View, validate, merge, and split calendar files and manage events. Fast, secure, and free to use.
Every tool runs entirely in your browser — with one exception: the AI-powered Anything to ICS converter uploads your file to an AI service to read the events out of it.
Choose Your Tool
ICS File Tools
Professional calendar management tools for viewing, creating, editing, validating, merging, and splitting your ICS files. Complete calendar lifecycle management from creation to analysis.
What is ICS?
ICS (iCalendar) is a standard file format for calendar data. ICS files contain event information including dates, times, locations, descriptions, and other calendar details.
Our tools support ICS format and ensure compatibility with popular calendar applications like Google Calendar, Outlook Calendar, Apple Calendar, and more.
Why Use Our Tools?
- ✓Unlimited events with no hidden costs or limitations
- ✓All processing happens in your browser - your data stays private
- ✓Supports large files and batch conversions
- ✓Works offline once the page is loaded
- ✓Compatible with all modern browsers
Supported File Formats
Input Formats
Output Formats
Compatible With
How It Works
Simple, secure, and fast ICS processing in just three steps
Upload Your File
Choose your ICS, CSV, Excel, TXT, or JSON file. Simply drag and drop or click to select from your device.
Choose Output Format
Select your desired output format and configure any conversion settings. All processing happens in your browser.
Download Results
Your converted file is ready instantly. Download it and import into your favorite calendar application.
Why Choose ICS File?
The most comprehensive and secure calendar conversion platform with advanced features for all your needs
Private by Default
Conversion happens locally in your browser, so your files never leave your device. The one exception is the AI converter, which uploads your file to read it — and says so before you do.
Lightning Fast
Convert thousands of events in seconds. No waiting for uploads or downloads - instant local processing.
Completely Free
No hidden fees, no registration, no paid tier. The browser tools have no file size limits at all; the AI converter is free too, within a monthly allowance.
Works Everywhere
Compatible with all modern browsers and devices. Works offline once loaded, perfect for mobile use.
Professional Tools
Advanced calendar management features like event viewing, file conversion, and batch processing capabilities.
Universal Support
Supports all major calendar platforms: Google, Outlook, Apple, CalDAV, and more with perfect compatibility.
Perfect For Every Need
From personal contact management to enterprise-level operations
Personal Use
Organize personal events, sync between devices, backup calendars
Business
Manage team schedules, client appointments, business events
Enterprise
Large-scale calendar migrations, system integrations, bulk operations
Developers
API testing, data formatting, application development