Free Online Converter
Merge Calendars
Merge multiple calendar files into one. Fast, secure processing directly in your browser.
How to Convert ICS to ICS
- Click or drag your ICS file into the upload area above
- Wait for the file to be loaded (happens instantly in your browser)
- Click the "Convert File" button
- Your processed ICS file will automatically download
Why Convert ICS to ICS?
Calendar exports arrive one file per calendar, but sometimes you want everything in one place — one file to import, one file to archive. This tool combines all events from every .ics file you select into a single valid iCalendar file.
All event details are preserved: times, locations, descriptions, organizers, attendees, and recurrence rules.
Merging runs in your browser; none of your calendars are uploaded anywhere.
Key Features
About ICS and ICS Formats
ICS (iCalendar Files)
ICS (iCalendar) is the standard format for calendar events. Compatible with Google Calendar, Apple Calendar, Outlook, and others.
ICS (Merged Calendar)
ICS (iCalendar) is the standard format for calendar events. Compatible with Google Calendar, Apple Calendar, Outlook, and others.
Common Use Cases
- Combine work and personal calendar exports into one archive
- Merge per-calendar files from a Google Calendar export ZIP
- Consolidate event files from several organizers into one import
Frequently Asked Questions
Are duplicate events removed?
No — all events from all files are kept as-is. If the same event exists in two files it will appear twice; most calendar apps handle re-imported duplicates by UID.
How many files can I merge?
Two or more — select them all and merge in one step.