calporterCalendar file tools

Free calendar file tools

Remove Exact Duplicate Calendar Events

Remove identical event records from an ICS export, with a preview of what stays and what changes.

Calendar won’t import?Start with the import checklist
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Files stay on your device

Your file

Paste ICS text instead ＋

Choose a file to get started.

Preview

Waiting for a file

Know what you’re importing.

See event dates, check time zones, and spot warnings before opening your calendar app.

Your calendar account is never connected.

Same title and time do not prove two events are duplicates. This tool removes only identical records and preserves conflicting versions for review.

How to use this tool

  1. Open your exported calendar.
  2. Review the exact-copy count and any identity conflicts.
  3. Save a cleaned copy and test it in a separate calendar.

Before you export

Does it delete events from my calendar account?＋

No. It creates a new local ICS file. It never connects to your calendar account.

What counts as an exact duplicate?＋

All parsed properties and nested components must match, including UID, times, notes and alarms. A different revision or changed property is retained.

Uses the iCalendar standard. Keep the original file and test the output in your receiving calendar app.

Duplicate calendar events: exact copies versus changed versions →