How to Import .ics Files to Mozilla Thunderbird Calendar

Stop calendar chaos with Mozilla Thunderbird. Import .ics files to your desktop calendar and take control of your schedule offline.

Prerequisites

Mozilla Thunderbird with Lightning calendar add-on installed

.ics file ready for import

Thunderbird application running

Open Mozilla Thunderbird: Launch Thunderbird and ensure Lightning add-on is enabled

Access Calendar View: Click the "Calendar" tab or use View → Calendar

Open Import Dialog: Go to File → Import → Calendar File, or right-click calendar and select "Import Calendar File"

Select Your .ics File: Browse to locate your .ics file and click "Open"

Choose Calendar Destination: Select which calendar to import events into

Complete Import: Click "Import" to finish

Drag the .ics file from your file manager

Drop it directly onto the Thunderbird calendar view

Thunderbird will automatically import the events

End meeting chaos: Import events from colleagues without double-booking

Desktop application: Works offline and integrates with your system

Stop calendar cram: Bulk import multiple events at once

Cross-platform compatibility: Import from any calendar application

Local storage: Your calendar data stays on your computer

If events don't appear, ensure the Lightning add-on is properly installed and restart Thunderbird.