ICS Calendar Viewer & Creator
Open, inspect, and create .ics / iCalendar files directly in your browser.
No calendar events loaded yet. Upload an .ics file or create an event in the Creator.
How does this tool work?
Parses .ics files (RFC 5545) locally in the browser, clearly displaying events, recurrence rules, alarms, and attendees.
Upload an .ics file via drag & drop or paste VCALENDAR text. The tool extracts all VEVENT records, converts timezones accurately, translates RRULE patterns into human-readable text, and provides 1-click export to Google Calendar, Outlook Web, JSON, or CSV.
Where are my data processed?
100% Client-Side: Your data never leaves your browser.
All calculations, conversions, encodings, and file processing of this tool are executed exclusively locally via JavaScript on your client device. No inputs, passwords, cryptographic keys, texts, or uploaded files are ever sent to our servers or third parties. Once the page is loaded, the tool remains completely functional even offline.