Free calendar file tools
See what’s in your calendar file.
Open, check and convert a schedule before you import it. Free tools for .ics and .csv files, right in your browser.
Your file
Preview
Waiting for a fileKnow what you’re importing.
See event dates, check time zones, and spot warnings before opening your calendar app.
Your calendar account is never connected.Preview
File checks
| Event | Start | End | Time zone | Repeat |
|---|
The table shows stored events, not every occurrence of a recurring series. Nothing is added to any calendar account.
What do you need to do?
Free to use. No account.ToolWhat it doesOutput
CSV to ICSTurn spreadsheet rows into a calendar file. Map your columns, check the dates, then export..ics↗ICS to CSVMove calendar events into a spreadsheet with time zones, recurrence rules and exception dates visible..csv↗ICS viewerOpen a calendar without importing it. Search events and inspect dates, time zones and repeating rules..json↗ICS import checkerFind missing IDs, invalid dates, broken structure and other common reasons an import can fail..json↗Merge ICS filesCombine calendars while keeping recurring events, edited instances, alarms and time-zone definitions..ics↗Split ICS filesBreak a large calendar into smaller valid files, keeping each recurring series and its exceptions together..zip↗Remove exact duplicatesRemove identical event records from an ICS export, with a preview of what stays and what changes..ics↗Share availability onlyMake a separate busy-time calendar with titles, notes, people, locations, links and reminders removed..ics↗Create an ICS eventCreate a downloadable calendar event or a bounded repeating series without a calendar account..ics↗