Skip to content

For teams & companies: meet Ridian

Kalender Sync by
ICS toolkit

Create an ICS file plus add-to-calendar links

Enter an event, download the .ics or copy links for Google Calendar and Outlook, e.g. for newsletters, invitations or websites. Your file is never uploaded: everything runs locally in your browser, we never see a single event.

Works with GoogleOutlookApple and every common calendar

Processed locally with ical.js (MPL-2.0).

In three steps

  1. 01

    Enter the event

    Title, date, time and time zone. Optionally location, description, recurrence and reminder. Several events are possible.

  2. 02

    Download the file

    The .ics file works in Apple Calendar, Outlook, Google Calendar, Thunderbird and every other common calendar.

  3. 03

    Or share a link

    Each event gets ready-made links that open it prefilled in Google Calendar or Outlook.

Sending and embedding an ICS file

A self-made ICS file is the easiest way for others to add your event in one click, whichever calendar they use.

By email or newsletter

Attach the .ics to the email or link it. In newsletters the add-to-calendar links often work better than an attachment: Google and Outlook users land straight in the prefilled event, Apple users get the download.

On your own website

Upload the .ics file to your web server and link it next to the Google and Outlook links. That covers all major calendars without embedding a widget or third-party script.

Tips for events that arrive correctly everywhere

  • Always set the time zone: we write it with its DST rules into the file so 10:00 converts correctly in other zones too.
  • Online meetings: put the meeting link in the "Link" field and in the description too; some calendars don't show the URL field.
  • Set reminders deliberately: many calendars keep them, some ignore reminders from external files.
  • Changes: a sent ICS file doesn't update itself. If things change often, a subscription or a sync is the better route.

FAQ

How do I create an ICS file?
Fill in the event above and click "Download ICS". Send the file by email, link it on your website or import it yourself.
Can one ICS file hold several events?
Yes: with "Add another event" all events end up in one file.
How do I make an "add to calendar" link?
Once you've entered the event, links for Google Calendar, Outlook.com and Microsoft 365 appear. For Apple Calendar, link the .ics file itself.
Why does the time zone matter?
Without a time zone every calendar shows the time in its own zone. We write the zone including its DST rules into the file, so 10:00 stays 10:00 in that zone everywhere, even for series that cross a clock change.
Does Outlook take over the recurrence from the link?
No, the Outlook link doesn't support recurrence. Use the ICS file or the Google link for series.

Done with exporting and importing?

An ICS file is a snapshot. Kalender Sync keeps Google, Outlook, iCloud and more in sync continuously, GDPR-compliant and hosted in Germany.

Start for free

Currently supported providers

GoogleMicrosoftApple iCloudKKSuiteGMXWEB.DEmailbox.orgiCal-Feeds