One calendar out of many

Share one calendar without sharing every account.

Combine calendars from different sources into a single one. For yourself, for family, for your team – no account, no app.

Everything in one view

Merge calendars from Nextcloud, GWDG Exchange or any other ICS link into a single feed.

You decide who sees what

For every person, choose whether they see event details, only "busy", or nothing at all.

No sign-up

No registration, no ads. Just one link and one password – to keep in your own safe place.

Create a new calendar

Ready in a minute. You get a personal link and a password to store safely afterwards.

Open an existing calendar

Already have an edit link? Paste it here to unlock your calendar.

Frequently asked

What happens with my calendar data?

Calendar addresses and credentials are stored encrypted (AES-256-GCM). Calendar contents are only briefly cached and refreshed from your source regularly.

Do I have to register?

No. When you create your calendar you receive a secret link and an auto-generated password. Both together are enough to edit your calendar – as long as you keep them safe.

Which providers are supported?

Nextcloud, GWDG Exchange (via DavMail), plus any publicly reachable or password-protected ICS/Webcal/CalDAV link.

How much does it cost?

Nothing. calmerge is run privately and free of charge. If you like, you can support the operator via the contact details in the imprint.