How it works

Two clicks to connect, then your Outlook calendar appears in Google Calendar and stays there, updated in real time.

1. Connect

On the home page press Microsoft and sign in to the Outlook account whose calendar you want to see in Google. Then press Google and choose the Google account that should receive it. There is no sign-up form and no password to invent: the Microsoft sign-in is your identity, and it is how you get back to your settings from any other browser.

Microsoft is asked only to read your calendar. Google is asked for calendar access so that a calendar named Outlook can be created in your account and kept up to date.

2. In real time

Once both accounts are connected, calendarnexus watches your Outlook calendar, the next 90 days and the last 7, and writes every change into your Google Outlook calendar as it happens. Only the differences are written: an unchanged calendar costs nothing to check, so a quiet week is a quiet week. Exactly how often it looks is in the FAQ.

Recurring meetings are expanded into their individual occurrences, so an exception in a series (a moved or cancelled instance) is copied correctly.

3. What gets copied

Attendees are deliberately not copied, so nobody receives a second invitation from Google. Attachments and reminders are not copied either.

4. One way, by design

Outlook is the source of truth for the copy in Google. Changes you make in Outlook appear in Google in real time, and deletions in Outlook disappear from the Google Outlook calendar just as quickly. Nothing flows back into Outlook unless you turn on two-way (below), and even then your own events are never edited.

Because the Outlook calendar in Google is managed for you, anything you add to it by hand will be removed on the next run. Keep your own events in your other Google calendars.

5. The first run on a big calendar

The first sync of a very full calendar may take a few minutes to finish, and the home page tells you how many events are left. After that every update is tiny.

6. Two-way, if you want it

Once the first sync has run, the home page offers Make sync bi-directional. Microsoft asks you once to allow writing to your calendar, and from then on your Google calendar is mirrored into your Outlook calendar as well: private events with no reminders, marked busy or free as they are in Google, so colleagues see you as busy without seeing why. It is the same kind of copy in the other direction, managed in the same way, and it can be switched off again with one click, which removes the copies.

What it is not

It is not a scheduling tool or a calendar app. It does one thing: it keeps a faithful copy of your Outlook calendar inside Google Calendar, which is what an ICS subscription promises and fails to deliver.

Connect your calendars

30 days free, then from 70p a month. Pricing · What is stored