How to display calendar weeks in Outlook

Numbering calendar weeks according to a 52-week year is normal within business contexts. With Outlook, it’s possible to display calendar weeks, however, the corresponding feature is deactivated by default. We’ll show you how to display calendar weeks in Outlook so that you have a better overview of the calendar year.

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How to display calendar weeks in Outlook quick guide

  1. Go to File > Options.
  2. Select the Calendar menu item in the right-hand sidebar.
  3. Scroll down to the Display options section and tick the Show week numbers in the month view and in the Date Navigator box.

How to display calendar weeks in the Outlook desktop app

Follow these steps to display the calendar week in the Outlook desktop app:

Step 1: Open Outlook.

Step 2: Go to the File tab in the menu bar.

Outlook menu
The Outlook desktop application combines an email client with a calendar, address book and task tools. You can use the File tab to manage your Outlook account.

Step 3: Select Options in the left sidebar to open the Outlook options in a new window.

Outlook: The File tab
In the File tab, you’ll find account information for your Microsoft Office product as well as the Outlook desktop app settings.

Step 4: Select the menu item Calendar in the left sidebar to access your email program’s calendar settings.

Step 5: Scroll down to the Display options section.

Step 6: Tick Show week numbers in the month view and in the Date Navigator.

Outlook options: Calendar settings
Outlook calendar settings

Step 7: Confirm the changes by clicking OK. Calendar weeks will now be displayed in the month view to the left of your Outlook calendar.

Outlook calendar view
Outlook calendar view with calendar weeks displayed
Note

The instructions shown here are suitable for Microsoft 365 Outlook versions, Outlook 2021, 2019 and 2016. If you are using an older version of Outlook, you can access the calendar week feature by navigating to Calendar Options (Tools > Options > Settings > Calendar Options).

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How to display calendar weeks in Outlook on the web

To display week numbers in the Outlook on the web calendar, follow these steps:

Step 1: Open Outlook on the web in your web browser and then open your calendar.

Step 2: Click the cog icon in the menu bar.

Outlook web calendar settings menu
Online calendar settings

Step 3: Click on the menu item Calendar. Under Calendar appearance, tick the Show week numbers box.

Outlook web calendar settings
Click ‘Calendar appearance’ to determine how the calendar is displayed.

Step 4: Save your changes by clicking on OK. The monthly view of your calendar will now be displayed with numbered weeks.

Outlook web calendar with week numbering
Outlook web calendar view with the calendar week displayed
Note

Keep in mind that different numbering systems for calendar weeks are used internationally. Not every country designates the first week of the calendar year as the week in which January 1 falls. In Outlook’s calendar settings, you can adjust the setting for the first week in the Work hours section.

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