How to Show Week Numbers in Outlook Calendar on Windows 11

Week numbers in Outlook for Windows 11 show the week of the year (usually 1 to 52, and 53 in some years) right on your calendar grid. They help you track project deadlines and plan schedules across teams without counting dates by hand.

The feature is built into the new Outlook app for Windows 11. You turn it on in the calendar settings, and the numbers then appear in your monthly and weekly views. It only takes a few clicks.

Show or hide “Week numbers” in the Outlook calendar

To show week numbers, open the Outlook settings, go to the calendar options, and check the box that turns on week numbers. Outlook then shows the week of the year next to your dates, so you can plan over long periods without counting weeks on screen.

These steps are for the new Outlook app. Classic Outlook, the older desktop version, keeps this setting elsewhere (File › Options › Calendar), so the screens below will not match it.

Follow these steps.

1. Open the Start menu and go to Start › All apps › Outlook. Alternatively, type Outlook into the Start menu ⊞ search bar 🔍 and open the result.
2. Wait for the window to load. You should see your mailbox, with the navigation icons for Mail and Calendar on the left. If you are asked to sign in, use the account you normally use with Outlook.

3. Click the Settings button, the gear icon in the top right corner. The Settings window opens.

4. Select the Calendar tab in the left-hand sidebar of the Settings window. The calendar options appear on the right.
5. Find the View section.
6. Check the box next to Show week numbers. If you cannot find it, make sure you are in the new Outlook app and that the Calendar settings page is the one on screen.

The change applies right away, and you do not need to restart Outlook. To undo it, clear the checkbox and the numbers disappear. This is handy if the extra data feels cluttered.

Switch to the calendar and the week numbers now appear alongside your normal schedule, under Week numbers.

The configuration is complete.

Conclusion:

• Showing or hiding week numbers in the Outlook calendar helps with scheduling and planning, mainly when you work with people or teams across different time zones.
• Turning on Show week numbers keeps you aware of the current week of the year, which helps with organization and productivity.
• If week numbers are irrelevant or distracting, clear the same checkbox for a simpler calendar view.

You can show or hide week numbers again at any time with the same few clicks if you change your mind later.