Updated
How to Show the Week Number in the Mac Menu Bar
With Week Number
- Open Week Number. The week number is in the menu bar.
- To show a shorter text, like “W43”, open the settings, and change “Prefix text”.
Click the week number, and choose “Copy Week Number” to copy it, or “Find Week Number” to see the week number of another date. Week Number also has a widget.
Week Number uses the week numbering of your Mac. If you expect another week number, like in the last days of December, your Mac may use another rule than the ISO 8601 week numbers. How to use ISO 8601 week numbers.
With Dato
Dato shows the week number together with the date and the time, and a calendar with your events when you click it. To show the week number in the menu bar, go to “Menu Bar” in the Dato settings, and turn on “Week number”. You can also change its format there.

Get Week Number
The current week number in your menu bar
Free
- Platform
- macOS
- Requires
- macOS 26 or later
- Category
- Utilities
- Released
- May 2024
- Privacy
- No data collected
- Developer
- Sindre Sorhus
Without an app
The Calendar app can show the week numbers in its calendar:
- Open the Calendar app, and choose “Calendar › Settings”.
- Click “Advanced”, and turn on “Show week numbers”.
This is good when you sometimes need the week number of a date. To always see the current week, you must have it in the menu bar, and macOS cannot show it there.
