Google has finally gotten their act together and have added a pretty easy way to add official week numbers, if you know where to look. You have to go to a place called "Interesting Calendars." To get there, press the dropdown button () in the box called "Other calendars", then press "Browse Interesting Calendars," then go to the tab called "More" and subscribe to the calendar called "Week Numbers." In my test it appears that it adds the same calendar regardless of what language you use, and the week numbers are always displayed on Mondays. Google's week numbers look like this: .
If you still want to use my custom calendar, continue reading...
To add my week numbers, simply use this box:
Here is an image showing how it will look when you have added the calendar.
Pretty neat, right? I hope these week numbers will make your life easier. I have hosted this calendar since 2006 and it currently contains week numbers throughout 2020.
You can remove the week numbers just as you would any other calendar. Simply go to your settings and press "Unsubscribe". If you just want to turn them off for a while, you can simply press the calendar called "Week Numbers" in your calendar list and the week numbers will disappear until you press it again.
Due to the fact that some countries number weeks a little differently, I encourage you to verify that my week numbers are correct in your country. Pick up a local calendar and make sure the week numbers match. Note that traditional paper calendars often make mistakes with week 53, where they usually label it as week 1. But if you look at the calendar for the next year, the error should be fixed.
Your mileage may vary.
Use this third party website to generate custom week numbers for your own use: http://optics.eee.nottingham.ac.uk/matt/weeknumbers/weeknumbers_form.php
If the button on the top of the page didn't work, then you can try this link:
Google Apps users can make a direct link to add the week numbers to their domain. Simply edit these links to your domain name:
Just remember to replace example.com with your domain!
Get the source code here: https://gist.github.com/stefansundin/8413812