WEEKNUM Problems


New Member
Feb 15, 2019
Hello Forumers!

I hope this message finds you well. I am currently trying to solve a problem with the WEEKNUM formula...
I need to convert specific dates to week numbers (as the formula works) however, I am wondering if it is possible to edit the formula or add in more items to it so that it starts counting from a specified date...

For instance, the 3rd of December of 2018 is counted as week 49... But can I have it count as Week 5 if I need it by editing the formula? (Other than subtracting 44 from it)?

The main problem with this is that when I go to January 2019, it starts counting from 1 again... Is there a way to make the dates I have for January count as Week 53 and Week 54 etc?

Thanks for this!

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Eric W

MrExcel MVP
Aug 18, 2015
Welcome to the Board.

You could create your own weeknum formula:

1Start dateCurrent Date#weeks

<colgroup><col style="width: 25pxpx"><col><col><col><col></colgroup><thead>

Worksheet Formulas



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