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Alteryx Designer Desktop Discussions

Find answers, ask questions, and share expertise about Alteryx Designer Desktop and Intelligence Suite.

Convert dates to last day of given month

7 - Meteor

Hello. I have a column containing various dates, all of which are the first day of the month. For example, I have dates such as 2023-01-01, 2026-01-01, 2025-04-01, etc. I would like to convert these dates to the final day of their given months - ie, 2023-01-01 would become 2023-01-31. What is the best way of accomplishing this? I am working on Designer x64. Thank you. 

12 - Quasar

Hi @jamesbodolay ,

I would add one month to my date, then subtract one date from that. So, for the '2023-01-01' example you'd add one month, resulting in the date '2023-02-01'. Subtracting one day from that will then get you '2023-01-31'


This formula should do the trick:

9 - Comet

Hi @jamesbodolay ..


You can also use this formula:


ToDate(DateTimeTrim([Date], 'lastofmonth'))



Last of Month.png