I am working on building a calculated field using 3 date columns on a list and I am having difficulties due to being 3 dates and If/Else. Basically it should calculate a date based on if date1 is not null add 90 days, else (if date 1 is null) use date 2 plus 90 days, else (if date 2 is null) use date3 plus 90 days.

This is what I have so far. I may be completely wrong. Any help is appreciated.


1 Answer 1


Use below formula for your calculated field:

=IF(ISBLANK([DATE1]), IF(ISBLANK([DATE2]), IF(ISBLANK([DATE3]), "", [DATE3]+90), [DATE2]+90), [DATE1]+90)


  1. Sometimes comma(,) does not work in formula (I am not sure but it is based on something language or regional settings on your site). So in that case use semicolon(;) instead of comma(,).

Official Documentations:

  1. Calculated Field Formulas.
  2. IF function.
  • Hi Ganesh, appreciate your help. I am still unable to make this work. I am working with SharePoint 2013 and still getting this error "The formula contains a syntax error or is not supported. I tried your example and adding two closing parenthesis to the end and both ways it failed. Any thoughts?
    – Cristian
    Mar 25, 2021 at 20:25
  • What is the language/regional settings on your site? Can you please try replacing , by ; Mar 26, 2021 at 3:42
  • I did try the function with (;) instead of (,) and it didn't work. I have created other functions using (,) and they have worked so I'm sure commas work.
    – Cristian
    Mar 30, 2021 at 17:30

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