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edited 12/09/19 in Archived 2017 Posts

I cannot for the life of me figure out why the NETDAYS formula is not working for me.

Let's say I have my start date as 6/30/17 in cell 6 under column 2 and that my finish date as 7/26/17 is in cell 6 under column 4.

I select the appropriate cells for start_date and finish_date and my formula reads =NETDAYS([Column2]6,[Column4]6)

The return is #INVALID DATA TYPE. 




  • Mike Wilday
    Mike Wilday ✭✭✭✭✭✭

    Make sure the columns you are pulling from are set as "Date" column type. Also, there may be issues if you are referencing a linked date cell. Linked Date cells do not seem to calculate as dates even though they are linked from a Date Column and are in a Date Column. This appears to be a bug - If that is your issue. Please report it. 

  • Ah, I was looking to see if I could format just the cells as dates, didn't know it had to be done at the column. Thank you for your wisdom.

  • Mike Wilday
    Mike Wilday ✭✭✭✭✭✭

    Sure thing. Check out this post which details the various formulas available in Smartsheets and each of their requirements: https://help.smartsheet.com/articles/775363-using-formulas#netdays

    Also, this posts highlighting the formula errors is really good for troubleshooting errors you get in Smartsheets. https://help.smartsheet.com/articles/2476176-formula-error-messages

    I keep both of these links handy.


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