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Duration is not calculating correctly when using hours duration

Some parent rows have 0 days as the summationof the assocaited child rows and and some have arbitrary number of days.  Since it is in a rollup value from child rows I cannot change.  Any suggestions? 


  • Parent rows will automatically show the full duration of all the child rows - this is NOT a SUM of child row durations. The parent row duration is calculated by the time between the parent row start and end dates, which are rolled up from child rows. 

  • Is there a way to calculate the duration of child durations only (exact level of effort)?

  • Parent rows will automatically show the full duration of a set of tasks. If you would like to SUM child row durations, use this formula (not in your Duration column):




    Replace the "Cell1" reference with the parent row Duration column cell.

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