How to count inventory used per day in Gantt chart


I have a Gantt chart that has inventory requests by location. I am trying to find a way to use the COUNTIFS function to count how much inventory is out on location on any given day.

What is the best way to do this?

I have been trying to use the Sheet Summary but not having much luck.

Thank you!



  • Paul Newcome
    Paul Newcome ✭✭✭✭✭✭

    Do you have a specific date in mind (such as TODAY) or are you wanting to calculate this some different way?

  • Hi Paul,

    Thanks for responding.

    I want to be able to plan for the future, so ideally be able to choose any date and see how much inventory (RB - Amount) I have essentially being used that date on site so I can confirm I have enough.

    This sheet has current requests and future requests. As below

    Thank you!

  • Paul Newcome
    Paul Newcome ✭✭✭✭✭✭

    Ok. I would have a Sheet Summary Field called "Date Choice" where you can select the date you want to check.

    Then the formula to get the total for that date you would use:

    =SUMIFS([RB - Amount]:[RB - Amount], [Date Needed On Site]:[Date Needed On Site], @cell = [Date Choice]#)

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