Excel Formula

Experts - I am going mad and confused with the below formula.

Basically i have 6 dates in excel as columns. Each of these are some milestone dates. Date 1 cannot be blank. and if Date 2 is blank, subsequent dates also will be blank.

I need to find the sum of each dates & add it as total sum.

Ex:
1. If date2 is blank, then display blank as result.
2. If date3 is blank, then display date2 - date1 as result
3. If date4 is blank, then display (date2-date1) + (date3-date2)
4. If date5 is blank, then display (date2-date1) + (date3-date2) + (date4-date3)
5. If date6 is blank, then display (date2-date1) + (date3-date2) + (date4-date3) + (date5-date4)
6. if no blank in any dates, then display (date2-date1) + (date3-date2) + (date4-date3) + (date5-date4) + (date6-date5).

Kindly help
EE.xlsx
LVL 7
ManjuIT - Project ManagerAsked:
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Roy CoxGroup Finance ManagerCommented:
How do you expect to sum dates? What result are you expecting?
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Subodh Tiwari (Neeraj)Excel & VBA ExpertCommented:
What about this?

In H7
=SUMPRODUCT((C7:G7<>"")*(C7:G7-B7:F7))

Open in new window

and then copy it down.
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ManjuIT - Project ManagerAuthor Commented:
Expected result added now.
EE.xlsx
0
 
ManjuIT - Project ManagerAuthor Commented:
@subhodh - perfect. thank you
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Subodh Tiwari (Neeraj)Excel & VBA ExpertCommented:
You're welcome Manju!
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