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# Date calculation between two dates

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I’m try to calculate the # of days between dates and my formula is: IFERROR(DATEDIF(A2,B2, “d”),0) . This works partially, but when end is blank I get zero, which correct. I want modify formula to use today if end date is blank to return a value .
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Finance Analyst
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Commented:
Try:

=IFERROR(DATEDIF(A2,IF(B2="",TODAY(),B2),"d"),0)
Finance Analyst
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Commented:
Or if there's a chance that end date could be zero rather than blank:

=IFERROR(DATEDIF(A2,IF(OR(B2="",B2=0),TODAY(),B2),"d"),0)

Commented:
Cells remain blank with this formula. Also remains blank when start is greater than end date
Finance Analyst
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Can you upload a file with some sample dates for all of the expected scenarios?
Group Finance Manager
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Commented:
You don't want to use IFERROR until you know that the formula is correct.

Try this

=DATEDIF(A2,IF(ISBLANK(B2),TODAY(),B2),"D")
DATEDIF.xlsx

Commented:
They second formula with zeros worked.  I'm on a closed network and can't upload files. But here are examples for my second issue:
Start.    End
10/12/15.  11/16/15
11/23/14.   11/17/14
Finance Analyst
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This problem has been solved!
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Commented:
Complete Solution
Finance Analyst
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Commented:
Thanks for the feedback, glad to help.
Finance Analyst
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Commented:
Also, a side point, why are you using DATEDIF for number of days, you will get same result with simple formula for "End Date minus Start Date", ie =B2-A2

To allow for the blanks etc:

=IFERROR(IF(OR(B2="",B2=0),TODAY(),B2)-A2,0)