date formulas

  • Thread starter Thread starter Kathleen
  • Start date Start date
K

Kathleen

Hi, I have two problems that need help.

Cell A1 has a date of birth. Cell A2 calculates the age. If there isn't a
dob of birth, cell A2 returns 110.

Another one is having cell C1 with a date or NA. C2 is based on cell C1 and
adds 3 months to the date in C1 but if C1 has NA, the return is #value!.

Kathleen
 
Describing the problem is only the first step, Kathleen. You also need to
identify the solution you are looking for.

As a guess, for #1 try,
=if(a1="","",datedif(a1,today(),"y"))

For #2,
=if(c1="NA","",date(year(c1),month(c1)+3,day(c1))

Regards,
Fred
 
Hi Fred, Sorry about that...and thank you for trying. I'm using Exel 2003.

What I am trying to do is get the age or the return of na. AR5 has the date
of birth. AR1 has the formula to calculate the age based on the date of
birth.

AR5 = 07/29/1965
AR1 = 44

but if AR5 is blank, AR1 is returning 110. Is it possible to have a return
of na instead? Here's the formula I'm using =DATEDIF(AR5,NOW(),"y")


In problem two, I am using this formula in HA6 to add three months to a the
date in HA5. Problem is that HA5 could have a date or be marked NA. If HA5
is na, the return is #value!. Is it possible to have it return na?
=MIN(DATE(YEAR(HA5),MONTH(HA5)+3+{0,1},DAY(HA5)*{0,0}))
 
So my guess for #1 was correct. You want:
=if(ar5="","na",datedif(ar5,today(),"y"))

And my guess for #2 was correct. You want:
=if(ha5="na","na",date(year(ha5),month(ha5)+3,day(ha5))

Regards,
Fred
 
Fred your the best!! Thank you! This helps to make the file look a lot less
confusing to the users.
 
Hi,

The formula is working great but now I've hit another snag based on that
result. If AR3 is blank, then I can return NA, or in the case below 0.
Problem is that GC4 looks at AR3 to see if the number is greater/equal to 65.
But when AR3 is NA or 0, GC4 is returning YES, instead of no. I can
understand why GC4 wouldn't recognize NA but why won't it work if GC4 is 0?


=IF(AR3="","0",DATEDIF(AR3,TODAY(),"y"))

=IF(GC4:GC4>=65,"YES","NO")
 
I would prefer:
=IF(AR3="",0,DATEDIF(AR3,TODAY(),"y"))
as it's clearer what is wanted when AR3 is blank,
but both will work.

Regards,
Fred
 
Thank you!

Fred Smith said:
I would prefer:
=IF(AR3="",0,DATEDIF(AR3,TODAY(),"y"))
as it's clearer what is wanted when AR3 is blank,
but both will work.

Regards,
Fred



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