I am trying to create an Excel formula that will display someone's age in units of days, weeks, months, or years, depending on how old they were at the time of a test. To clarify...
I have tried several functions for this, all using the DATEDIF function. For each, I have returned the #NAME? error. Please see below
KEY :
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=IFS((E600-F600)<7,DATEDIF(F600,E600,”d”)&” d/o”,AND((E600-F600)>7,(E600-F600)<60),(DATEDIF(F600,E600,”d”)/7)&” w/o”,AND((E600-F600)>60,(E600-F600)<730),DATEDIF(F600,E600,”m”)&” m/o”,(E600-F600)>730,DATEDIF(F600,E600,”y”)&” y/o”)
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=IFS(DATEDIF(F600,E600,”d”)<=6,DATEDIF(F600,E600,”d”)&” d/o”,AND(DATEDIF(F600,E600,”d”)<=59,DATEDIF(F600,E600,”d”)>=7),DATEDIF(F600,E600,”d”)/7&” w/o”,AND(DATEDIF(F600,E600,”d”)>=60,DATEDIF(F600,E600,”m”)<=24),DATEDIF(F600,E600,”m”)&” m/o”,DATEDIF(F600,E600,”m”)>25,DATEDIF(F600,E600,”y”)&” y/o”)
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=DATEDIF(F600,E600,IFS((E600-F600)<7,”d”&” d/o”,AND((E600-F600)>7,(E600-F600)<60),”d”/7&” w/o”,AND((E600-F600)>60,(E600-F600)<730),”m”&” m/o”,(E600-F600)>730,”y”&” y/o”))
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Any help on this would be greatly appreciated!
=LOOKUP(E600-F600,{0,8,56,730},INT(DATEDIF(F600,E600,{"d","d","m","y"})/{1,7,1,1})&" "&{"d","w","m","y"}&"/o")
though your listed criteria state only "if younger than", "if older than", so it's not clear in which category someone who, for example, is precisely 7 days old should lie.
@Jos Woolley's example worked great. Another solution is posted below if anyone is troubleshooting their own formula in the future.
=IF(E600 < F600 + 7, DATEDIF(F600, E600, "d") & " d/o", IF(AND(E600 >= F600 + 7, E600 <= EDATE(F600, 2)), ROUNDDOWN(DATEDIF(F600, E600, "d") / 7, 0) & " w/o", IF(AND(E600 >= EDATE(F600, 2), E600 <= EDATE(F600, 24)), DATEDIF(F600, E600, "m") & " m/o", DATEDIF(F600, E600, "y") & " y/o")))
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