How to Calculate Calendar Duration in Project - Microsoft Community


hi, 

i'm using ms project 2013 , need column calendar days project start.  there prior posting on site it, i've tried suggestions without success.  (ie; have used custom field formula suggested)

any suggestions appreciated.

thank you,

tim

tim,

i'm not sure suggestions tried work

text1=datediff("d",[project start],[start]) & " days"

attempting customize formula duration field (i.e. duration1) more complicated because duration fields pre-formatted display duration based on user's options setting definition of "day". default, "day" 8 hours. example, in simple plan shown in screen shot below project start date 1/2/17. both duration1 , text1 fields have been customized display calendar days project start. text1 field uses straighforward formula above. duration1 field needs following formula (assuming default definition "day"):

duration1=datediff("d",[project start],[start])*1440/3

why 1440/3 "fudge factor"? noted above duration1 field pre-formatted must re-formatted display want. there 1440 seconds in 24 hour "day" existing duration1 format needs first converted minutes. there 3 "8" hour periods in 24 hour "day" resulting value needs divided 3 such end result in calendar "days".

hope helps.

john



Office / Project / Windows 8 / Office 2013



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