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Calculating the difference between two dates in Years, Months, and Days

Hi Community,

I am working on a report where I have to calculate the difference between two dates (a specific date, and today) then show the resulat in the following format 00years - 00months - 00days

Example:

Date1 - Today()

Date2 - 08/19/2020

Result to show => 1 year, 9 months and 19 days

Currently I am using the DATEDIF function inside Excel then importing the result in my Power BI report, but everyday I have to open the exel file in order to get the new update then refresh my report in Power BI.

Please is there any DAX fomula that can show the date difference in the above format.

Thanks.

Best regards.

1 ACCEPTED SOLUTION

Accepted Solutions
Super User

Re: Calculating the difference between two dates in Years, Months, and Days

@othy_bi Oh !! Ok, please try this (Just added two more conditions in the SWITCH statement)

Hopefully, this should fix all your test cases :-) Fingers Crossed !!

```Final =
VAR _Years = FLOOR(YEARFRAC([Date1],[Date2],4),1)
VAR _Months = FLOOR(MOD(YEARFRAC([Date1],[Date2],4),1) * 12.0,1)
VAR _daysinMonth = DAY(EOMONTH([Date1],0))
VAR _days = IF(DAY([Date1])<DAY([Date2]),DAY([Date2])-DAY([Date1]),DAY([Date2])+(_daysinMonth-DAY([Date1])))
VAR _daysFinal =  SWITCH(TRUE(),DAY(EOMONTH([Date1],0)) = _days || DAY(EOMONTH([Date2],0)) = _days,0,_days)

RETURN SWITCH(TRUE(),
_Years>0 && _Months = 0 && _daysFinal = 0,_Years & " year(s)",
_Years>0 && _Months>0 && _daysFinal = 0, _Years & " year(s), " & _Months & " month(s) ",
_Years>0 && _Months >0 && _daysFinal >0, _Years & " year(s), " & _Months & " month(s) " & _daysFinal & " day(s)",
_Years>0 && _Months = 0 && _daysFinal >0, _Years & " year(s), " & _daysFinal & " day(s)",
_Months>0 && _daysFinal = 0, _Months & " month(s) ",
_Months>0 && _daysFinal >0, _Months & " month(s) " & _daysFinal & " day(s)",
_daysFinal & " day(s)"
)```

Did I answer your question? Mark my post as a solution !

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13 REPLIES 13
Super User

Re: Calculating the difference between two dates in Years, Months, and Days

This measure will do it for that case, might need some testing for other use cases:

Note, for this measure, I created a Date1=TODAY() measure and a Date2=DATE(2020,8,19) measure.

```Measure 4 =
VAR __daysinMonth = DAY(EOMONTH([Date1],0))
VAR __years = DATEDIFF([Date1],[Date2],YEAR) - 1
VAR __months = IF(MONTH([Date1])<MONTH([Date2]),MONTH([Date2])-MONTH([Date1]),12-MONTH([Date1])+MONTH([Date2])-1)
VAR __days = IF(DAY([Date1])<DAY([Date2]),DAY([Date2])-DAY([Date1]),DAY([Date2])+(__daysinMonth-DAY([Date1])))
RETURN __years & " year, " & __months & " months and " & __days & " days"```

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Regular Visitor

Re: Calculating the difference between two dates in Years, Months, and Days

Thank you for your reply, the formula you shared returns the format I was looking for, but when I try to calculate the difference between two dates (date1=(2020;5;1) date2=(2020;5;2)) where the the difference is only 1 day the returned result is totally different  -1 year, 11 months and 1 days.

Super User

Re: Calculating the difference between two dates in Years, Months, and Days

@othy_bi - Yeah, I figured that would be the case. It's going to take some tweaking. I'll take a look when I have some time. It's an interesting problem.

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Regular Visitor

Re: Calculating the difference between two dates in Years, Months, and Days

I made some researches in the meanwhile but still can't find the right formula.

Hoping you can help me community

Super User

Re: Calculating the difference between two dates in Years, Months, and Days

@othy_bi A little tweaking to the @Greg_Deckler formula will work for you...

```DateDiff =
VAR __daysinMonth = DAY(EOMONTH([Date1],0))
VAR __years = DATEDIFF([Date1],[Date2],YEAR) -1
VAR __months = IF(MONTH([Date1])<=MONTH([Date2]),MONTH([Date2])-MONTH([Date1]),12-MONTH([Date1])+MONTH([Date2])-1)
VAR __days = IF(DAY([Date1])<DAY([Date2]),DAY([Date2])-DAY([Date1]),DAY([Date2])+(__daysinMonth-DAY([Date1])))
VAR __Final = SWITCH(TRUE(),
__years>0,__years & " year(s), " & __months & " month(s) and " & __days & " day(s)",
__months>0,__months & " month(s) and " & __days & " day(s)",
__days & " day(s)")
RETURN __Final```

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Regular Visitor

Re: Calculating the difference between two dates in Years, Months, and Days

I am facing a new issue when using the updated fomula, when the exact difference between both dates is one (1) Year the formula returns 30days

Super User

Re: Calculating the difference between two dates in Years, Months, and Days

@othy_bi Please try this... Hopefully this should handle all cases...

```DateDiff = VAR __daysinMonth = DAY(EOMONTH([Date1],0))VAR __years = DATEDIFF([Date1],[Date2],YEAR) VAR __months = IF(MONTH([Date1])<=MONTH([Date2]),MONTH([Date2])-MONTH([Date1]),12-MONTH([Date1])+MONTH([Date2])-1)VAR __days = IF(DAY([Date1])<DAY([Date2]),DAY([Date2])-DAY([Date1]),DAY([Date2])+(__daysinMonth-DAY([Date1])))VAR __Final = SWITCH(TRUE(), __years>0 && __months = 0,__years & " year(s)", DAY(Test68DateDiffInWords[Date1])=DAY(Test68DateDiffInWords[Date2]),__months & " month(s)", __years>0 && __months>0 && __days>0,__years & " year(s), " & __months & " month(s) and " & __days & " day(s)", __months>0,__months & " month(s) and " & __days & " day(s)", __days & " day(s)" )RETURN __Final
```

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Regular Visitor

Re: Calculating the difference between two dates in Years, Months, and Days

I had a limited internet acces recently.

I used the updated fomula you have suggested, but still getting wrong results

1/ 12 Nov 2018 - 11 Dec 2018 => 29 days

2/ 12 Nov 2018 - 01 Dec 2018 => 19 days

3/ 12 Nov 2018 - 01 Nov 2019 => 354 days which is even less than 1 year

Super User

Re: Calculating the difference between two dates in Years, Months, and Days

@othy_bi Hmm

Please try this and let me know how it goes with your testing...

```DateDiff =
VAR _Years = FLOOR(YEARFRAC([Date1],[Date2],4),1)
VAR _Months = FLOOR(MOD(YEARFRAC([Date1],[Date2],4),1) * 12.0,1)
VAR _daysinMonth = DAY(EOMONTH([Date1],0))
VAR _days = IF(DAY([Date1])<DAY([Date2]),DAY([Date2])-DAY([Date1]),DAY([Date2])+(_daysinMonth-DAY([Date1])))
VAR _daysFinal =  SWITCH(TRUE(),DAY(EOMONTH([Date1],0)) = _days || DAY(EOMONTH([Date2],0)) = _days,0,_days)

RETURN SWITCH(TRUE(),
_Years>0 && _Months = 0 && _daysFinal = 0,_Years & " year(s)",
_Years>0 && _Months >0 && _daysFinal >0,_Years & " year(s), " & _Months & " month(s) " & _daysFinal & " day(s)",
_Months>0 && _daysFinal = 0, _Months & " month(s) ",
_Months>0 && _daysFinal >0, _Months & " month(s) " & _daysFinal & " day(s)",
_daysFinal & " day(s)"
)```

Did I answer your question? Mark my post as a solution !

Proud to be a Datanaut !