Extract month and year and get the number of months in Power Query

[Anonymous]

Hello Experts!

I have Start Date and End Date as columns and I want to get number of months between the dates. But I will not be able to use  formula: 

Number.Round(Number.From(([ENDDATE] - [STARTDATE])/( 365.25 / 12 )) ,0 ) +1

Reason is, I want to take the whole month despite of the date. As an example. 

STARTDATE	ENDDATE	Number of months
2/1/2022	2/1/2023	13
7/15/2022	3/15/2023	9
10/15/2021	11/30/2021	2
6/30/2022	9/30/2022	4
3/1/2023	4/30/2025	26

How can I arrive this in Power Query? Basically, I want to extract the month of each date and subtract and add one. But this is impossibe when years are different. Please help!

[v-stephen-msft]

Hi @Anonymous ,

Could you tell me if your problem has been solved?
If it is, kindly Accept it as the solution. More people will benefit from it.
Or you are still confused about it, please provide me with more details about your problem.

Best Regards,
Stephen Tao

[ronrsnfld]

Power Quer

=(Date.Year([ENDDATE]) -Date.Year([STARTDATE]))*12 + (Date.Month([ENDDATE])-Date.Month([STARTDATE]))+1

or, if you are using Power BI, you could use:

DAX

Number of Months = DATEDIFF([STARTDATE],[ENDDATE],MONTH)+1

[Vijay_A_Verma · Accepted solution]

I think following formula would work as you want to take complete month

= Number.RoundUp(Duration.Days(Date.EndOfMonth([ENDDATE])-[STARTDATE])/(365.25/12))

OR

= Number.RoundUp(Duration.Days(Date.EndOfMonth([ENDDATE])-Date.StartOfMonth([STARTDATE]))/(365.25/12))