How to calculate number of days between two date fields

[g_hill]

Hello,

I'm trying to set up a new measure to calculate number of days between two date fields in the same table. I've tried using the DATESBETWEEN DAX function but it doesn't work for me.

The start date field is called Close Date and the end date is called Let Date. They're both in a table called CBLShortlists. I've tried the following but it doesn't recognise the field names:

Days to Let = DATESBETWEEN(CBLShortlists,Close Date,Let Date)

Can anyone suggest a way to work this out?

Thanks in advance

[Samarth_18 · Accepted solution]

Hi @g_hill 

You can try below code:-

Days to Let = DATEDIFF(Close Date,Let Date,day)

Thanks,

Samarth

[AlexisOlson]

This is the way. You can just subtract days (i.e. LetDate - CloseDate) since they are stored as the number of days since 12/30/1899 but DATEDIFF is more flexible and can easily handle other units too (SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, YEAR).

@g_hill The DATESBETWEEN function is for Time Intelligence and returns a table of date values between two dates rather than a single number. It's generally used for filtering.