Days count between 2 dates if one is blank

[Gaurav_84]

Hi Expert,

can you help me with my dex formula. I want to count number of days between 2 dates (open date & closed date). But in some scenario closed date is blank. 

Regards

[umanbr]

Try this if you want to display blanks for no close dates.

no of days=IF(ISBLANK(closed date),BLANK(),DATEDIFF(open date,close date,DAY))