In opportunity reports, the Age of an open opportunity is the number of days since the opportunity was created. For closed opportunities, Age is the number of days between the creation date and the closed date.

In case reports, the Age of an open case is the elapsed time from creation to the present. The Age of a closed case is the elapsed time from creation to the closing time of the case. You can choose to view the Age of a case in days, hours, or minutes.