The Excel ISBLANK function returns TRUE if cell value is blank and False if the cell is not blank, and it is also an information function.

Excel's data validation feature is more versatile than you might think. Learn how to use literal values, input values, list values, and even formulas to restrict input date values using data ...

DATEDIF (), which means Date + Dif, is a compatibility function left over from Lotus 1-2-3 that Microsoft adopted in Excel version 2000. It's fallen off current Excel menus, but you can still use ...

We delve into the Excel Date & Time functions EDATE, YEARFRAC, EOMONTH, and NETWORKDAYS.INT. All are handy for going back and forth in time on retirement dates, expiration dates and more.