Excel’s Date & Time functions ease the workload for bookkeepers, project planners, HR departments, and other jobs where time is money. The four functions covered here—ISOWEEKNUM, WEEKNUM ...

So, if Excel does not recognize the date format, using the DATEVALUE function, just enter the formula =DATEVALUE (A1) in the formula field and refer to the cell containing the date that Excel ...

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 it.

How to Make a Cell on Microsoft Excel With a Changing Date. Microsoft Excel offers a Function Library with formulas that insert the current date when you open the worksheet or enter calculations.

If numbers keep changing to dates automatically in Excel or if Excel changes dates to random numbers then this post will help you fix the issue.

Microsoft Excel 2010 has 400 functions in 11 categories. Categories for both spreadsheet programs include Date and Time, Text, Statistical, Financial and Engineering.