All businesses need to calculate dates and times for payroll, expenses, inventory and more. We show how Excel turns dates into serial numbers for easier calculations, and we discuss Networkdays ...

If Microsoft Excel does not recognize dates, then there is something wrong with the formatting. Use any of the methods mentioned here to format cells perfectly.

It's easy to change the date format in Microsoft Excel. You just need to use the "Date" drop-down menu, which gives you plenty of options.