Functions are the driving force of any Microsoft Excel spreadsheet, generating a single value or an array of results based on ...

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 ...

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 ...

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 ...