If you’ve ever found yourself endlessly repeating the same formulas or tasks in Excel, you’re not alone. We’ve all been there—copying, pasting, and tweaking formulas across workbooks, only to realize ...

DATEDIF(), which means Date + Dif, is a compatibility function left over from Lotus 1-2-3 that Microsoft adopted in Excel version 2000, which is the only version that explains how this function works.