When you enter a number into an Excel cell that looks like a date, such as "Jun-1" or "6/1," Excel automatically adjusts the format of the cell to display a date, so you may not know that Excel ...

I traded the static results of Flash Fill for dynamic formulas that update automatically.

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.

Excel percentage formulas can get you through problems large and small every day—from determining sales tax (and tips) to calculating increases and decreases. We’ll walk through several examples below ...