How to use a DAYS function in Excel In this tutorial, we will find the number of days between the dates in the month. Click the cell where you want to see the result, then type =DAYS (A3, B3).

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 ...