Excel’s Date & Time functions ease the workload for bookkeepers, project planners, HR departments, and other jobs where time is money. The four functions covered here—ISOWEEKNUM, WEEKNUM ...

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 ...

A TechRepublic member wrote for advice on calculating the years, months, and days elapsed between two dates. This tutorial explains the solution provided by TechRepublic contributor Jeff Davis.

By default, Excel for the PC uses the 1900 date system, while its Mac counterpart uses the 1904 date system. In most cases, users won't notice this subtle difference.

This post will show you how to calculate the percentage difference between two numbers in Excel. using this formula you can find percentage difference easily.