Formulas are powerful tools for performing calculations and analyzing data in Excel. In this beginner’s guide, you’ll learn how to use formulas and explore some popular built-in functions.

With the help of a simple function, Excel's Conditional Formatting feature can save you time and effort. Here's an easy way to flag formulas in your worksheets.

Functions are preconfigured formulas used in Microsoft Excel and Apple Numbers. Apple Numbers was updated in 2009, which increased the total number of functions available. Apple Numbers 2009 has ...

This free to download (till 2/18) eBook makes it easier than ever to get everything out of this powerful data tool. Become a pro at the spreadsheet and data analysis tool from Microsoft.

Excel found a problem with one or more formula references in this worksheet. Check that the cell references, range names, defined names, and links to other workbooks in your formulas are all correct.