This article looks at how to use Excel’s auditing tools to audit formulas and ensure the accuracy of data.

Percentages aren't always easy to calculate, but one of the best tools in Excel's toolbox is calculating percentages for you. Here's how to do it.

Bonus tip: With basic formulas, the AutoSum button is the top choice. It’s faster to click AutoSum>SUM (notice that Excel highlights the range for you) and press Enter.

Use INDEX and MATCH for simple database queries in Excel The bigger your spreadsheet, the more you need these, which you can combine with SUM, AVERAGE, and MAX to refine your searches.