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

Ever wondered why your Excel formulas sometimes produce unexpected results? It might be due to the order in which Excel performs calculations. This order is defined by the acronym PEMDAS.

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.

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.

Learn about the weighted average cost of capital (WACC) formula in Excel and use it to estimate the average cost of raising funds through debt and equity.

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.