Conditional formatting enables you to apply special formatting to cells in your spreadsheet that meet certain criteria. Excel has a sizable library of preset conditions that you can apply fairly simply, or you can create your own conditional formatting rules using Excel formulas. This guide will provide in-depth step-by-step examples of the most popular conditional formatting functions for basic and advanced users in Excel 2016. Then, we'll show you how to perform the same functions in another spreadsheet application, Smartsheet.