Learn how to highlight dates before today and a specific date with and without using the Today() function in Microsoft Excel.

Excel for the web now supports conditional formatting, and the interface is easier to use than the desktop edition. Susan Harkins shows you how to use it.

Avoid frustration and unintended formatting by learning how Excel applies conditional formatting rules.

Susan Harkins shows you how to visually identify invalid dates using Excel's conditional formatting feature.

Excel's conditional formatting lets you formats cells based on the value of those cells or their formulas. Learn the basics of this amazing feature.

However, you can also use conditional formatting to compare two columns in Excel. Here's how: Open the Excel spreadsheet containing the columns you want to compare.