If you have ever tried to compare two columns in excel just by looking at them, you already know it is a fast track to a massive headache and a lot of blurry vision. You start looking at row ten, your eyes skip to row twelve, and suddenly your whole report is a mess. If you want to compare two columns in excel and quickly find differences, duplicates, and unmatched data with easy step-by-step methods, you have to stop relying on your eyes and start relying on the tools to highlight matches