Financial models, reports, and analysis are only as good as the clean data in Excel used. If you have incorrect, invalid, and inconsistent data, then valuations and decisions are in jeopardy. Data cleaning with Excel is a powerful tool because of its flexibility and extensive functions and formulas. The steps and tips presented in this article are easy-to-follow, quick, and common ways for data cleaning in Excel. However, data cleaning with Excel is a never-ending process. For as long as data is continuously used, edited, updated, and accessed by different people, reliable clean data in Excel is important.  In other words, the integrity of a tidy and clean data in Excel must be maintained as much as possible. Data cleaning with Excel helps entrepreneurs, analysts, executives, and other professionals to not only optimize data but to translate these into useful information for business improvements and strategies.