The primary purpose of data visualization tools is to transform complex data sets into graphical formats, making it easier to understand trends, patterns, and insights. These tools utilize charts, graphs, and interactive dashboards to present information visually, enabling users to quickly grasp key metrics and make informed decisions. Data visualization supports better communication of data findings among stakeholders, enhances the analytical process, and plays a critical role in areas such as business intelligence, scientific research, and marketing analytics. Ultimately, it facilitates data-driven decision-making.