The Doughnut Chart Maker allows users to create doughnut charts, which are similar to pie charts but with a hollow center. This tool enables users to input their data and generate a doughnut chart that visually represents the proportions of each category. It offers customization options for colors, labels, and chart design, ensuring that the chart is both informative and aesthetically pleasing. With this tool, users can create doughnut charts that provide a unique and effective way to display data proportions.