I developed an interactive calculator that enables businesses to forecast marketing campaign outcomes with precision. The tool combines stepper inputs, dynamic sliders, and real-time data visualization to estimate key performance metrics such as impressions, reach, and engagement. Its clean, responsive design ensures clarity for both internal teams and client presentations. With an intuitive UI and polished light/dark themes, it delivers both functionality and style—perfect for data-driven presentations or client-facing tools. By translating complex data into actionable insights, this calculator supports smarter budgeting, resource allocation, and ROI-driven decision making.