This paper presents IntelliCalc, an innovative AI-powered cross-platform calculator web application that seamlessly integrates symbolic computation, computer vision, and natural language processing. By processing handwritten equations, visual data, and textual narratives, IntelliCalc delivers advanced computational capabilities, making it a versatile tool for various applications. The key contributions of this work include the development of a modular API, dataset-specific performance evaluation, and demonstration of use-case applicability across education and professional domains. In response to reviewer feedback, this paper prioritizes structural clarity, connection to existing literature, benchmarking transparency, and improved scalability. Through its novel integration of AI-powered technologies, IntelliCalc addresses the limitations of traditional calculator applications, providing a robust and user-friendly interface for complex computations. The application’s potential impact spans multiple fields, including education, engineering, finance, and research, making it a valuable contribution to the field of intelligent systems and computational tools. IntelliCalc’s architecture is designed to provide a flexible and scalable framework for advanced computations. The application’s modular API enables seamless integration with other tools and services, while its dataset-specific performance evaluation ensures accuracy and reliability. The use-case applicability of IntelliCalc is demonstrated through its potential applications in education and professional domains, highlighting its versatility and potential impact.