IMCCalc is a free Google Chrome extension designed to calculate the Body Mass Index (BMI) based on user-inputted weight and height. It features data persistence through IndexedDB, allowing users to save previous calculations and manage their data effectively. Additionally, users can export their BMI data to a CSV file or delete it directly from the local database.

The extension supports multiple languages, including Portuguese, English, and Spanish, and offers a toggle between light and dark themes via a dropdown menu. Its responsive design ensures compatibility across various screen sizes, making it accessible for a wide range of users. IMCCalc also classifies BMI according to categories established by the World Health Organization (WHO), enhancing its utility for health monitoring.