The Tohoku University GPA Calculator is a Chrome extension designed to enhance the academic management system of Tohoku University by adding GPA calculation capabilities. This tool seamlessly integrates into the grades inquiry page, automatically extracting your grades from the HTML and calculating the GPA without the need for manual input or copy-pasting.

Key features include automatic GPA calculation, filtering options based on course types and academic periods, and the ability to download the displayed course list in CSV format. The extension maintains the original design of the academic management system, ensuring a cohesive user experience. Additionally, it operates solely on the user's Chrome browser without external communication, providing a secure method for GPA calculation compared to traditional GPA calculation websites.