About Us

Hello! I am an engineering student and web developer based in Tamil Nadu. I built Internal Calculator to solve a problem every engineering student faces: the stress and confusion of calculating internal marks and CGPA.

The rules for internal assessment in Anna University affiliated colleges and other autonomous institutions can be quite complex. Converting CAT 1, CAT 2, CAT 3, and assignment scores into a final internal mark out of 40 (or 20) is something we all do nervously before our final exams.

This site exists to make that process instant and accurate. No more manual calculations or guessing games. With our tools, you can simply input your scores and immediately see where you stand and what you need to score in the university exams to pass.