First sem low, second high?

Credits matter. A 24 credit sem pulls more than a 18 credit one.

Type the SGPA after backlog result if that is what college uses. Dont guess old failed SGPA.

Add rows as needed. Empty SGPA rows are skipped.

CGPA

SGPA to CGPA

Semester rows. Average with optional credits.

Add each semester SGPA. If credits differ, type credits too. CGPA is credit weighted when credits exist, else simple average.

Formula used: CGPA = Σ(SGPA × credits) / Σ credits ; or simple mean if credits empty

This is an estimate. Your board formula may differ.

First sem low, second high?: Credits matter. A 24 credit sem pulls more than a 18 credit one.
Backlog semester?: Type the SGPA after backlog result if that is what college uses. Dont guess old failed SGPA.
How many semesters?: Add rows as needed. Empty SGPA rows are skipped.