How to Calculate SGPA: Credits, Grade Points and a Worked Example
A clear walk-through of how a semester's SGPA is worked out from subject credits and grade points, with an example and common mistakes.
What SGPA measures
SGPA is your Semester Grade Point Average. It reduces all your subject results in one semester to a single number, usually on a 10-point scale, so you can compare semesters easily.
The formula
SGPA = sum of (credit × grade point) for every subject ÷ sum of credits. Credits show how heavy a subject is, and the grade point comes from your letter grade according to your university's table, for example O = 10, A+ = 9 and so on. Always use your own university's table because the values differ.
A worked example
Imagine four subjects: 4 credits with grade point 9, 3 credits with 8, 3 credits with 7 and 2 credits with 10. The weighted total is 36 + 24 + 21 + 20 = 101. Total credits are 12. SGPA = 101 ÷ 12 = 8.42.
Predicting before results
If you already have internal marks, you can estimate grades for each subject, calculate the likely SGPA and see how much one subject changes it. A subject with more credits moves the SGPA more than a lighter one, so prioritise your effort accordingly.
Common mistakes
Using plain averages instead of credit weights.
Including audit or non-credit subjects that your university leaves out of SGPA.
Using last year's grade table after a syllabus or scheme change.
This guide is general information. Rules differ between institutions, so confirm requirements with your college or the portal you are using.