What is CGPA and SGPA?
SGPA (Semester Grade Point Average) is the weighted average of the grade points you earn in a single semester. CGPA (Cumulative Grade Point Average) is the overall average across all completed semesters, weighted by the credits of each course.
Most Indian universities and boards, including CBSE, use a 10-point grading scale where each letter grade maps to a grade point (for example, A+ = 10, A = 9, B+ = 8, and so on).
The CGPA Calculation Formula
The standard credit-weighted formula is:
- CGPA = (Sum of Grade Point × Credit for each subject) ÷ (Total Credits)
- Percentage = CGPA × 9.5 (the common CBSE / university conversion)
If all your subjects carry equal credits, the CGPA is simply the average of your grade points.
Step-by-Step CGPA Calculation
Suppose you have three subjects in a semester:
Note Your Grade Points and Credits
Subject A: grade point 9, credits 4. Subject B: grade point 8, credits 3. Subject C: grade point 10, credits 3.
Multiply Grade Points by Credits
A = 9 × 4 = 36, B = 8 × 3 = 24, C = 10 × 3 = 30. Total credit points = 90.
Divide by Total Credits
Total credits = 4 + 3 + 3 = 10. CGPA = 90 ÷ 10 = 9.0.
Convert to Percentage
Percentage = 9.0 × 9.5 = 85.5%.
Skip the Manual Math
Enter your grades and credits and get your SGPA, CGPA, and percentage instantly.
Open CGPA Calculator →Converting CGPA to Percentage
The most widely used formula in India multiplies CGPA by 9.5. However, some universities use their own multiplier or a fixed conversion table, so always confirm the exact rule on your institution's official website before using a converted value on applications.
Frequently Asked Questions
What is the difference between SGPA and CGPA?
SGPA is your average for one semester, while CGPA is the cumulative average across all semesters weighted by credits.
How do I convert CGPA to percentage?
The common CBSE and university formula multiplies your CGPA by 9.5. For example, a CGPA of 8.0 equals 76%.
Is the 9.5 multiplier the same for every university?
No. It is widely used but some universities apply a different multiplier or conversion table. Always check your institution's official rule.