Difference Between CGPA and SGPA Explained
What is the difference between CGPA and SGPA? Understand how semester performance impacts your cumulative degree standing, credit-weighting rules, and conversion formulas for marksheets.
The Key Distinction at a Glance
SGPA measures your grade in a single academic term. CGPA is the cumulative average across all completed semesters up to graduation.
CGPA vs. SGPA: Side-by-Side Comparison
| Comparison Factor | SGPA (Semester Grade Point Average) | CGPA (Cumulative Grade Point Average) |
|---|---|---|
| Full Form | Semester Grade Point Average | Cumulative Grade Point Average |
| Scope of Evaluation | Single semester (usually 4–6 months) | All semesters completed to date (up to 4 years) |
| Frequency of Update | Updated at the end of each semester examination | Recalculated dynamically after each new semester result |
| Formula Used | Σ(Semester Credits × Grade Point) / ΣCredits |
Σ(SGPA × Credits) / Total Degree Credits |
| Final Marksheet Role | Indicates short-term performance trend | Determines final degree division (Distinction / First Class) |
| Impact of Single Bad Grade | High impact on that semester's score | Diluted across the full degree credit pool |
How to Convert SGPA to CGPA
You cannot simply take a regular arithmetic average of your SGPA scores unless every semester has the exact same number of credits. The mathematically correct method is:
Where Cᵢ represents the total credit hours registered in Semester i.
Can Your CGPA be Higher than Your SGPA?
Yes. If your current semester performance drops (for example, you score 7.2 SGPA this semester), but your previous semesters were 8.5 and 8.8, your cumulative CGPA will remain higher than 7.2 because it averages your past stronger semesters.
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Interactive SGPA Calculator
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Calculate SGPA →SGPA to Percentage Converter
Convert single semester scores into equivalent percentage and cumulative CGPA estimates.
Convert SGPA →CGPA to Percentage Calculator
Convert your final degree cumulative grade using CBSE and university formulas.
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