SGPA to CGPA Calculator
Enter the SGPA and total credits of each semester to get your CGPA, weighted by credits. Leave credits blank to see a plain average instead.
Weighted CGPA vs a simple average
CGPA gives each semester a weight equal to its credits. A plain average gives every semester the same weight. The two agree only when all semesters have equal credits, a fact that follows directly from the formula: if every Ci is the same number c, then Σ(c × Si) ÷ (n × c) is just the average of the Si.
| Example | Sem 1 | Sem 2 | Weighted CGPA | Plain average |
|---|---|---|---|---|
| Equal credits (20 + 20) | 8.00 | 6.00 | 7.00 | 7.00 |
| Unequal credits (30 + 10) | 8.00 | 6.00 | 7.50 | 7.00 |
In the second row the 30-credit semester dominates: (30 × 8 + 10 × 6) ÷ 40 = 7.50.
Next steps
- Don’t have your SGPAs yet? Work them out from course grades with the SGPA calculator or the CGPA calculator.
- Need a percentage? Use CGPA to percentage with your university’s formula.
Frequently asked questions
How do I convert SGPA to CGPA?
Multiply each semester's SGPA by that semester's total credits, add the results, and divide by the total credits of all the semesters. That is the UGC formula CGPA = Σ(Ci × Si) ÷ ΣCi.
Can I just average my SGPAs?
Only when every semester carries the same number of credits; then the plain average and the credit-weighted CGPA are identical. When credits differ, the plain average is off. In the UGC's example it gives 6.77 instead of the correct 6.73.
Where do I find the credits for each semester?
On your semester grade card, usually as total credits registered or earned for the semester. If your university's regulations exclude failed courses from CGPA, use the credits of the courses that count.
What if I don't know the credits?
Leave the credits blank for every semester and the calculator shows the plain average, clearly labelled. It equals your CGPA only if the semesters had equal credits.
My calculated CGPA differs slightly from my grade card. Why?
Grade cards print SGPAs rounded to two decimals, while the university computes CGPA from the unrounded course grades. The difference is usually in the second decimal place. Your grade card is authoritative.