What Is a CGPA Calculator?
CGPA stands for Cumulative Grade Point Average — a single number that summarizes academic performance across every semester completed so far, on a 10-point scale used by many universities worldwide. This calculator handles the three numbers students actually need: SGPA (one semester's grade point average), CGPA (the cumulative figure across all semesters), and the percentage equivalent that many forms and applications still ask for.
The three numbers build on each other. SGPA comes from a single semester's courses and credits; CGPA comes from combining every semester's SGPA, weighted by how many credits each semester carried. Get the weighting wrong — treating a 12-credit semester the same as a 22-credit one — and the CGPA comes out wrong even if every individual SGPA was calculated correctly.
How to Use This Calculator
- SGPA mode — add each course's credit hours and grade for one semester; get that semester's SGPA
- CGPA mode — add each semester's SGPA and total credits; get your cumulative CGPA across all of them
- CGPA → Percentage mode — enter your CGPA to see the percentage equivalent under both the common ×9.5 and ×10 conventions
The SGPA and CGPA Formulas
Both formulas are a weighted average — SGPA weights by course credits within one semester, CGPA weights by semester credits across all semesters:
The 10-Point Grading Scale
This standard 8-grade scale is used across many universities and technical institutions internationally, though the exact grade names can vary slightly by institution:
| Grade | Grade Point | Description |
|---|---|---|
| O (Outstanding) | 10 | Top of the class |
| A+ (Excellent) | 9 | Very strong performance |
| A (Very Good) | 8 | Strong performance |
| B+ (Good) | 7 | Above average |
| B (Above Average) | 6 | Solid pass |
| C (Average) | 5 | Meets minimum expectations |
| P (Pass) | 4 | Minimum passing grade |
| F (Fail) | 0 | Course not passed; typically requires a repeat |
SGPA to CGPA — A Full Example Across Four Semesters
Continuing the Semester 1 example above (SGPA 8.125, 16 credits), here's how three more semesters combine into a final CGPA:
| Semester | SGPA | Credits | SGPA × Credits |
|---|---|---|---|
| Semester 1 | 8.125 | 16 | 130.0 |
| Semester 2 | 8.5 | 18 | 153.0 |
| Semester 3 | 7.8 | 20 | 156.0 |
| Semester 4 | 8.9 | 19 | 169.1 |
| Total | — | 73 | 608.1 |
CGPA = 608.1 ÷ 73 = 8.3301, usually rounded to 8.33. Notice this isn't a simple average of the four SGPAs (which would be 8.331 — coincidentally close here, but only because the credit loads happen to be similar across semesters). If one semester carried far more credits than the others, the simple average and the credit-weighted CGPA would diverge more noticeably.
Converting CGPA to Percentage
The most widely used conversion multiplies CGPA by 9.5. Some universities instead use a straight ×10 multiplier. Neither is universally "correct" — check what your specific board or university publishes:
| CGPA | Percentage (×9.5) | Percentage (×10) |
|---|---|---|
| 6.0 | 57.0% | 60.0% |
| 7.0 | 66.5% | 70.0% |
| 7.5 | 71.25% | 75.0% |
| 8.0 | 76.0% | 80.0% |
| 8.33 | 79.14% | 83.3% |
| 9.0 | 85.5% | 90.0% |
| 9.5 | 90.25% | 95.0% |
| 10.0 | 95.0% | 100.0% |
The gap between the two methods widens as CGPA rises — at CGPA 6.0 the two conventions differ by 3 percentage points (57% vs 60%), but at CGPA 9.5 they differ by nearly 5 (90.25% vs 95%). For anything going on an official transcript or application, use whichever formula your institution's own examination handbook specifies, not just the more common one.
CGPA vs GPA (4.0 Scale) — Rough International Equivalence
Students applying to universities that use the US-style 4.0 GPA scale often need an approximate equivalence. There's no single official conversion — credential evaluators typically go through percentage first, then map percentage bands to a 4.0 range. These bands are commonly cited but approximate, not a fixed formula:
| Percentage | Approx. 4.0 GPA |
|---|---|
| 90–100% | ~4.0 |
| 80–89% | ~3.7 |
| 70–79% | ~3.3 |
| 60–69% | ~3.0 |
| 50–59% | ~2.3 |
| 40–49% | ~2.0 |
If a specific university or credential evaluator (like WES) has published its own conversion table for your institution, use theirs — this table is a general reference, not a substitute for an official evaluation. Reference: World Education Services (WES) for credential evaluation standards.
6 Things to Know About CGPA
- Credits matter as much as grades. An O grade (10 points) in a 2-credit elective adds only 20 grade points to your total, while a B+ (7 points) in a 4-credit core course adds 28 — the core course affects your SGPA more even with a lower grade.
- Later semesters don't get extra weight by default. In the standard formula, a Semester 4 SGPA of 8.9 counts exactly as much per credit as a Semester 1 SGPA of 8.125 — CGPA doesn't automatically reward recent improvement unless your specific university's policy says otherwise.
- An F grade drags CGPA down harder than a low pass. Since F carries 0 grade points, a failed 4-credit course contributes zero points while still counting in the credit total — worse for your average than if that credit slot simply didn't exist.
- Recovering from one bad semester takes more than one good one. Bringing a 6.5 CGPA (after several semesters) up to 8.0 with one strong semester of similar credit load isn't mathematically possible — the more semesters already completed, the smaller the effect any single new semester has.
- CGPA-to-percentage multipliers genuinely differ by institution. Using ×10 instead of the correct ×9.5 (or vice versa) on an 8.33 CGPA changes the reported percentage from 79.14% to 83.3% — a 4-point gap that matters on scholarship or job applications with percentage cutoffs.
- A single low-credit course rarely sinks an otherwise strong semester. One C grade (5 points) in a 1-credit lab, alongside four other courses averaging A grades, barely moves the overall SGPA — credit-weighting protects against small courses having outsized effects.