CalcInfinityGPA / CGPA Calculator
Add your subjects, credits, and grades to calculate your credit-weighted GPA or CGPA.
What is a GPA/CGPA Calculator?
A GPA/CGPA calculator turns your subject-wise grades into one overall number, weighted by each subject's credits — so a 4-credit course affects your average more than a 1-credit one.
You can add as many subjects as you need and switch between two scales: the 10-point CGPA scale common at Indian institutions, or the 4.0 GPA scale common at US institutions.
Why use a GPA/CGPA calculator?
Averaging grades by hand is easy to get wrong once credits differ between subjects — a straight average of your letter grades over- or under-weights subjects depending on how many credits they carry. This calculator does the credit-weighting for you and updates live as you add or edit subjects.
How GPA/CGPA is calculated
Each subject's grade points are multiplied by its credits, added together, then divided by the total credits.
Example
Grading Scales
| A1 | 10 |
| A2 | 9 |
| B1 | 8 |
| B2 | 7 |
| C1 | 6 |
| C2 | 5 |
| D | 4 |
| E | 0 |
| A | 4.0 |
| A- | 3.7 |
| B+ | 3.3 |
| B | 3.0 |
| B- | 2.7 |
| C+ | 2.3 |
| C | 2.0 |
| C- | 1.7 |
| D+ | 1.3 |
| D | 1.0 |
| F | 0.0 |
Frequently Asked Questions
Common Mistakes to Avoid
- Switch scales if your institution differs. A grade like “B1” only exists on the 10-point scale — switching scales clears grades that no longer apply, so you never get a silently wrong average.
- A subject needs both a grade and credits to count. Leaving either blank means that row is skipped entirely, not treated as a zero.
- GPA/CGPA isn't the same as a percentage. If your institution reports marks as a percentage, use the Percentage ↔ CGPA Converter instead of assuming a 1:1 relationship.
References
- CBSE 10-point grading scale
- Standard US 4.0 GPA scale (conventions vary by institution)
Last reviewed July 2026