Anna University CGPA Calculator
Calculate your Anna University SGPA and CGPA instantly.
Last updated: March 2026
Official grading logic for R2021 & R2017 students
Valid for Anna Univ R2017 & R2021. No signup required.
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How to Calculate Anna University CGPA?
Calculating your CGPA at Anna University is straightforward under both Regulation 2017 (R2017) and Regulation 2021 (R2021). The system utilizes a 10-point scale based on your letter grades.
Anna University Grading System (R2017 / R2021)
| Letter Grade | Marks Range | Grade Points |
|---|---|---|
| O (Outstanding) | 91 - 100 | 10 |
| A+ (Excellent) | 81 - 90 | 9 |
| A (Very Good) | 71 - 80 | 8 |
| B+ (Good) | 61 - 70 | 7 |
| B (Average) | 50 - 60 | 6 |
| C (Satisfactory) | -- | 5 |
| U / W | < 50 / Withdrawn | 0 |
Passing Criteria
Under Anna University regulations, a student must secure a minimum grade of C (5 grade points) (R2017) or B (6 grade points) depending on the strictness of the specific course to pass. Grades U (Reappearance) and W (Withdrawn) result in requiring an arrear examination.
How to Convert Anna University CGPA to Percentage?
Anna University has an exact official formula for converting your CGPA into an equivalent percentage, which is required by many placements and higher education institutions.
Example: If your CGPA is 8.0, your percentage is 8.0 × 10 = 80.0%.
Calculation Formula
Where Ci is the number of Credits for subject i, and Gi is the Grade Point earned for subject i.
Frequently Asked Questions
How to calculate CGPA in Anna University?
To calculate CGPA in Anna University (R2017/R2021), multiply your grade points by the credits for each subject, sum them up, and divide by the total credits. SGPA/CGPA = Σ(Grade Points × Credits) ÷ Σ(Credits).
What is the grading system in Anna University (R2021 / R2017)?
Anna University uses a 10-point absolute grading scale: O (10), A+ (9), A (8), B+ (7), B (6), C (5). Grades U (Fail) and W (Withdrawn) earn 0 points.
How to convert Anna University CGPA to percentage?
The official Anna University formula to convert CGPA to percentage is: Percentage = CGPA × 10. For example, a CGPA of 8.5 correlates to 85.0%.
What is an O grade in Anna University?
An 'O' grade stands for Outstanding and awards the maximum 10 grade points. It is typically given for scoring 91 to 100 marks in a subject.
What is the minimum passing grade in Anna University?
A student must secure a minimum grade of 'C' (which corresponds to 5 grade points and 50-60 marks) in order to pass a course under both R2017 and R2021.