Anna University CGPA to Percentage (R2013 / R2017 / R2021)
Anna University keeps it simple — but it is different from most other Tamil Nadu universities.
· Verified against official sources
Anna University uses CGPA × 10. So a CGPA of 8.5 is exactly 85%. This is set officially in Regulation 2021 (Clause 16) and applies to R2013 and R2017 students too.
Note the contrast: Bharathiar, Bharathidasan and Madurai Kamaraj (also Tamil Nadu) use × 9.5, not × 10. So do not assume every Tamil Nadu university is the same.
Formulas & worked examples
Example uses a CGPA of 8.5 out of 10.
| University | Scheme / regulation | Formula | CGPA 8.5 → |
|---|---|---|---|
| Anna University | R2013 / R2017 / R2021 | CGPA × 10 | 85% |
Sources for these formulas
- Anna University — official / authoritative source ↗
Frequently asked questions
What is the Anna University CGPA to percentage formula?
Percentage = CGPA × 10, per Regulation 2021, Clause 16 (also R2013/R2017).
Is Anna University the same as other Tamil Nadu universities?
No. Anna uses ×10, but Bharathiar and Bharathidasan use ×9.5. Always match the specific university.
Related guides
Formulas are verified against official or authoritative sources and reflect rules known as of 9 July 2026. Universities can revise conversion rules — always confirm with your examination cell for official submissions.