Written by ZufishanMS Environmental ScienceLast reviewed
Anna University R2021 grade points
| Letter grade | Grade points | Marks (absolute grading) |
|---|---|---|
| O (Outstanding) | 10 | 91 to 100 |
| A+ (Excellent) | 9 | 81 to 90 |
| A (Very Good) | 8 | 71 to 80 |
| B+ (Good) | 7 | 61 to 70 |
| B (Average) | 6 | 56 to 60 |
| C (Satisfactory) | 5 | 50 to 55 |
| U (Re-appearance) | 0 | Below 50 |
| SA (Shortage of Attendance) | 0 | none |
| WD (Withdrawal) | 0 | none |
Grade points are from clause 15.1; the mark ranges are the table for absolute grading. Most theory courses with more than 30 students who pass are graded relatively, so their cut-offs can differ.
The GPA formula
GPA = Σ(credits × grade points) ÷ Σ(credits), over the courses you cleared in the semester. Clause 15.5 adds that U grades are excluded, so a course you have not yet cleared adds nothing to either side. For CGPA, use every cleared course from the first semester onwards.
Worked example
| Course | Credits | Grade | Points | Credits × points |
|---|---|---|---|---|
| Course 1 | 4 | O | 10 | 40 |
| Course 2 | 3 | A+ | 9 | 27 |
| Course 3 | 3 | B | 6 | 18 |
| Course 4 | 3 | U | 0 | excluded |
| Course 5 | 2 | C | 5 | 10 |
Cleared credits = 4 + 3 + 3 + 2 = 12. GPA = (40 + 27 + 18 + 10) ÷ 12 = 95 ÷ 12 = 7.92. Counting the U course's 3 credits by mistake would give 95 ÷ 15 = 6.33, which is not how the regulations compute it.
From GPA to percentage
Clause 15.5.2 converts the CGPA on the consolidated grade sheet into a percentage as CGPA × 10, so a final CGPA of 7.92 is 79.2%. The Anna University CGPA Calculator does this conversion and explains which rule applies to older regulations.
How to use this calculator
- Add one row per course and enter its credits from your curriculum.
- Pick the letter grade from your result or grade sheet.
- Read the GPA and the credits counted. Courses graded U, SA or WD are left out automatically.
- For CGPA, enter the courses from every semester together.
Common mistakes
Counting U grades as zero. The regulations exclude them, so including them understates your GPA.
Averaging semester GPAs. Semesters with more credits carry more weight. Enter the courses, or use the SGPA to CGPA Calculator with each semester's credits.
Using R2021 points at an autonomous college. Autonomous colleges publish their own regulations; see the REC Grade Calculator for one example.
Based on Anna University's Affiliated Institutions Regulations 2021 (approved version with amendments), read on 20 September 2026. Your official GPA is the one on your grade sheet.
Sources
The formula on this page follows the documents below. Confirm any figure that matters with the issuing body or your registrar.
- Anna University: Affiliated Institutions Regulations 2021 (B.E./B.Tech.), clauses 15.1 and 15.5: Grade points O=10 to C=5, U/SA/WD=0; GPA over courses cleared, U excluded; read 20 September 2026 (the site may not load outside India)
- Anna University: Affiliated Institutions Regulations 2021 (B.E./B.Tech.), clause 15.5.2: Non-autonomous affiliated colleges and University Colleges of Engineering, from 2021-22: Percentage of Marks = CGPA × 10 (inserted clause); read 20 September 2026 (the site may not load outside India)