How to calculate Anna University GPA and CGPA
Use your course credits and letter grades to calculate one semester’s GPA or your cumulative CGPA. This guide covers affiliated B.E. and B.Tech programmes under R2021 and R2025.
Open the GPA and CGPA calculatorR2021 and R2025 grade points
Check which regulation applies on your grade sheet or with your college. Grade O is worth 10 points in R2021. Grade S is worth 10 in R2025, which also gives B a different value.
| Grade | R2021 points | R2025 points |
|---|---|---|
| O | 10 | — |
| S | — | 10 |
| A+ | 9 | 9 |
| A | 8 | 8 |
| B+ | 7 | 7 |
| B | 6 | 6.5 |
| C+ | — | 6 |
| C | 5 | 5 |
| U | 0 | 0 |
| SA | 0 | 0 |
| WD | 0 | — |
| WC | — | 0 |
A dash means the grade is absent from that scale.
Worked example for one semester
Say you earned A+ in a 4-credit subject, A in a 3-credit subject, and B in a 2-credit subject. Multiply each course’s credits by its grade points and divide the sum by the 9 credits.
- R2021 gives (4 × 9 + 3 × 8 + 2 × 6) ÷ 9 = 8.00.
- R2025 gives (4 × 9 + 3 × 8 + 2 × 6.5) ÷ 9 = 8.11.
Worked example across semesters
Suppose semester one contributed 162 grade points across 18 eligible credits and semester two contributed 176 across 22 eligible credits. Add the points and divide by the combined credits. (162 + 176) ÷ (18 + 22) gives a CGPA of 8.45.
In the calculator, choose CGPA · All semesters and add the eligible courses from each semester. Use the original course grades if the semester GPAs on your sheet have been rounded.
Which credits should you count?
Use your grade sheet to identify the courses that count towards your programme. R2021 excludes U grades from GPA and CGPA. The R2025 calculation weights the registered courses by credit, with U, SA and WC listed as zero-point grades. Check with your college before including repeat attempts, electives beyond the curriculum, or honours and minor courses.
See Anna University R2021 section 15 and R2025 sections 20–21 for the official tables and formulas.