Anna University CGPA Calculator

Whether you're checking your performance for the semester or keeping track of your overall academic score, this Anna University CGPA calculator helps you calculate your GPA or CGPA using your grades and course credits.

Enter your subject grades and credits to calculate your GPA, or add your semester scores to work out your overall CGPA. If you'd rather calculate it yourself or want to understand what your score means, the sections below explain the Anna University grading system, the official calculation formula, degree classification, and CGPA-to-percentage conversion.

What is CGPA at Anna University?

CGPA (Cumulative Grade Point Average) shows your overall academic performance across the semesters you have completed. At Anna University, CGPA is calculated using the grade points and credits of the applicable courses, so a course with more credits has a greater effect on the final score.
The basic formula is:

CGPA = Σ (Grade Point × Course Credit) ÷ Σ Course Credits

For example, if you receive a grade point of 8 in a 4-credit subject, that subject contributes 8 × 4 = 32 credit points to the calculation. The credit points from all applicable courses are then added and divided by the total number of credits.

What is GPA at Anna University?

GPA (Grade Point Average) represents your academic performance for a single semester. It is calculated using the grade points and credits of the courses you have registered for in that semester.

GPA = Σ (Grade Point × Course Credit) ÷ Σ Course Credits

You may also see the term SGPA (Semester Grade Point Average) used for a semester-wise score. In this context, GPA or SGPA refers to your performance for a particular semester, while CGPA represents your cumulative performance across completed semesters. You can use the Anna University GPA calculator to calculate your semester GPA using your grades and course credits.

Under Anna University's Regulation 2025, GPA is calculated as a credit-weighted average of the grade points earned in the courses registered during the semester. CGPA follows the same method using the applicable courses completed up to the latest semester.

Formula Used to Calculate Anna University CGPA

Anna University uses a credit-weighted formula to calculate both GPA and CGPA. This means the grade point you earn in a subject is multiplied by the credits assigned to that subject.

GPA/CGPA = Σ (Credit × Grade Point) ÷ Σ Credits

Here:

• Credit is the number of credits assigned to the subject.
• Grade Point is the point assigned to the grade you receive.
• Σ means the total of all the applicable subjects.

For example, if you get a grade point of 9 in a 4-credit subject, that subject contributes 9 × 4 = 36 points to the calculation. The points from all applicable subjects are then added and divided by the total number of credits.

The formula is the same for GPA and CGPA, but the subjects included are different. GPA is calculated using the subjects you take in one semester, while CGPA is calculated using your results across all the semesters you have completed so far. Your CGPA is shown up to two decimal places under Anna University Regulation 2025.

Details of grading system followed at Anna University for regulation 2025 and 2021

Anna University uses different grading systems depending on the regulation applicable to your batch. Both Regulation 2025 and Regulation 2021 use a 10-point scale, but the grade names, grade points and marks ranges differ between the two regulations. If you are using our calculator, select Regulation 2025 or Regulation 2021 based on the regulation you are studying under.

Anna University Regulation 2025 Grading System

Anna University assigns a grade and a corresponding grade point based on the marks you score in a course. For students under Regulation 2025, the grades and grade points are:

Grade	Description	Grade Point	Marks Range
S	Outstanding	10	91-100
A+	Excellent	9	81-90
A	Very Good	8	71-80
B+	Good	7	66-70
B	Above Average	6.5	61-65
C+	Average	6	56-60
C	Satisfactory	5	50-55
U	Re-appearance	0	Below 50
SA	Shortage of Attendance	0	-
WC	Withdrawal of Course	0	-

For example, if you score between 81 and 90 marks, you receive an A+ grade, which carries 9 grade points. Similarly, a score between 66 and 70 marks corresponds to a B+ grade and 7 grade points. Anna University follows these absolute grading ranges for R2025. The grade point you receive is then used along with your course credits to calculate your GPA or CGPA.

Anna University Regulation 2021 Grading System

Anna University assigns a grade and a corresponding grade point based on the marks you score in a course. For students under Regulation 2021, the grades and grade points are:

Grade	Description	Grade Point	Marks Range
O	Outstanding	10	91-100
A+	Excellent	9	81-90
A	Very Good	8	71-80
B+	Good	7	61-70
B	Average	6	56-60
C	Satisfactory	5	50-55
U	Re-appearance	0	Below 50
SA	Shortage of Attendance	0
W	Withdrawal	0

For example, a score between 81 and 90 marks gives you an A+ grade, which carries 9 grade points. Similarly, a score between 61 and 70 marks gives you a B+ grade and 7 grade points. For Regulation 2021, the grade point earned in each course is combined with the course credits to calculate your GPA or CGPA. Make sure you select the calculator that matches your regulation before entering your grades and credits.

Anna University Degree Classification Based on CGPA

Your CGPA also plays a role in deciding your final degree classification at Anna University. The main CGPA thresholds are 6.50 for First Class and 8.50 for First Class with Distinction. However, your CGPA alone does not decide the classification. Other conditions in the applicable regulation also matter.

For students under Regulation 2025:

• First Class with Distinction: You need a CGPA of 8.50 or above, along with the other requirements mentioned in the regulation.
• First Class: You need a CGPA of 6.50 or above, along with the applicable requirements.
• Second Class: If you qualify for the degree but do not meet the requirements for First Class or First Class with Distinction, you receive Second Class.

For example, if your CGPA is 8.50, you meet the CGPA requirement for First Class with Distinction. But this does not automatically mean you will receive that classification, as other conditions also apply.

The 6.50 and 8.50 CGPA thresholds also apply to Regulation 2021, subject to the conditions specified in that regulation. Your official Anna University academic record will show your final degree classification.

How to Calculate CGPA Manually?

Your scorecard may already show your CGPA, but knowing how it is calculated can help you check your result yourself. The calculation is based on the grade points and credits of your courses, so you cannot simply take the average of all your grades. Let's see how it works with a simple example.

Example: Calculating CGPA for Two Semesters

Suppose a student has completed two semesters with the following results.

Semester 1

Subject	Grade	Grade Point	Credits
Subject 1	S	10	4
Subject 2	A+	9	3
Subject 3	A	8	3

Semester 2

Subject	Grade	Grade Point	Credits
Subject 4	S	10	3
Subject 5	A+	9	4
Subject 6	B+	7	3

Step 1: Multiply each grade point by its course credits

For Semester 1:

• Subject 1: 10 × 4 = 40
• Subject 2: 9 × 3 = 27
• Subject 3: 8 × 3 = 24

Total grade points = 40 + 27 + 24 = 91

Total credits = 4 + 3 + 3 = 10

For Semester 2:

• Subject 4: 10 × 3 = 30
• Subject 5: 9 × 4 = 36
• Subject 6: 7 × 3 = 21

Total grade points = 30 + 36 + 21 = 87

Total credits = 3 + 4 + 3 = 10

Step 2: Calculate the overall CGPA

Now add the grade points and credits from both semesters:

CGPA = Total grade points ÷ Total credits

CGPA = (91 + 87) ÷ (10 + 10)

CGPA = 178 ÷ 20

CGPA = 8.90

So, the student's CGPA after two semesters is 8.90.

This method gives more weight to subjects with more credits. For example, a 4-credit subject affects your CGPA more than a 3-credit subject because its grade point is multiplied by a larger credit value. This credit-weighted method is used for CGPA under Anna University's Regulation 2025. CGPA includes the applicable courses completed up to the latest semester.

CGPA to Percentage Conversion

Want to know what your Anna University CGPA means in percentage? For both Regulations 2021 & 2025, you can convert your CGPA to percentage by multiplying it by 10.

Percentage = CGPA × 10

From the above example, your CGPA is 8.90:

Percentage = 8.90 × 10 = 89%

So, a CGPA of 8.90 is equivalent to 89% using the Anna University conversion formula.

If you want to learn more about the calculation, CGPA and its conversion to percentage, you can refer our CGPA to Percentage Calculator.

How to Calculate GPA Manually?

You can also calculate your semester GPA yourself using the grade points and credits for each subject. Just multiply each grade point by its course credits, add the results, and divide by the total number of credits.

GPA = Σ (Grade Point × Course Credit) ÷ Σ Course Credits

Example: Calculate GPA for Semester 1

Suppose your Semester 1 results are:

Subject	Grade	Grade Point	Credits
Subject 1	S	10	3
Subject 2	A+	9	2
Subject 3	A	8	3

Now calculate the weighted grade points for each subject:

• Subject 1: 10 × 3 = 30
• Subject 2: 9 × 2 = 18
• Subject 3: 8 × 3 = 24

Add them together:

30 + 18 + 24 = 72

Now add the total credits:

3 + 2 + 3 = 8

So:

GPA = 72 ÷ 8 = 9.00

Therefore, your Semester 1 GPA is 9.00.

This is a credit-weighted calculation, so a subject with more credits has a greater effect on your GPA.

Key Takeaways

• GPA shows your performance in a particular semester, while CGPA shows your overall performance across the semesters you have completed.
• Both GPA and CGPA use a credit-weighted calculation, so the credits assigned to each course affect your final score.
• Make sure you use the Regulation 2025 or Regulation 2021 calculator that applies to your batch.
• Anna University CGPA can be converted to percentage by multiplying it by 10.
• A 6.50 CGPA meets the CGPA requirement for First Class, while 8.50 CGPA meets the CGPA requirement for First Class with Distinction. Other conditions under the applicable regulation also apply.

FAQs of Anna University CGPA Calculator

1. How does Anna University calculate CGPA?

Anna University CGPA is calculated using a credit-weighted average of grade points and course credits. Multiply each grade point by its course credit, add the results, and divide by the total credits.

2. How to convert Anna University CGPA to percentage?

Multiply your Anna University CGPA by 10 to convert it to percentage. For example, an 8.3 CGPA is equal to 83%.

3. How does the Anna University CGPA calculator work?

The Anna University CGPA calculator uses your grades, grade points and course credits to calculate your cumulative CGPA. Select Regulation 2025 or Regulation 2021 based on your batch for the correct grading system.

4. How does the Anna University GPA calculator work?

The Anna University GPA calculator calculates your semester GPA using your grade points and course credits. It uses the credit-weighted GPA formula prescribed by Anna University.

5. Which Anna University CGPA calculator should I use?

Use the Regulation 2025 CGPA calculator if your batch follows R2025 and the Regulation 2021 CGPA calculator if it follows R2021.

6. What is the difference between GPA and CGPA at Anna University?

GPA measures your performance in one semester, while CGPA measures your overall performance across completed semesters. Both are calculated using grade points and course credits.

7. How do credits affect Anna University CGPA?

Subjects with more credits have a greater effect on your CGPA. For example, a 4-credit subject carries more weight in the CGPA calculation than a 2-credit subject.

8. Can I calculate CGPA using my semester GPA?

Yes. You can calculate CGPA from semester GPA using the GPA and total credits for each semester. If the credit totals differ, use a credit-weighted calculation instead of simply averaging the GPAs.

9. What CGPA is required for First Class at Anna University?

A CGPA of 6.50 or above meets the CGPA requirement for First Class at Anna University, subject to the other conditions of the applicable regulation.

10. What CGPA is required for First Class with Distinction at Anna University?

A CGPA of 8.50 or above meets the CGPA requirement for First Class with Distinction. Other conditions, such as first-appearance requirements, also apply.

11. What is the difference between Anna University Regulation 2025 and 2021?

Regulation 2025 and Regulation 2021 have different grading systems. R2025 uses S as the highest grade, while R2021 uses O, and some grade points and marks ranges also differ.

12. What is SGPA in Anna University?

SGPA (Semester Grade Point Average) shows your academic performance in one semester. CGPA, on the other hand, shows your cumulative performance across completed semesters.