CGPA is a most popular grading system which is used by many universities to evaluate their academic scores. CGPA uses different scales like 5 scale,7 scale,4 scale and 10 scale but 4 scale and 10 scale is most popular among them. CGPA is an average of a student’s academic scores and describes a student’s academic performance.
How to calculate CGPA with the help of formulas ?
CGPA is measured on the different scales like 10 scale,5 scale,4 scale or 7 scale . Let’s understand all of them with some simple examples
1. CGPA on a 10 scale Points:
Here are few steps to calculate CGPA on the scale of 10
Step 1: Convert Your Grades into Grade Points:
| Percent | Grade Point |
| 90 – 100 | 10 |
| 80 – 89 | 9 |
| 70 – 79 | 8 |
| 60 – 69 | 7 |
| 50 – 59 | 6 |
| 40 – 49 | 5 |
| 30 – 39 | 4 |
| Below 30 | 0-3 |
Calculation can vary on the basis of your institution’s grading system, but this will provide you a rough idea.
Step 2: Calculate the Grade Points for Each Subject:
First you need to convert your percentage or grade into the grade point.
Step 3: Find the Weighted Average:
If your subjects have different credit hours, you need to calculate grade points on the basis of a weighted average grading system.
To calculate weightage average of any subject you need to multiply grade point by the number of credit hours, then sum up their products. And then divide it by total number of credit hours.
Formula:
CGPA= ∑(Grade Point of Subject × Credit Hours of subject)/ ∑Credit Hours of All Subject
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Example of CGPA Calculation with 10 Grading Scale:
Let’s assume you have 4 subjects with the following details:
| Sub | Grade (%) | Grade Point (Out of 10) | Credit Hours |
| Maths | 85 | 9 | 4 |
| Physics | 75 | 8 | 3 |
| Chemistry | 90 | 10 | 3 |
| Biology | 80 | 9 | 2 |
Step 1: Calculate the weighted grade points for each subject
Maths : 9×4=36
Physics: 8×3=24
Chemistry: 10×3=30
Biology: 9×2=18
Step 2: Sum of weighted grade points
36+24+30+18=108
Step 3: Sum of credit hours
4+3+3+2=12
Step 4: Calculate CGPA
CGPA=108/12=9
So, your CGPA is 9.0 on a scale of 10.
2. CGPA on a 4 scale points
To calculate CGPA on a 4-point scale, you need to follow following steps
Step 1: Convert Your Grades to Grade Points:
You can convert convert your grade in grade point with the help of following details
| Percentage (%) | Grade Point (Out of 4) |
| 90 – 100 | 4.0 |
| 80 – 89 | 3.7 |
| 70 – 79 | 3.3 |
| 60 – 69 | 3.0 |
| 50 – 59 | 2.7 |
| 40 – 49 | 2.3 |
| 30 – 39 | 2.0 |
| Below 30 | Below 2.0 (depending on institution) |
Step 2: Than, convert your percentage into corresponding grade point.
Step 3: Now ,try to calculate the weighted average by. Multiplying your grade point with each subject by its respective credit hours, and then divide by the total number of credit hours.
Formula: CGPA=∑(Grade Point of Subject × Credit Hours of subject)/ ∑Credit Hours of All Subject
Example of CGPA Calculation with 4 Grading Scale:
Let’s suppose you have the following subjects and grades:
| Subject | Grade (%) | Grade Point (Out of 4) | Credit Hours |
| Math | 85 | 3.7 | 4 |
| Physics | 75 | 3.3 | 3 |
| Chemistry | 90 | 4.0 | 3 |
| Biology | 70 | 3.3 | 2 |
Step 1: Convert the grades to grade points:
- Math: 85% = 3.7
- Physics: 75% = 3.3
- Chemistry: 90% = 4.0
- Biology: 70% = 3.3
Step 2: Calculate the weighted grade points for each subject:
- Math: 3.7×4=14.8
- Physics: 3.3×3=9.9
- Chemistry: 4.0×3=12.0
- Biology: 3.3×2=6.6
Step 3: Sum of the weighted grade points:
14.8+9.9+12.0+6.6=43.3
Step 4: Sum of credit hours:
4+3+3+2=124 + 3 + 3 + 2 = 12
Step 5: Calculate CGPA:
CGPA=43.312=3.61
Conclusion: CGPA on a 4-point scale = 3.61.
3. Percentage into CGPA in a 5 Scale Points
Here some simple steps for 5 scale point
Step 1: First, Convert Grades into Grade Points with help of below mentioned details,
| Percentage (%) | Grade Point (Out of 5) |
| 90 – 100 | 5.0 |
| 80 – 89 | 4.5 |
| 70 – 79 | 4.0 |
| 60 – 69 | 3.5 |
| 50 – 59 | 3.0 |
| 40 – 49 | 2.5 |
| 30 – 39 | 2.0 |
| Below 30 | Below 2.0 (depending on institution) |
Step 2: Convert Each Subject’s Grade to Grade Points into corresponding grade point as per 5-point scale.
Step 3: Then, Calculate the Weighted Average. If your subjects has different credit hours, you should calculate a weighted average for the CGPA.by Multiplying the grade point of each subject by its respective credit hours, and then divide the sum by the total credit hours.
Formula:
CGPA = ∑(Grade Point of Subject×Credit Hours of subject)/ ∑Credit Hours of All Subject
Example of CGPA Calculation with 5 Grading Scale:
Let’s assume that you have the following grades and credit hours for 4 subjects:
| Subject | Grade (%) | Grade Point (Out of 5) | Credit Hours |
| Math | 85 | 4.5 | 4 |
| Physics | 75 | 4.0 | 3 |
| Chemistry | 90 | 5.0 | 3 |
| Biology | 70 | 4.0 | 2 |
Step 1: Convert the grades to grade points:
- Math: 85% =4.5
- Physics: 75% = 4.0
- Chemistry: 90% = 5.0
- Biology: 70% = 4.0
Step 2: Calculate the weighted grade points for each subject:
- Math: 4.5×4=18.0
- Physics: 4.0×3=12.0
- Chemistry: 5.0×3=15.0
- Biology: 4.0×2=8.0
Step 3: Sum of the weighted grade points:
18.0+12.0+15.0+8.0=53.0
Step 4: Sum of credit hours:
4+3+3+2=12
Step 5: Calculate CGPA:
CGPA=53.0/12=4.42
Conclusion: CGPA on a 5-point scale = 4.42
Different Indian Universities CGPA calculation techniques
In India, universities follow various methods for calculating CGPA (Cumulative Grade Point Average). These methods can differ on the basis of university and state,. Every university has their own formula and method to convert percentage to CGPA. we took some famous university marking schemes for your better understanding.
1. The University Grants Commission (UGC) Model: UGC has a uniform grading system to standardize CGPA across universities, particularly for those universities who choose to follow Choice Based Credit System (CBCS). The UGC model uses the following grading scale:
| Grade | Grade Point (GPA) |
| O (Outstanding) | 10 |
| A+ (Excellent) | 9 |
| A (Very Good) | 8 |
| B+ (Good) | 7 |
| B (Average) | 6 |
| C (Below Average) | 5 |
| P (Pass) | 4 |
| F (Fail) | 0 |
Formula: CGPA=∑(Grade Point of Subject×Credit Hours of subject)/ ∑Credit Hours of All Subject
Example, if in a university use following system,
| Subject | Grade Point (GPA) | Credit Hours |
| Mathematics | 9 | 4 |
| Physics | 8 | 3 |
| Chemistry | 7 | 3 |
| Computer Sci | 10 | 4 |
CGPA=(9×4)+(8×3)+(7×3)+(10×4)/4+3+3+4
=36+24+21+40/14
=121/14≈8.64
2. Anna University, Chennai (CGPA Calculation): Anna University, one of the most prominent technical universities in India, uses the Grade Point Average (GPA) and CGPA system. The grading scale used by Anna University is as follows:
| Grade | Grade Point (GPA) |
| O | 10 |
| A+ | 9 |
| A | 8 |
| B+ | 7 |
| B | 6 |
| C | 5 |
| P | 4 |
| F | 0 |
The CGPA is calculated after the completion of each semester, and the grades are weighted according to the number of credit hours assigned to each course.
Formula: CGPA=∑(Grade Point of Subject×Credit Hours of subject)/ ∑Credit Hours of All Subject
Anna university uses the same method which is used by UGC, but they use slightly different criteria for awarding specific grades based on exam performance.
3. JNTU (Jawaharlal Nehru Technological University): This university follows a 10-point grading system to calculate CGPA. The grading scale used by JNTU is:
| Grade | Grade Point (GPA) |
| O | 10 |
| A+ | 9 |
| A | 8 |
| B+ | 7 |
| B | 6 |
| C | 5 |
| P | 4 |
| F | 0 |
CGPA Calculation follows the weighted average of grade points, taking into account the credit hours for each subject.
4. Delhi University (DU) Grading System: Delhi University uses a 7-point scale for grading system
| Grade | Grade Point (GPA) |
| A+ | 4.0 |
| A | 3.7 |
| B+ | 3.3 |
| B | 3.0 |
| C+ | 2.7 |
| C | 2.3 |
| P | 2.0 |
| F | 0 |
For DU, the CGPA is calculated by averaging the grade points across all semesters. The final CGPA is rounded to two decimal places.
5. BITS Pilani (Birla Institute of Technology and Science): BITS Pilani follows a 10-point scale and calculates CGPA based on the following grading system:
| Grade | Grade Point (GPA) |
| O | 10 |
| A | 8.5 |
| B | 7.5 |
| C | 6.5 |
| D | 5.5 |
| E | 4.5 |
| F | 0 |
CGPA is calculated at the end of each semester and is computed using the weighted average of the grades in all subjects.
Formula:
CGPA=∑(Grade Point of Subject×Credit Hours of subject) /∑Credit Hours of All Subject
6. VIT University (VIT): VIT follows a 10-point scale and uses the following grading system:
| Grade | Grade Point (GPA) |
| O | 10 |
| A+ | 9 |
| A | 8 |
| B+ | 7 |
| B | 6 |
| C | 5 |
| P | 4 |
| F | 0 |
VIT also uses a weighted CGPA calculation system, where each subject’s grade point is multiplied by its credit value and the result is summed up.
7. IITs (Indian Institutes of Technology): IITs use a 10-point scale for grading, and each IIT may have a slightly different system for CGPA calculation, but most of them follow a weighted average method.
| Grade | Grade Point (GPA) |
| O | 10 |
| A+ | 9 |
| A | 8 |
| B+ | 7 |
| B | 6 |
| C | 5 |
| P | 4 |
| F | 0 |
CGPA is calculated using the weighted average formula:
CGPA=∑(Grade Point of Subject × Credit Hours of subject) / ∑Credit Hours of All Subject
Count the backlogs and repeated courses while calculating the final CGPA.
