Example:

Semester 1 SGPA: 8.5
Semester 2 SGPA: 9.0
Semester 3 SGPA: 8.0

Sum of SGPA = 8.5 + 9.0 + 8.0 = 25.5

Number of Semesters = 3

CGPA = 25.5 / 3 = 8.5

CGPA to Percentage

• O grade (9.5+ CGPA): Percentage = (20 × CGPA) - 100
• A+ grade (8.25-9.5 CGPA): Percentage = (12 × CGPA) - 25
• A grade (6.75-8.25 CGPA): Percentage = (10 × CGPA) - 7.5
• B+ grade (5.75-6.75 CGPA): Percentage = (5 × CGPA) + 26.25
• B grade (5.25-5.75 CGPA): Percentage = (10 × CGPA) - 2.50
• C grade (4.75-5.25 CGPA): Percentage = (10 × CGPA) - 2.50
• D grade (4.0-4.75 CGPA): Percentage = (6.6 × CGPA) + 13.6

GPA Scale (Out of 4.0)

Percentage	Grade	GPA Points
90-100%	A	4.0
80-89%	B	3.0
70-79%	C	2.0
60-69%	D	1.0
Below 60%	F	0.0

Note: This is the standard 4.0 scale used in many universities, especially in the United States. Some institutions may use variations like A+, A-, B+, etc. with corresponding GPA values.

SGPA/CGPA Scale (Out of 10.0)

Percentage	Grade	Grade Points	Classification
90-100%	O (Outstanding)	10	First Class with Distinction
80-89%	A+ (Excellent)	9	First Class
70-79%	A (Very Good)	8	First Class
60-69%	B+ (Good)	7	Second Class
50-59%	B (Above Average)	6	Second Class
40-49%	C (Average)	5	Pass Class
Below 40%	F (Fail)	0	Fail

Note: This 10-point grading system is commonly used in Indian universities and many other institutions worldwide. The exact percentage ranges may vary slightly between universities.

Formulas

Percentage Calculation:

Percentage = (Obtained Marks / Total Marks) × 100

GPA Calculation (4.0 scale):

GPA = Sum of (Grade Points × Credit Hours) / Total Credit Hours

Example: If you got A (4.0) in a 3-credit course and B (3.0) in a 4-credit course:
GPA = (4.0 × 3 + 3.0 × 4) / (3 + 4) = (12 + 12) / 7 = 24 / 7 ≈ 3.43

SGPA Calculation (10.0 scale):

SGPA = Sum of (Grade Points × Credits) / Total Credits

Example: If you got 9 in a 4-credit course and 7 in a 3-credit course:
SGPA = (9 × 4 + 7 × 3) / (4 + 3) = (36 + 21) / 7 = 57 / 7 ≈ 8.14

CGPA Calculation (10.0 scale):

CGPA = Sum of (SGPA × Semester Credits) / Total Credits Across All Semesters

Example: Semester 1 SGPA 8.5 (20 credits), Semester 2 SGPA 7.8 (22 credits):
CGPA = (8.5 × 20 + 7.8 × 22) / (20 + 22) = (170 + 171.6) / 42 ≈ 8.13

Important Notes:

• Some universities calculate CGPA as a simple average of SGPAs rather than credit-weighted
• Always check your institution's specific grading policy
• Conversion between different grading systems is approximate
• This conversion is based on SPPU 2019 rulebook and Circular No. 322/2020