What is CGPA, and who needs a CGPA calculator?
CGPA, or Cumulative Grade Point Average, is the average of the grade points you earn across subjects, weighted by each subject's credits. Many Indian universities and colleges report results this way instead of marks, and CBSE has used it for Class 10.
The trouble starts when a form asks for percentage. Job applications, campus placements, scholarships, competitive exam eligibility and higher-study admissions often set a minimum such as 60%. This tool has three modes: CGPA from credits and grade points, percentage from marks, and a two-way CGPA and percentage converter, with scales from 4 to 12.
Formula used
- CGPA = Σ (credits × grade points) ÷ Σ credits
- 10-point scale: Percentage = CGPA × 9.5, and CGPA = Percentage ÷ 9.5
- Other scales: Percentage = (CGPA ÷ scale) × 100
- By marks: Percentage = total marks obtained ÷ total maximum marks × 100
Worked example
A student has four subjects: Maths (4 credits, grade point 9), Physics (4 credits, 8), Chemistry (3 credits, 7) and English (2 credits, 10).
- Weighted points = 36 + 32 + 21 + 20 = 109
- Total credits = 4 + 4 + 3 + 2 = 13
- CGPA = 109 ÷ 13 = 8.38
- Percentage = 8.3846 × 9.5 = 79.7%
Marks example: five papers of 100 marks each, scoring 82, 74, 91, 68 and 85. Total = 400 out of 500, so the percentage is 80% and the CGPA is 80 ÷ 9.5 = 8.42. For a quick conversion, a CGPA of 8.0 gives 76%, and 3.2 on a 4-point scale gives 80%.
Frequently asked questions
Is multiplying CGPA by 9.5 the right formula for my university?
It is widely used in India, including by CBSE for Class 10, but not every university follows it. Some use their own multiplier or a conversion table. Check your university's rule, or ask for an official conversion letter if a recruiter needs one.
What is the difference between SGPA and CGPA?
SGPA is the grade point average of a single semester. CGPA covers all semesters together, weighted by credits. To get your CGPA here, enter the subjects of every semester in the Grade Points tab.
Why does my result differ from my marksheet?
Marksheets may round differently, leave out non-credit or audit courses, or apply a university-specific formula. Make sure the credits and grade points you enter match your marksheet exactly.
How do I convert percentage to CGPA?
Open the CGPA and Percentage tab and type your percentage. On a 10-point scale the tool divides it by 9.5, so 76% becomes a CGPA of 8.0. Editing either box updates the other.
How do the other grading scales work?
Choose 4, 4.3, 4.5, 5, 7, 10 or 12 to match your institution. For scales other than 10, percentage is simply CGPA divided by the scale, times 100, so 3.2 on a 4-point scale is 80%.
Limitations and accuracy
The 9.5 factor is an approximation, not a law, so results are estimates. The tool does not know about backlogs, grace marks, improvement exams or non-credit courses. Linear conversion on 4-point and similar scales will not match official US GPA evaluations used for foreign admissions. For anything official, rely on the percentage or conversion certificate issued by your university.