CGPA / Percentage Calculator
Enter the grade point and credit hours for each subject to calculate your CGPA and equivalent percentage.
CGPA
8.41
Percentage
79.89%
Already have a CGPA? Convert it directly
Uses CBSE's rule, Percentage = CGPA × 9.5, from CBSE Circular No. 24 of 2010. It is CBSE-specific: other boards and many universities publish their own formula or table, so use theirs where they give one.
Percentage (CBSE × 9.5)
71.25%
How to use this calculator
The calculator opens with the three subjects from the worked example below. Replace them with your own: for each subject, enter the grade point and credit hours, add or remove rows as needed, and click Calculate to check every row is complete. The result shows your CGPA and the equivalent percentage. If you already know your CGPA, the box under the calculator converts it to a percentage directly.
What is CGPA?
CGPA (Cumulative Grade Point Average) summarizes academic performance across all your subjects as a single number on a fixed scale — commonly 0 to 10 in Indian universities. Unlike a simple average, CGPA weights each subject's grade point by its credit value, so a subject worth more credits has proportionally more influence on your overall average than a lighter elective.
How CGPA and percentage are calculated
CGPA = Σ(Grade Point × Credits) ÷ Σ(Credits) — the sum of each subject's grade point multiplied by its credits, divided by total credits. The percentage then comes from CBSE's conversion, which many Indian universities also use: Percentage = CGPA × 9.5. The calculator applies it automatically.
Worked example
Three subjects — 8.5 grade points at 4 credits, 9.0 at 4 credits, and 7.5 at 3 credits — give a weighted sum of (8.5×4) + (9.0×4) + (7.5×3) = 92.5 over 4 + 4 + 3 = 11 total credits, for a CGPA of 92.5 ÷ 11 ≈ 8.41. Converting to percentage: 8.41 × 9.5 ≈ 79.9%.
Frequently Asked Questions
Is the CGPA × 9.5 formula official or just an estimate?
It originated as an approximate formula published by CBSE for its own 10-point scale, and many Indian universities adopted the same 9.5 multiplier as a convention — but it is not a universal standard. Some universities use a different multiplier or a non-linear conversion table entirely. Always check your specific university's official conversion formula for documents like transcripts or job applications, since the difference can matter for competitive eligibility cutoffs.
What is the difference between SGPA and CGPA?
SGPA (Semester Grade Point Average) covers a single semester, while CGPA (Cumulative Grade Point Average) is the credit-weighted average across all semesters completed so far. CGPA is calculated the same way as SGPA — just with every subject from every semester included in one weighted average, rather than resetting each term.
Why do I need to enter credits, not just grade points?
Because not every subject counts equally toward your final average. A 4-credit core subject should influence your CGPA more than a 1-credit elective, so each grade point is weighted by its credit value before averaging — a straight (unweighted) average of grade points would overstate the impact of minor subjects.
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