Whether you're applying to graduate schools, converting grades for international transcripts, or just trying to understand your academic standing, GPA and CGPA conversions are essential student skills. The challenge is that different countries and universities use completely different grading scales — and converting between them requires specific formulas.

GPA vs CGPA: What's the difference?

• GPA (Grade Point Average): Your average grade for a single semester or term. Calculated by dividing total grade points earned by total credit hours attempted.
• CGPA (Cumulative Grade Point Average): Your overall average across ALL semesters combined. This is the number that appears on your final transcript and degree certificate.
• In essence: GPA is per-semester, CGPA is career-cumulative. Your CGPA is a weighted average of all your semester GPAs.

Common conversion formulas

Converting Indian CGPA (10-point) to US GPA (4.0)

There's no universally accepted direct conversion, but the most widely used approximation is: First convert CGPA to percentage (CGPA × 9.5), then map the percentage to the 4.0 scale. Generally: 90–100% ≈ 4.0, 80–89% ≈ 3.3–3.9, 70–79% ≈ 2.7–3.2, 60–69% ≈ 2.0–2.6. Note that many US universities perform their own evaluation and may not use these generic mappings.

How to calculate your GPA step by step

1. List all courses taken in the semester with their credit hours and letter grades.:
2. Convert each letter grade to its grade point value (A=4.0, A-=3.7, B+=3.3, B=3.0, etc.).:
3. Multiply each course's grade point by its credit hours to get quality points.:
4. Sum all quality points and divide by total credit hours attempted.:
5. Example: Math (4 credits, A=4.0) + English (3 credits, B+=3.3) + Science (4 credits, A-=3.7) = (16 + 9.9 + 14.8) / 11 = 3.7 GPA.

For CGPA, repeat this process across all semesters combined. Include every course from every term in a single calculation. Failed courses and retakes follow your university's specific policy — some replace the old grade, others average both attempts.