GPA and CGPA both describe academic averages, but they are not always used for the same period. In many institutions, GPA refers to one semester or term, while CGPA means the cumulative average across several terms. The labels can vary, so your institution's handbook remains the final reference.
GPA usually describes one period
A semester GPA combines the grade points earned in the courses from that semester, weighted by their credits. If you take 15 credits in one term, only those 15 credits are normally part of that term GPA.
CGPA combines several periods
CGPA, cumulative GPA, or overall GPA usually combines all GPA-bearing courses or semesters included by the institution. Because courses and semesters can have different credit totals, CGPA should be weighted by credits rather than calculated as a simple average of semester GPA numbers.
Why a simple average can be wrong
Imagine semester 1 has a GPA of 3.20 over 15 credits and semester 2 has a GPA of 3.60 over 18 credits. A simple average gives 3.40, but the second semester contains more credits.
Calculate weighted points instead: 3.20 × 15 = 48.00 and 3.60 × 18 = 64.80. Add them to get 112.80, then divide by 33 total credits. The result is about 3.42.
| Term | GPA | Credits | Weighted points |
|---|---|---|---|
| Semester 1 | 3.20 | 15 | 48.00 |
| Semester 2 | 3.60 | 18 | 64.80 |
For a single term, use the GPA Calculator. To combine semesters, use the CGPA Calculator.
Course-level CGPA calculation
If you have every course grade and credit, you can also combine all course quality points directly: add grade points × credits for every included course, then divide by the total included credits. This is often the clearest method when semester summaries are incomplete.
Policies that can change the result
- Retaken courses: an institution may replace the old grade, average attempts, or count both.
- Transfer credits: credits may transfer without the original grade affecting CGPA.
- Pass/fail modules: these may earn credit without entering the grade-point average.
- Different programmes: a school may calculate programme GPA, major GPA, and overall GPA separately.
- Scale changes: do not combine GPAs from different grading scales without an official conversion method.
When should you use GPA versus CGPA?
Use the figure requested by the form or institution. A scholarship might ask for current semester GPA, while a transcript may display cumulative GPA. If a requirement simply says “GPA” but you have several versions, check the instructions rather than guessing which one is expected.
Quick questions
Is CGPA just the average of my semester GPAs?
Only when every semester carries the same GPA-bearing credits and the institution uses that method. Credit weighting is safer when semester loads differ.
Can CGPA go down after a good semester?
If the new semester GPA is above the previous cumulative average, it would normally pull the cumulative average upward; if it is below, it would normally pull it downward. The size of the change depends on how many credits are already accumulated.
Why does my portal show a different number?
Check the institution's rules for excluded courses, repeats, transferred credits, and rounding. A calculator can reproduce the arithmetic, but only the school can define which records count.