CGPA Calculator
Cumulative GPA tracks every completed semester, not just the current one, which makes it slow-moving and easy to misjudge. Each new term blends into the record in proportion to its credits: a strong 18-credit semester can lift a 3.2 by a few points, while a light elective barely moves it. This calculator performs that blend for the US 4.0 and Indian 10.0 scales and shows the change — what a term is actually worth.
Enter values
Results
- Blended CGPA (4.0 scale)
- 3.25
- Total credits after this semester
- 78
- Change vs current CGPA
- +0.05
How is the CGPA calculated?
Choose your university's scale, enter the CGPA you have banked, the credits behind it, and this semester's GPA with its credit count. The calculator credit-weights the old record against the new semester and returns the blended CGPA to two decimals, the new total of credits, and the signed difference from your current CGPA. Run the numbers again with a different semester GPA to see the range of outcomes a single term can produce.
Formula
blended = (CGPA × credits done + semester GPA × semester credits) ÷ (credits done + semester credits) where: CGPA = cumulative GPA before this semester credits done = credit hours already completed semester GPA = GPA of the term added semester credits = credit hours of that term Works on 4.0 and 10.0 scales — both inputs must sit on one scale.
Example
Current CGPA: 3.2 over 60 credits · This semester: 3.4 over 18 credits Banked points = 3.2 × 60 = 192 Added points = 3.4 × 18 = 61.2 Blended = (192 + 61.2) ÷ 78 = 253.2 ÷ 78 = 3.2462, shown as 3.25 The semester lifts the CGPA by just 0.05 because 18 credits are only a quarter of the 78 you will now hold.
Things to remember
Because completed credits weigh it down, a CGPA is hardest to move in the final semester — worth knowing rather than resenting. Aim the effort where credits are heaviest, and remember that committees read the transcripts behind that single figure. Enter semester GPAs here before assuming a target is out of reach.
Frequently Asked Questions
How do I calculate CGPA after one semester?
Credit-weight everything: multiply each semester's GPA by its credits, add the grade points together, and divide by total credits. A 3.4 over 18 credits added to a 3.2 over 60 gives (192 + 61.2) ÷ 78, a blended 3.25 that you can check against your own transcript.
What is the difference between GPA and CGPA?
GPA measures one term's performance; CGPA is the cumulative figure across every completed term, weighted by credits. A single bad semester lowers the CGPA only in proportion to its share of total credits, so its effect fades as the record grows.
How is CGPA converted to percentage in Indian universities?
Most Indian institutions publish their own rule — a common one multiplies CGPA by 9.5, others by 10, to quote a percentage. Check your university's exact conversion, because employers and forms expect the official figure rather than a generic one.
Can one semester significantly change my CGPA?
Only if it carries a large share of credits or a GPA far from your current one. A 24-credit semester at 3.8 can move a 3.2 CGPA by roughly 0.15; a 6-credit elective moves it by less than 0.05 — the credit weight decides, not the grade alone.
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