What CGPA means
CGPA stands for Cumulative Grade Point Average. It summarizes your performance across every semester so far, as a single number on your university’s scale, commonly 4.0, 5.0 or 10. Employers, scholarship committees and graduate programs often ask for it.
Because semesters carry different numbers of credit hours, CGPA is a weighted average, not a simple one. This CGPA calculator does that weighting for you and shows every step.
The formula
CGPA = Σ(Semester GPA × Credit hours) ÷ Σ Credit hours
Worked example on a 4.0 scale:
| Semester | GPA | Credit hours | GPA × credits |
|---|---|---|---|
| 1 | 3.50 | 18 | 63.0 |
| 2 | 3.00 | 12 | 36.0 |
| Total | 30 | 99.0 |
CGPA = 99 ÷ 30 = 3.30.
A simple average of 3.50 and 3.00 would give 3.25, which is wrong here, because the first semester had more credits. The calculator always shows the totals and the final division, so you can check the working.
Choosing the scale
Select 4.0, 5.0 or 10 to match your university’s grading. The calculator uses the scale to catch typing mistakes: a semester GPA higher than the scale’s maximum is flagged, instead of silently producing a wrong answer.
If you know your course grades but not your semester GPAs, calculate each semester first with the GPA Calculator, then enter the results here.
Converting CGPA to percentage
There is no single universal formula. Formulas vary by university - check your institution’s official rule. Some institutions multiply the CGPA by a fixed number, some subtract a value first, and some publish a conversion table instead of a formula.
The converter offers a few common forms as starting points:
- A simple proportion, such as CGPA ÷ 4 × 100 on a 4.0 scale.
- Multiplying a 10-point CGPA by a fixed factor.
- Subtracting a value before multiplying, such as (CGPA − 0.75) × 10.
These are labeled as formulas “used by some” systems, not as the rule of any particular university. You can edit both numbers to match the formula printed on your transcript or in your university’s regulations, and the result updates immediately. If your university uses a table rather than a formula, use the table.
For a straightforward marks percentage, such as 450 out of 500, the Percentage Calculator is quicker.
4, 5 and 10 point scales
Universities report grades on different scales:
- 4.0 scale: common in the United States and in many other countries. The top grade is usually 4.0.
- 5.0 scale: used by some universities, where the top grade is 5.0.
- 10-point scale: common in parts of South Asia and elsewhere, where the top grade is 10.
The formula for combining semesters is the same on every scale; only the maximum value changes. Do not mix scales in one calculation. If one of your semesters was graded on a different scale, for example after a transfer, ask your university how it should be converted.
Planning ahead
You can use the calculator to see what CGPA you could reach. Add a row for an upcoming semester, enter its credit hours and the GPA you are aiming for, and watch the CGPA change. This shows how much a single semester can move your average: the more credits you have already completed, the smaller the effect of any one term.
Tips for accurate results
- Use the exact GPA and credits from your results, not rounded figures.
- Leave out semesters that your university excludes, such as audited or pass/fail terms, if its rules say so.
- If you repeated a course, check whether your university replaces the old grade or averages both.
- Keep a copy of the working for your records; the page link saves your inputs.
Privacy and devices
All calculations run in your browser; nothing is sent to a server. The calculator works on phones, tablets and computers, with a numeric keypad on mobile devices and no sign-up.
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