Your GPA covers one semester. Your CGPA, the cumulative grade point average, covers everything so far, and it is the number that decides your degree class.
Add each semester, list your courses with their grades and credit units, and the calculator shows the GPA for every semester and your overall CGPA. It all happens in your browser, so nothing about your results leaves your phone.
How to use the CGPA Calculator Nigeria#
- Pick your scale. Choose 5.0 or 4.0, depending on your university.
- Add your semesters. Press Add semester for each one you have finished. You can add as many as you need.
- Add your courses. For each course choose the grade and type the credit units. A course name or code is optional.
- Read your CGPA. Each semester shows its GPA, and the result panel shows your overall CGPA and degree class.
Already have a CGPA from earlier years? Enter it, with the credit units behind it, under the semesters and the new semesters are added on top.
How GPA and CGPA are worked out#
Say you score A in a 3-unit course, B in a 3-unit course and C in a 2-unit course on the 5.0 scale. Quality points are 15 + 12 + 6 = 33 over 8 units, so your GPA is 4.13. CGPA works the same way, except the quality points and units of every semester go into one total before you divide. It is not the average of your semester GPAs, because a semester with more units counts for more.
Grade points and degree classes#
On the 5.0 scale, A is 5, B is 4, C is 3, D is 2, E is 1 and F is 0. On the 4.0 scale, A is 4, B is 3, C is 2, D is 1 and F is 0. The usual classes on the 5.0 scale are:
| Class (5.0 scale) | CGPA |
|---|---|
| First Class | 4.50 to 5.00 |
| Second Class Upper | 3.50 to 4.49 |
| Second Class Lower | 2.40 to 3.49 |
| Third Class | 1.50 to 2.39 |
| Pass | 1.00 to 1.49 |
Universities on the 4.0 scale use different cut-offs, and some change the lower grades. Treat the class shown here as a guide and check your school’s regulations.
A worked example#
A student finishes two semesters on the 5-point scale. In the first, they get A in a 3-unit course, B in a 3-unit course, C in a 2-unit course, A in a 4-unit course and B in a 2-unit course. Quality points are 15 + 12 + 6 + 20 + 8 = 61 over 14 units, a GPA of 4.36. In the second, they get B (3 units), A (3 units), B (2 units) and C (3 units): 12 + 15 + 8 + 9 = 44 over 11 units, a GPA of 4.00. The CGPA is (61 + 44) ÷ (14 + 11) = 105 ÷ 25 = 4.20, which is a Second Class Upper.
Working out what you need#
To reach a target, rearrange the formula. The GPA you need in the remaining units is (target × total units − current CGPA × units so far) ÷ remaining units. With 90 units done at 3.80 and 60 to go, a final CGPA of 3.50 needs an average of 3.05 over the remaining units. A First Class (4.50 or higher) would need 5.55, which is above the 5.00 maximum, so it is out of reach. Run the numbers early, since a target that is possible in year two may not be in year four.
The earlier your semesters, the more units sit behind your CGPA, so each new semester moves it less. Retaking a failed course, where your university allows it, usually helps most.
Check your school’s rules#
Most Nigerian universities use the 5-point scale above, but some use 4 points, and some treat repeats, carry-overs and withdrawn courses differently. A grade of F earns no points but its credit units still count in the divisor in most schools. The class of degree is read from the final CGPA, and employers, the NYSC scheme and postgraduate programmes often set cut-offs. A Second Class Upper is a common requirement for graduate roles and master’s programmes. Your department’s handbook and the university senate rules are the final authority, and this calculator is a planning tool. See also the attendance calculator.
Frequently asked questions#
Cumulative grade point average. It averages your grade points across all your courses, weighted by credit units.
GPA is for one semester. CGPA is for all semesters so far.
Multiply the grade point of each course by its credit units, add the results, then divide by the total credit units across all semesters. On the 5-point scale, A is 5, B is 4, C is 3, D is 2, E is 1 and F is 0.
No. Most use the 5.0 scale and some use 4.0. Choose the one your school uses, and check its grading table for the exact points.
On the usual 5-point scale, 4.50 and above. A Second Class Upper starts at 3.50, a Second Class Lower at 2.40, a Third Class at 1.50 and a Pass at 1.00. Check your own school’s rules, since boundaries can vary slightly.
Yes. Add the courses you expect and the grades you hope for to see what your CGPA would become. It is a good way to test a target before the results come out.
In most schools it does. An F earns no points, but its credit units still count in the total, so it pulls your CGPA down until you retake the course.
No. Everything is worked out in your browser. If you accept all cookies, the calculator remembers what you entered on this device only.