Do you know How to Calculate GPA and CGPA ? To calculate your GPA, multiply each course’s grade point by its credit units, add the results, then divide by your total credit units. For CGPA, do the same across all semesters. Most Nigerian universities use the 5-point scale, where an A is 5 points.
You’ve checked your result. The next question is usually “What does this mean for my CGPA?” This guide shows you how to work it out, what your class of degree is, and what to do next.
GPA vs CGPA: What’s the Difference?
CGPA is the credit-unit-weighted average of grade points across all completed courses. GPA (Grade Point Average): your average for one semester. while CGPA (Cumulative Grade Point Average): your average across all semesters so far.
The 5-Point Grading Scale
Nigerian universities use a 5-point CGPA scale regulated by the National Universities Commission (NUC), where an A is 5.0 points for scores of 70 to 100. The standard scale is:
| Score | Grade | Grade point |
|---|---|---|
| 70 to 100 | A | 5 |
| 60 to 69 | B | 4 |
| 50 to 59 | C | 3 |
| 45 to 49 | D | 2 |
| 40 to 44 | E | 1 |
| 0 to 39 | F | 0 |
In Nigeria institution some schools use slightly different boundaries, and some polytechnics and a few private universities use a 4-point scale. Kindly check your own university handbook where the grading point is documented before you calculate.
How to Calculate GPA and CGPA Step by Step
GPA
- List your courses with their credit units and grades.
- Convert each grade to a grade point using the table above.
- Multiply the grade point by the credit units for each course. This gives the quality points.
- Add all the quality points.
- Add all the credit units.
- Divide total quality points by total credit units. That is your GPA.
Formula: GPA = total quality points ÷ total credit units
Worked example
| Course | Units | Score | Grade | Grade point | Quality points |
|---|---|---|---|---|---|
| MTH101 | 3 | 72 | A | 5 | 15 |
| CHM101 | 3 | 65 | B | 4 | 12 |
| PHY101 | 3 | 55 | C | 3 | 9 |
| GST101 | 2 | 48 | D | 2 | 4 |
| ENG101 | 2 | 38 | F | 0 | 0 |
| Total | 13 | 40 |
GPA = 40 ÷ 13 = 3.08
How to Calculate GPA and CGPA Step by Step
CGPA
Add this semester’s quality points and units to your previous totals.
Formula: New CGPA = (previous CGPA × previous units + this semester’s quality points) ÷ (previous units + this semester’s units)
Example: your previous CGPA is 3.40 over 52 units, and this semester you earned 40 quality points over 13 units.
- Previous quality points: 3.40 × 52 = 176.8
- New total: 176.8 + 40 = 216.8
- New units: 52 + 13 = 65
- New CGPA = 216.8 ÷ 65 = 3.34
Your CGPA dropped slightly from 3.40 because the F and the lower grades pulled the average down.
How do you calculate CGPA for 100 level students?
In 100 level, your CGPA after first semester equals your first-semester GPA. After second semester, add both semesters’ quality points and divide by both semesters’ total credit units. Example: (50 + 46) ÷ (14 + 14) = 96 ÷ 28 = 3.43.
How do you calculate CGPA for 100 level students?
In 100 level, your CGPA after first semester equals your first-semester GPA. After second semester, add both semesters’ quality points and divide by both semesters’ total credit units. Example: (50 + 46) ÷ (14 + 14) = 96 ÷ 28 = 3.43.
- First semester: your CGPA is your GPA.
- Second semester: add the quality points and credit units from both semesters.
- Divide total quality points by total credit units.
Use the method given above to answer this question, you are asking.
How do you calculate CGPA on a 5.0 scale?
To calculate CGPA on a 5.0 scale, multiply each course’s grade point (A = 5, B = 4, C = 3, D = 2, E = 1, F = 0) by its credit units, add the results across every semester, then divide by your total credit units.
Formula: CGPA = total quality points ÷ total credit units
What CGPA is Second Class Upper in Nigerian universities?
Second Class Upper in Nigerian universities is a CGPA of 3.50 to 4.49 on the 5-point scale. It is also called 2:1 or Upper Second, and it sits between First Class (4.50 to 5.00) and Second Class Lower (2.40 to 3.49).
These are the NUC bands used on the 5-point scale. Bands can vary slightly by school, so confirm them in your academic regulations.
What does 2:1 mean in university?
2:1 means Second Class Upper Division, also called Upper Second. In Nigerian universities it is a CGPA of 3.50 to 4.49 on the 5-point scale. In the UK, it usually means a mark of 60 to 69%.
| Label | Class | Nigerian CGPA |
|---|---|---|
| First | First Class | 4.50 to 5.00 |
| 2:1 | Second Class Upper | 3.50 to 4.49 |
| 2:2 | Second Class Lower | 2.40 to 3.49 |
| Third | Third Class | 1.50 to 2.39 |
What to Do After Checking Your Semester Result
If your result is good: check your CGPA, plan next semester’s registration, and look at scholarships or internships.
If you have a carryover (F or a failed course): look up your school’s rules in the handbook. Find out whether you must re-register the course first and how many units you can take next semester.
If a score is missing or looks wrong: contact the course lecturer first, then your head of department or exams office. Do it quickly and keep evidence, such as your script number, matric number and a screenshot of the result.
If your CGPA is low: check your school’s minimum for staying in good standing. You can talk to your course adviser about a plan, and if you’re thinking about changing course or transferring, read our guides on transferring to another university and changing course.
If you need proof of your result: ask your department about an official transcript or result verification, which scholarship and job applications often require.
Frequently Asked Questions
How do I calculate my GPA?
Multiply each course’s grade point by its credit units, add the results, and divide by your total credit units.How do I calculate my CGPA?
Use all your quality points and units from every semester so far, or use the formula above to add this semester to your previous CGPA.What is the difference between GPA and CGPA?
GPA covers one semester. CGPA covers all semesters so far.What CGPA is Second Class Upper?
3.50 to 4.49 on the 5-point scale.What CGPA is First Class?
4.50 to 5.00.Is an A always 5 points?
On the 5-point scale, yes. On a 4-point scale it is different, so check your school’s system.Does an F affect my GPA?
Yes. It counts as zero points but still adds its credit units to the total, which lowers your GPA.Can I graduate with a carryover?
Usually not until you clear it, but rules vary, so check your school’s handbook.
