CGPA Calculation in Nigeria Universities

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CGPA Calculation in Nigeria Universities


CGPA Calculation in Nigeria Universities: Are you aware that you can still graduate with a first-class degree even if your CGPA as at the end of 100L is less than a second class lower? Oh, yes, you can.

The problem most students are having is that they have been wrongly informed. Sad!!!

Every level in a Nigeria university system matters but some levels carry a higher credit than others. For instance, 100L in almost all Nigerian university carries the least GPA.

That’s why even if your CGPA in 100L is very low, you can still graduate with a first-class.

However, it’s sad how most students allowed their 100L CGPA to control and determine how they would graduate from a university which is not supposed to be so.

GPA and CGPA Meaning

We also discovered that a lot of students and aspirants don’t know the meaning of GPA or CGPA and how to calculate it, even if it is for predictive future.

As a student at the university that has great goal and potential, it is very important you learnt how to calculate your CGPA so that you can always know where you are and how to adjust your ways if need to graduate with a good CGPA.

Though knowing how to calculate your CGPA should not in any way deter you from achieving your goals as the manner of some persons are, when they find our that their CGPA is so low, they tend to lose hope and become lackadaisical with their academic work.

Also, as an aspirant, it is very important for you to learn how to know the meaning of GPA and CGPA and how they are calculated as it will help you in modelling your thoughts and plans towards your university dreams. 

So in this article, we are going to be answering the questions of many students. In fact, everything you need to know about GPA or CGPA calculations in Nigerian universities will be outrightly dealt with.

So, all you have to do is to carefully read this article and kindly share it with your friends using the share buttons below.

Also, don’t forget to leave a comment when you are done reading.

What are GPA and CGPA?

GPA simply means Grade Point Average. That is a measure of a student’s academic achievement per semester at a college or university. It is calculated by dividing the total number of acquired Grade Points by the total number of Course Unit received.

CGPA means Cumulative Grade Point Average. Grade letter may differ. While some higher institutions make use of ABCDEF, others prefer ABCDF. Polytechnics make do of AB BC in their grading.

But in this post, I will make use of ABCDEF for CGPA grading.

Why is GPA important

Many aspirants most important have always asked the importance of GPA or CGPA, even some students I know always ask the same question.

When you’re enrolled in a Bachelor’s or Master’s programme, your GPA is easily one of the most important numbers to keep an eye on.

Your GPA, or Grade Point Average, is a number that indicates how well or how high you scored in your courses on average. It determines what you will graduate with eg First Class, Second Class Upper, Second Class Lower etc

It’s meant to score you (usually on a GPA scale between 0.0-4.0 for a 4.0 scale and between 0.0-5.0 for a 5.0 GPA scale) during your studies and shows whether your overall grades have been high or low.

This number is then used to assess whether you meet the standards and expectations set by the degree programme or university.

How Does a GPA or CGPA work?

In the same way that your professors and instructors give you a grade to evaluate your progress or success in their course, your Grade Point Average is a score used to evaluate your success during the entirety of your degree programme.

Your average GPA is a number that shows what you typically scored in your classes throughout the semester, term, and year.

Your GPA scores can go up and down throughout your time at the university and will change according to how much you improve your overall grades (or, in some cases, how much you fell behind).

CGPA Grade Scale

There is considerable variation in the grading system in the Nigerian Universities today.

The University of Benin and the University of Lagos, they use a grading scale of 5.0. Meanwhile, the University of Ibadan uses a grading scale of 4.0.

In Nigeria, there is a considerable difference in the grading scale used by different institutions.

You can check the  Colledge of Education CGPA grading System and the Polytechnics CGPA Grading System.

How will a good GPA help you?

  • A good GPA makes you eligible to sit for all top colleges throughout the world.
  • It puts you on the top of your VC’s list of good students.
  • It increases your chances of getting better Grants and Scholarship.
  • You graduate with good honours.
  • Getting a good GPA is not easy, you would have learned a lot during the process.

Difference between GPA and CGPA

To understand the differences between GPA and overall CGPA, you must first know that they both refer to the average grades of a student. The difference is that the GPA covers shorter periods, like a term or a semester.

While CGPA refers to the average grades obtained by a student throughout his entire academic experience.

This means it includes grades from all terms and semesters.

Also, CGPA can be used when talking about a session too, like at the end of a particular level, you could ask what is the CGPA for 100L etc.

GPA percentage and conversion scales

The percentage needed in any given course to achieve a certain grade and the assignment of GPA point values varies from school to school, and sometimes between instructors within a given school.

In Nigeria, according to NUC, the standard grading scale in Nigeria is 5.00. I am also aware that some universities still makes use of a 4.00 grading scale.

Due to popular request, I am going to make use of a 5.00 GPA scale to explain how to calculate GPA and CGPA because it is the most widely used grading scale in Nigeria universities.

If your school uses 4.00, the calculation is the same.

You can learn more about 4.00 GPA calculation here.

If you’re not sure of your school’s GPA scale as of yet, don’t worry, just learn how the calculation is done and you will be fine when you finally know-how.

Classification of degrees

I know most aspirants are very keen on knowing what they have to score to graduate with a first-class. Well, you will see the CGPA of different honours below.

Statistics show that 90% of 100L students in a university always want to graduate with a first-class but after they see their 100L result, they change their goals.

Well, 100L CGPA has little effect on what you should graduate with as a student.

Here is the classification of degrees:

  • The cumulative GP for First Class Honours is 4.5 – 5.00
  • Second Class Honours (Upper Division) is 3.5 – 4.49
  • The cumulative GP for Second Class Honours (Lower Division) is 2.5 – 3.49
  • The cumulative GP for Third Class Honours is 1.5 – 2.49
  • Also, cumulative GP for Pass Honour is 0.5-1.49
  • Below that is FAIL.

Some schools like the University of Ibadan will not give a degree for Pass or Fail.

To start with, on the table

  • CU — Represent Course Unit (also means credit hour)
  • EXS — Represent Examination score
  • GD — Represent Grading Letter (A, B, C, D, E, F)
  • GP — Represent Grading Point (5, 4, 3, 2, 1,0)
  • QP — Represent Quality Point (GP multiply by CU)

This is the official grading scale in Nigeria and that is what I will be using to explain to you how to calculate GPA and CGPA.

Percentage Score- is actually your examination score of a particular course. That’s to say if you write an examination where it is marked over 100, then, if you score 72 out of 100, then your percentage score is 72%.

Grade Letter- Every percentage score has a grade letter attached to it. You will see what I mean from the table below.

Grade Point- This is needed when you are calculating your GPA or CGPA. That’s to say, every grade letter has its own grade point. You will understand it properly as we move on.

Percentage ScoreGrade LetterGrade Point
70 – 100A5
60 – 69B4
50 – 59C3
45 – 49D2
40 – 44E1
0 -39F0

GPA or CGPA Grade Calculation Example

Now follow the example below.

Mind you, from the example below, we’ll be using a department in the faculty of engineering, UNIBEN as a case study. This is because we want to give you a real practical example you can relate with.


Let start with First Semester 100 Level GPA
Department: Mechanical Engineering

Course CodeCourse Unit(CU)Examination ScoreGrade LetterGrade Point(GP)Quality Point (CU*GP)
PHY 109259C32*3=6
 SUM=23   SUM=100

If you look at the table very well, you will understand what I have done.

Since we have only done for the first semester, then we should be talking of GPA only. We can ask for CGPA after the second semester.

Now, how do we get the GPA?

The is calculated as the ratio between the Sum of the Quality Point and the Sum of the Course Unit, that ‘s  Sum of Quality Point/Sum of Course Unit.

Thus, from the table above, GPA is (100/23)=4.35


Now second Second Semester 100 Level GPA
Department: Mechanical Engineering

Course CodeCourse Unit(CU)Examination ScoreGrade LetterGrade Point(GP)Quality Point (CU*GP)
 SUM=22   SUM=107

You can see that I intentional make the second-semester result to be very beautiful that it has only one B.

This is how the result for most students are.

Now just like first-semester calculation, to get the GPA, we also divide the Quality Point/Course Unit.

Thus, the GPA is (107/22)= 4.86

Lastly, to get the CGPA for 100L, it is to add the GPAs for first and second semester and divide it by 2.

Thus, CGPA is ((4.35+4.86)/2)= 4.61

From all our analysis, it means that if a student should make a CGPA of 4.61 in 100L, then that student is a first-class student from 100L.

However, that’s all for 100L and it continues for the other levels too.

CGPA in Nigeria University

But I strongly believe this is well explained above but if for any reason you do not understand what I have explained above, please let me know through the comment session below and I will respond to any issue you may have to the best of my knowledge as soon as possible.

Please note – If you have any question that has to do with carryover or a special case, please let me know in the comment session below and I will do my best to attend to you as soon as possible.

Nonetheless, I have used a CGPA scale of 5.0 and I want you to know that it’s the same calculation for a CGPA scale of 4.0 as well.

If you have any issue or concerns, kindly comment below and it will be attended to ASAP. However, if you want to discuss with an admin on WhatsApp or Telegram, please visit the Contact US Page. Thank you

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