CGPA Calculator Nigeria
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CGPA Calculator Nigeria (5.0 & 4.0 Scale)

Calculate CGPA on 5.0 or 4.0 scale

Used by most Nigerian universities (UNILAG, UI, OAU, etc.)

5.00

Cumulative GPA / 5.0

First Class

Degree Classification

9

Total Credits

45

Quality Points

4.00

US 4.0 GPA

Semester 1

GPA: 5.00
Course (optional)CreditsGrade

9

Credits

45

Quality Pts

5.00

GPA

US 4.0 GPA is an approximation (CGPA × 0.8). Universities may use their own conversion formulas — confirm with your institution or credential evaluator (e.g. WES).

Based on NUC grading standards. Grade point values follow the standard used by UNILAG, UI, OAU, and most Nigerian universities. Verify with your institution's handbook.

How to Use

  1. 1

    Select your university's grading scale — 5.0 (used by most Nigerian universities) or 4.0 (used by some per the NUC 2017 directive).

  2. 2

    For each semester, add your courses with credit units (1-6) and the letter grade you received (A through F). Course names are optional.

  3. 3

    Your GPA per semester and cumulative CGPA are calculated instantly. The summary card shows your total credits, quality points, CGPA, and degree classification.

  4. 4

    Click "+ Add Semester" to add more semesters. Use the × button to remove individual courses or the Remove button to delete an entire semester.

Frequently Asked Questions

How is CGPA calculated in Nigerian universities? ▼
CGPA (Cumulative Grade Point Average) is calculated by dividing total quality points by total credit units across all semesters. Quality points for a course equal the credit units multiplied by the grade point. For example, a 3-credit course with a grade of B on a 5.0 scale earns 3 × 4 = 12 quality points. Your CGPA is the sum of all quality points divided by the sum of all credit units. This weighted average means courses with higher credit units have more impact on your CGPA.
What is the difference between the 5.0 and 4.0 grading scale? ▼
The 5.0 scale assigns A=5, B=4, C=3, D=2, E=1, F=0 and is used by the majority of Nigerian universities including UNILAG, University of Ibadan, OAU, UNIBEN, and most federal and state universities. The 4.0 scale assigns A=4, B=3, C=2, D=1, E=0, F=0 and was recommended by the National Universities Commission (NUC) in a 2017 directive, though adoption has been limited. Check your university handbook to confirm which scale your institution uses.
What are the degree classifications on a 5.0 scale? ▼
On the 5.0 scale: First Class is 4.50–5.00, Second Class Upper (2:1) is 3.50–4.49, Second Class Lower (2:2) is 2.40–3.49, Third Class is 1.50–2.39, and Pass is 1.00–1.49. A CGPA below 1.00 generally means the student has failed to meet minimum academic requirements. First Class is the highest distinction and Second Class Upper is the most common target for competitive graduate programmes and employers.
What are the degree classifications on a 4.0 scale? ▼
On the 4.0 scale: First Class is 3.50–4.00, Second Class Upper (2:1) is 3.00–3.49, Second Class Lower (2:2) is 2.00–2.99, and Third Class is 1.00–1.99. This scale does not have a separate "Pass" category — a CGPA below 1.00 is considered a fail. The 4.0 scale classifications are structurally similar to the US GPA system, which makes international comparison slightly more straightforward.
How do I convert my Nigerian CGPA to the US 4.0 GPA? ▼
A common rough conversion is to multiply your 5.0 CGPA by 0.8. For example, a 4.25 CGPA on the 5.0 scale becomes approximately 3.40 on the US 4.0 scale. This is an estimate — credential evaluation services like WES (World Education Services) or ECE use their own proprietary formulas that consider individual course grades, credit hours, and institutional context. If you are applying to a US university or employer that requires a US GPA, use an official credential evaluation rather than a simple multiplication.
What credit unit range is used in Nigerian universities? ▼
Nigerian universities typically assign between 1 and 6 credit units per course. Most lecture courses are 2 or 3 credits. Lab-based courses and practicals are often 1-2 credits. Capstone projects and final-year research are usually 4-6 credits. The credit unit reflects the weekly contact hours — a 3-credit course meets for roughly 3 hours per week over a semester. The total credit load per semester is usually 15-24 credits depending on the programme and university.

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About this Tool

The CGPA Calculator Nigeria is a free tool for Nigerian university students to calculate their Cumulative Grade Point Average on either the 5.0 or 4.0 grading scale. The 5.0 scale is the traditional system used by the majority of Nigerian universities — including UNILAG, University of Ibadan, Obafemi Awolowo University, University of Benin, Ahmadu Bello University, and most federal, state, and private institutions. The 4.0 scale was recommended by the National Universities Commission (NUC) in a 2017 directive to align with international standards, though adoption has been gradual and most institutions still use the 5.0 system. This calculator lets you add multiple semesters, enter courses with credit units and letter grades, and instantly see your GPA per semester, cumulative CGPA, degree classification (First Class, Second Class Upper, Second Class Lower, Third Class, or Pass), and an approximate conversion to the US 4.0 GPA scale. Quality points are calculated by multiplying each course's credit units by the grade point value, then summing across all courses. The CGPA is the total quality points divided by total credit units. Degree classifications follow the standard bands used across Nigerian universities: on the 5.0 scale, First Class requires a minimum CGPA of 4.50, Second Class Upper starts at 3.50, and Second Class Lower starts at 2.40. The US 4.0 conversion uses the common approximation of multiplying the 5.0 CGPA by 0.8, though official credential evaluations by WES or ECE may produce different results. This tool is useful for tracking your academic performance across semesters, estimating where you stand for graduation, evaluating eligibility for scholarships or postgraduate programmes, and preparing transcripts for international applications. All calculations run entirely in your browser — no data is stored or sent anywhere.