Used by students across Nigerian universities & polytechnics
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- NUC 5.0 & 4.0
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Project and convert your GPA
After you calculate, plan your degree class or convert scores for scholarships.
Reference
NUC grading & degree classes
The standard 5.0 scale used by Nigerian universities, plus how CGPA maps to class of degree.
Grade points
| Grade | Score | Points | Remarks |
|---|---|---|---|
| A | 70 – 100% | 5.0 | Excellent |
| B | 60 – 69% | 4.0 | Very Good |
| C | 50 – 59% | 3.0 | Good |
| D | 45 – 49% | 2.0 | Fair |
| E | 40 – 44% | 1.0 | Pass |
| F | 0 – 39% | 0.0 | Fail |
Degree classifications
First Class Honours4.50 – 5.00
Second Class Honours (Upper — 2:1)3.50 – 4.49
Second Class Honours (Lower — 2:2)2.40 – 3.49
Third Class Honours1.50 – 2.39
Pass1.00 – 1.49
CGPA formula
QP = Credit Units × Grade Points
Semester GPA = Total QP ÷ Total CU
CGPA = Cumulative QP ÷ Cumulative CU
FAQ
Common questions
Quick answers about CGPA calculation in Nigeria.
How do I calculate my CGPA on a 5.0 scale?
Multiply each course's credit units by the grade point (A = 5, B = 4, C = 3, D = 2, E = 1, F = 0) to get Quality Points (QP). Sum all QPs and divide by total credit units for your semester GPA. CGPA is total cumulative QPs ÷ total accumulated credit units.
What CGPA do I need for a First Class degree in Nigeria?
The NUC mandates a CGPA of 4.50 – 5.00 for First Class Honours. 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.
What is the difference between GPA and CGPA?
GPA is your grade point average for a single semester. CGPA is your Cumulative Grade Point Average — the weighted running average across all semesters in your programme. Use our calculator to compute both instantly.
Does GPA Tools support the polytechnic 4.0 grading scale?
Yes. GPA Tools supports both the Nigerian university 5.0 scale and the polytechnic 4.0 scale. Simply select your institution type in the GPA calculator.
How do I convert my Nigerian CGPA to the US 4.0 scale?
Go to the Conversion tool on GPA Tools. Enter your 5.0 CGPA and it will instantly output your US 4.0 equivalent and percentage score — useful for scholarship and graduate school applications abroad.
Is GPA Tools free to use?
Yes, completely free. No account, no app download. Open it on any device and start calculating immediately.
Know where you stand academically
Free, NUC-aligned, and built for Nigerian students. Calculate your CGPA in under a minute.