How to Calculate Your CGPA in Nigerian Universities (With Formula and Examples)

Most Nigerian universities grade on a 5-point scale, where every course carries a grade point (A=5, B=4, C=3, D=2, E/F=1 or 0 depending on the institution) and a number of units. Your CGPA is a units-weighted average across every course you've taken, not a simple average of your grades.

The formula

For each course: Grade Point x Course Units = Quality Points. Add up every course's quality points, add up every course's units, then divide total quality points by total units. That final number, usually to two decimal places, is your CGPA.

A worked example

Say you took four courses in a semester: a 3-unit course with an A (5 points), a 2-unit course with a B (4 points), a 3-unit course with a C (3 points), and a 2-unit course with a B (4 points).

• 3 units x 5 = 15 quality points
• 2 units x 4 = 8 quality points
• 3 units x 3 = 9 quality points
• 2 units x 4 = 8 quality points
• Total: 40 quality points over 10 units = 4.00 GPA for that semester

GPA vs CGPA

Your GPA is that same calculation for one semester. Your CGPA carries every semester you've completed, so a single bad semester has less impact on your CGPA the further you get into your degree, because it's averaged against a growing pool of units. This is also why a strong final year can meaningfully pull a CGPA up, even after a rough 100 or 200 level.

A note on grading scales

Not every Nigerian university uses identical grade-point boundaries (what counts as an A varies slightly by institution), so always check your own school's official grading scale before relying on a generic table. The core formula (units x grade point, summed, divided by total units) stays the same everywhere.

If you'd rather skip the manual arithmetic each semester, Testwiz's CGPA calculator does this automatically: add your courses, units, and grades, and it computes your running CGPA for you.