Letter Grade to GPA Converter
Select a letter grade to see its GPA equivalent on both 4.0 and 5.0 scales.
Standard values shown. Some institutions assign different points. Always verify with your school.
Select Your Letter Grade
Complete Grade Reference Table
The 5.0 scale (used in Nigeria) has no plus or minus grades, so every A is 5, every B is 4, and so on. Its percentage bands also differ (A starts at 70%). Use the Percentage to GPA Calculator for 5.0-scale bands.
| Letter Grade | 4.0 GPA | 5.0 GPA | Percentage | Description |
|---|---|---|---|---|
| A+ | 4.0 | 5.0 | 90–100% | Exceptional |
| A | 4.0 | 5.0 | 85–89% | Excellent |
| A- | 3.7 | 5.0 | 80–84% | Very Good |
| B+ | 3.3 | 4.0 | 75–79% | Good |
| B | 3.0 | 4.0 | 70–74% | Above Average |
| B- | 2.7 | 4.0 | 65–69% | Average |
| C+ | 2.3 | 3.0 | 60–64% | Satisfactory |
| C | 2.0 | 3.0 | 55–59% | Acceptable |
| C- | 1.7 | 3.0 | 50–54% | Marginal Pass |
| D+ | 1.3 | 2.0 | 47–49% | Poor |
| D | 1.0 | 2.0 | 45–46% | Minimum Pass |
| F | 0.0 | 0.0 | 0–44% | Fail |
GPA Thresholds
Grade-point values may differ. Some schools give A+ = 4.3 or don't offer plus/minus grades.
Frequently Asked Questions
An A+ equals 4.0 on the standard 4.0 scale. Some institutions assign it 4.3, but 4.0 is the most widely used value.
A B is worth 3.0 GPA points on the 4.0 scale and 4.0 on the 5.0 scale used by Nigerian universities, which has no plus or minus grades.
Plus grades are 0.3 higher than the base (B+ = 3.3) and minus grades are 0.3 lower (B- = 2.7). This allows more granular grade reporting within each letter band.
No. Some institutions only use whole letter grades (A, B, C, D, F) without plus or minus modifiers. Check your school's grading policy.
A 3.5 GPA falls between B+ (3.3) and A- (3.7), roughly corresponding to the A- range depending on how your school rounds.