Percentage to GPA Conversion Table
| Percentage | Letter Grade | GPA (4.0) |
|---|---|---|
| 93 - 100% | A | 4.0 |
| 90 - 92% | A- | 3.7 |
| 87 - 89% | B+ | 3.3 |
| 83 - 86% | B | 3.0 |
| 80 - 82% | B- | 2.7 |
| 77 - 79% | C+ | 2.3 |
| 73 - 76% | C | 2.0 |
| 70 - 72% | C- | 1.7 |
| 67 - 69% | D+ | 1.3 |
| 65 - 66% | D | 1.0 |
| 0 - 64% | F | 0.0 |
How it works
The conversion maps ranges of percentages to specific grade points. Unlike percentages which are continuous (e.g., 89.5%), GPA is "bucketed" into step intervals.
Notice how 87, 88, and 89 all result in the exact same 3.3 GPA.
Why convert?
- College applications usually require a 4.0 scale.
- Scholarships standardize criteria using GPA.
The Calculation Logic
There is no single mathematical formula (like x / 20) that converts percentage to GPA perfectly because GPA uses interval scales.
However, a common rough estimate used for quick mental math is:
(Percentage / 20) - 1 = Approx GPAExample
Student Score88%
Interval Check87 - 89 range
Converted GPA
3.3
Percentage to GPA FAQ
Common questions about the 100-point to 4.0 scale conversion.
Is 100% a 4.0 or 5.0?
On a standard Unweighted Scale, 100% is a 4.0. You can typically only achieve higher than a 4.0 (like 5.0) if you are using a Weighted Scale that accounts for AP/IB class difficulty.
What GPA is 85%?
An 85% typically falls into the 'B' category (83-86%), which converts to a 3.0 GPA on the standard scale.
What percentage is passing?
In most US high schools and colleges, a 65% (D) is the lowest passing grade. Anything below 65% is considered an F (0.0 GPA).
How do I convert GPA back to percentage?
It is difficult to convert precisely back to percentage because GPA uses broad intervals. A 3.0 could be 83%, 84%, 85%, or 86%. Calculating backwards is just an estimation.