Updated June 17, 2026
On the standard 4.0 scale: A = 4.0 grade points, B = 3.0, C = 2.0, D = 1.0, and F = 0. Plus and minus grades fall between those whole values. The percentage cutoffs in the table are the most common ones, but your school may draw the lines a little differently.
Complete GPA conversion table
| Letter Grade | GPA Points (4.0 scale) | Percentage Range | Quality |
|---|---|---|---|
| A+ / A | 4.0 | 93-100% | Excellent |
| A- | 3.7 | 90-92% | Excellent |
| B+ | 3.3 | 87-89% | Above average |
| B | 3.0 | 83-86% | Good |
| B- | 2.7 | 80-82% | Good |
| C+ | 2.3 | 77-79% | Average |
| C | 2.0 | 73-76% | Average |
| C- | 1.7 | 70-72% | Below average |
| D+ | 1.3 | 67-69% | Poor |
| D | 1.0 | 63-66% | Poor |
| D- | 0.7 | 60-62% | Barely passing |
| F | 0.0 | Below 60% | Failing |
Does every school use the same scale?
No. Some schools assign A+ a value of 4.3 rather than 4.0. Others skip plus and minus grades entirely, so every A maps to 4.0 with nothing in between. A few schools stay on a 100-point scale and never convert. Confirm your school's specific conversion before relying on the table above.
Weighted GPA scale (for AP and honors)
On a weighted scale, AP and IB grades receive +1.0 above the standard grade-point value, and honors courses receive +0.5. An A in an AP class becomes 5.0; a B in an honors class becomes 3.5. The weighted scale can exceed 4.0. The unweighted scale cannot. See weighted vs. unweighted GPA for details on when each version is used.
How to convert a percentage to a GPA
Match your percentage to the letter grade ranges in the table, then use the corresponding GPA point value. A 91% is an A-, which is 3.7 on the 4.0 scale. To skip the table lookup entirely, enter your grades and credit hours into the GPA calculator and it handles the conversion.
What is GPA scale reporting on the Common App?
The Common App asks which GPA scale your school uses when you self-report grades. Options include 4.0, 5.0 (weighted), 100-point, and letter-only. Select the scale your school actually uses on your transcript. Colleges recalculate on their own standard regardless, so the entry is for consistency, not the number they will use.