Convert any percentage score to its letter grade and 4.0 GPA point instantly. Free online letter grade calculator with the full A+ to F grading scale.
A letter grade calculator instantly converts a numeric percentage score into its corresponding letter grade (A+ through F) and 4.0-scale grade point, using the standard grading scale used by most U.S. high schools and colleges. Simply enter a percentage, and the calculator shows you exactly which letter grade band it falls into, along with the GPA point that letter grade is worth.
While many gradebooks and learning management systems display percentages, most transcripts, report cards, and GPA calculations use letter grades instead. This creates a common need to quickly translate a percentage score — whether from a single test, an assignment, or an overall course average — into the letter grade that will actually appear on record.
This calculator is useful for students checking what grade a specific percentage translates to, for quickly verifying a teacher's grade calculation, and for understanding exactly where the boundary is between two adjacent letter grades.
A student scores 85% on their final course average. Since 85% falls between 83% and 86%, the letter grade is a B, which is worth 3.0 grade points on the standard 4.0 scale.
The letter grade shown represents the standardized alphabetic equivalent of your percentage score under the most common U.S. grading scale — if your score sits near the edge of a grade band (like 89% or 92%), even a single additional point could shift you into the next letter grade up. The grade point value is what actually gets used in GPA calculations, not the percentage itself, which is why understanding this conversion matters beyond just seeing your grade — a B and a B- both round to similar percentages but represent meaningfully different GPA contributions (3.0 vs 2.7). Remember that this calculator uses the most widely-used standard scale, but your school's official policy is always the final authority — use this tool to build intuition and estimate outcomes, then confirm against your syllabus or student handbook for anything that affects your official record.
Enter any percentage score to instantly see its letter grade and corresponding 4.0-scale GPA point.
| Letter Grade | Percent Range | Grade Point |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 4.0 |
| A- | 90–92% | 3.7 |
| B+ | 87–89% | 3.3 |
| B | 83–86% | 3.0 |
| B- | 80–82% | 2.7 |
| C+ | 77–79% | 2.3 |
| C | 73–76% | 2.0 |
| C- | 70–72% | 1.7 |
| D+ | 67–69% | 1.3 |
| D | 63–66% | 1.0 |
| D- | 60–62% | 0.7 |
| F | 0–59% | 0.0 |