On the standard 4.0 scale, A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, B− = 2.7, C+ = 2.3, C = 2.0, C− = 1.7, D+ = 1.3, D = 1.0, D− = 0.7, and F = 0.0. Some schools use a simplified scale without plus/minus distinctions, where every A-range grade equals 4.0.
Full letter grade to GPA conversion table
| Letter | GPA points | Typical percentage |
|---|---|---|
| A / A+ | 4.0 | 93–100% |
| A− | 3.7 | 90–92% |
| B+ | 3.3 | 87–89% |
| B | 3.0 | 83–86% |
| B− | 2.7 | 80–82% |
| C+ | 2.3 | 77–79% |
| C | 2.0 | 73–76% |
| C− | 1.7 | 70–72% |
| D+ | 1.3 | 67–69% |
| D | 1.0 | 63–66% |
| D− | 0.7 | 60–62% |
| F | 0.0 | Below 60% |
Why this table is a reference, not a rule
The percentage ranges shown match a common standard grading scale, but individual schools set their own thresholds — an A− might begin at 90% at one school and 92% at another. Always convert your percentage to a letter grade using your own school's published scale before looking up the GPA value.
Plus/minus vs. simplified GPA scales
Some colleges use only whole-letter GPA values (A = 4.0, B = 3.0, C = 2.0) without plus/minus distinctions, so an A− and a straight A both convert to 4.0. Check whether your institution's scale includes plus/minus GPA values before combining grades from different courses.
Grade Calculator Editorial Team
We create plain-language grading tools and educational guides, check every worked example against the underlying formula, and note where school or instructor policies can change the result.