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Percentage to GPA Calculator
To turn percentages into a GPA, convert each course to a letter grade and its grade points first, then average the points by credits. Averaging the percentages and dividing by 25 gives a different number, so it is not how US schools calculate GPA. Enter your courses with their final percentages and credits. The calculator uses the College Board conversion (93–100 = A = 4.0, 90–92 = A− = 3.7, and so on, with 65 as the lowest D) or a common 10-point scale where D− is 60–62.
Formula: GPA = Σ(grade points × credits) ÷ Σ credits. The table shows the letter and points for each course, so you can check your transcript line by line. If your school prints its own percentage-to-letter scale, use it; the scale is the only thing that changes.
Worked example: 91% (A−, 3.7), 84% (B, 3.0), 88% (B+, 3.3) and 76% (C, 2.0) over 4, 4, 3 and 3 credits give 42.7 quality points ÷ 14 credits = 3.05. The same courses average 85.1%, and 85.1 ÷ 25 = 3.41, which overstates the GPA by 0.36.
Result and step-by-step working
Credit-weighted average percentage: 85.14% · 14 credits
| Course | Percent | Letter | Grade points | Credits | Points × credits |
|---|---|---|---|---|---|
| Biology | 91% | A- | 3.7 | 4 | 14.80 |
| Calculus | 84% | B | 3.0 | 4 | 12.00 |
| English | 88% | B+ | 3.3 | 3 | 9.90 |
| History | 76% | C | 2.0 | 3 | 6.00 |
- Turn each percentage into a letter, then grade pointsCollege Board scale: 93–100 = A (4.0), 90–92 = A− (3.7), 87–89 = B+ (3.3) … 65–66 = D (1.0), below 65 = F.
- Weight by creditsQuality points = 42.70 over 14 credits.
- GPA42.70 ÷ 14 = 3.05.
- Why not just divide by 25?Dividing the average percentage by 25 gives 3.41. US schools do not convert that way: every grade from 93 to 100 is worth 4.0, so the per-course method above is the one admissions offices use.
Percentage to GPA conversion chart (College Board)
| Percent | Letter | GPA |
|---|---|---|
| 97–100 | A+ | 4.0 |
| 93–96 | 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 |
| Below 65 | F | 0.0 |
Frequently asked questions
- What GPA is 85 percent?
- On the College Board scale 85% is a B, which is 3.0. On a plain 10-point scale (80–89 = B) it is also 3.0.
- What GPA is 90 percent?
- 90% is an A− (3.7) on most US scales. You need 93% or more for a full 4.0 A.
- Can I convert my average percentage directly to GPA?
- Only roughly. A GPA comes from grade points per course, so two students with the same average percentage can have different GPAs. Use the course-by-course table above for an accurate result.
- How do I convert Indian or other international percentages to GPA?
- Indian, Nepali and other national percentages use different scales, so a US chart does not apply. WES and similar services convert them with country-specific tables. See the CGPA and country calculators linked below.
Last reviewed: October 8, 2026. Calculations run in your browser; nothing you enter is sent anywhere.