Calculate your GPA from letter grades and credit hours on the standard 4.0 scale — free, instant, and entirely in your browser. Runs entirely in your browser — your numbers never leave this device.
| Course | Grade | Grade points | Credits | Quality points |
|---|---|---|---|---|
| Biology | A | 4.00 | 4 | 16 |
| English Composition | B+ | 3.30 | 3 | 9.9 |
| US History | A- | 3.70 | 3 | 11.1 |
| Calculus | B | 3.00 | 4 | 12 |
| Letter grade | Percentage range | Grade points |
|---|---|---|
| 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 | 65–66% | 1.0 |
| D− | 60–64% | 0.7 |
| F | 0–59% | 0.0 |
Enter each course with its letter grade and credit hours. Every letter grade is first converted to grade points 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. An A+ counts the same as an A (4.0) on this scale.
Each course contributes grade points multiplied by its credit hours, so a 4-credit A is worth more than a 1-credit A. The calculator adds up all of those quality points, divides by your total credit hours, and rounds the result to two decimal places. That weighting is why two students with the same grades can have different GPAs.
This calculator uses the standard unweighted 4.0 scale used by most US colleges. Your school may use a slightly different scale — some treat A+ as 4.3, some drop plus and minus grades entirely — so treat the result as an accurate estimate on the standard scale and check your transcript or student handbook for your institution's official version.
It uses the standard unweighted 4.0 scale: A = 4.0, A− = 3.7, B+ = 3.3, down to F = 0.0, with the full table shown on this page. Some schools use different scales, such as counting A+ as 4.3, so confirm your school's scale if your official GPA looks slightly different.
A grade in a high-credit course moves your GPA more than the same grade in a low-credit course, because each grade is multiplied by its credit hours before averaging. An A in a 4-credit lab science adds 16 quality points, while an A in a 1-credit seminar adds only 4. That is why a single B in a core course can outweigh several strong minor-course grades.
Yes, on the standard scale an F earns 0.0 grade points, but its credit hours still count in the denominator. That double effect is what makes an F so damaging: it adds nothing to your points while adding full weight to your total credits. Retaking the course may replace the grade at some schools, but policies vary widely.
No. This calculator runs 100% in your browser and stores nothing — your courses and grades are never uploaded, saved, or shared. You can close the tab and everything you entered disappears with it.
Small differences usually come from scale variations: your school might not use plus and minus grades, might weight A+ above 4.0, or might exclude repeated or pass/fail courses. This tool follows the standard 4.0 table exactly, so use it for planning and what-if checks, and treat your registrar's figure as the official one.
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