GPA Calculator
Letter grades × credit hours — your 4.0-scale GPA, live.
How this is calculated
GPA = Σ(grade points × credits) ÷ Σ(credits)
Worked example (the defaults): A (3 credits) + B+ (4 credits) + C (3 credits) = 4.0×3 + 3.3×4 + 2.0×3 = 31.2 grade points over 10 credits = 3.12 GPA. Notice the 4-credit B+ pulls harder than either 3-credit course — credits are the whole game.
The 4.0 points table this page uses
| Letter | Points | Letter | Points |
|---|---|---|---|
| A+ / A | 4.0 | C+ | 2.3 |
| A− | 3.7 | C | 2.0 |
| B+ | 3.3 | C− | 1.7 |
| B | 3.0 | D+ / D / D− | 1.3 / 1.0 / 0.7 |
| B− | 2.7 | F | 0.0 |
Frequently asked questions
How is GPA calculated?
Each course's letter grade converts to points on the 4.0 scale (A = 4.0, B+ = 3.3, C = 2.0 …), multiplied by the course's credit hours; the sum of grade-points divides by the total credits. A 3-credit A and a 3-credit C average to a 3.0 — credits are the weights.
What GPA scale does this use?
The standard US 4.0 scale with plus/minus steps (A− = 3.7, B+ = 3.3, and so on, with A+ capped at 4.0 — the most common convention). Some schools award A+ = 4.3 or skip minus grades; if yours does, your registrar's number wins.
How do I convert percentages to GPA?
There is no universal mapping — a rough US convention is 93%+ → A, 90–92 → A−, 87–89 → B+, 83–86 → B, and so on, but institutions differ widely (and South African universities don't use GPA at all). Convert each course to its letter per YOUR school's table first, then let the credits do the weighting here.
What is a good GPA?
Rules of thumb: 3.0 keeps most academic-standing requirements happy, 3.5+ is strong for graduate programs, 3.7+ is competitive for the most selective. Context matters more than the raw number — trends and course difficulty count with real admissions readers.