College GPA Calculator
This college GPA calculator turns your letter grades and credit hours into a GPA on the standard 4.0 scale — built for college courses where a 4-credit class counts more than a 1-credit one.
Your numbers
Your result
Uses the standard U.S. grading scale (A = 4.0). Estimates only — confirm with your syllabus.
How the college GPA calculator works
College GPAs weight every course by its credit hours — a 4-credit lab affects your GPA more than a 1-credit seminar. Each letter grade converts to grade points, gets multiplied by the course's credits, and the total is divided by total credits. Most scholarships, internships, and grad schools look at this cumulative 4.0 number.
Worked example
Suppose you took three courses this semester: an A in a 3-credit class, a B+ in a 4-credit class, and an A- in a 3-credit class. Convert each grade to points, multiply by credits, then divide by total credits (10):
GPA = (4.0 × 3 + 3.3 × 4 + 3.7 × 3) ÷ 10 = (12 + 13.2 + 11.1) ÷ 10 = 36.3 ÷ 10 = 3.63
The heavier 4-credit B+ pulls the average down more than the two 3-credit A-range grades pull it up — that's credit weighting in action.
Letter grade to GPA points (standard 4.0 scale)
| Letter | Percentage | GPA points |
|---|---|---|
| A / A+ | 93–100% | 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 |
| D | 63–66% | 1.0 |
| F | Below 60% | 0.0 |
Most US colleges use A = 4.0. A few award A+ = 4.3 — check your registrar if that applies to you.