Understanding the 4.0 GPA Scale
The 4.0 scale is the standard US college grading system. Each letter grade maps to a numeric grade point value, and your GPA is the weighted average of those values across all courses, where the weight is the credit-hour value of each course. A 4-credit lecture counts twice as heavily as a 2-credit lab.
| Letter Grade | Grade Points | Percentage Range |
|---|---|---|
| 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% |
Common GPA Thresholds
- 4.0: Perfect GPA — all A grades
- 3.7–3.9: Summa Cum Laude range at most universities
- 3.5–3.69: Magna Cum Laude / Dean's List at most schools
- 3.0–3.49: Cum Laude range; competitive for many graduate programs
- 2.0: Minimum passing GPA required by most institutions
- Below 2.0: Academic probation risk at many colleges
Graduate school admissions typically require a minimum 3.0 undergraduate GPA, with competitive programs expecting 3.5+. Medical schools typically require 3.7+ science GPA. Law schools use a slightly different calculation (LSAC GPA) that may differ from your transcript GPA.
How to Raise Your GPA
GPA changes slowly because past grades remain in the calculation. The credit-hour weight means high-credit courses have the most impact — one 4-credit A converts 2.7 quality points per credit more efficiently than two 2-credit courses. Focus on: attending office hours for high-credit courses before exams, dropping courses before the grade deadline if needed (check your school's withdrawal policy), and retaking courses with grade forgiveness if your school offers it.