How to Calculate a Weighted GPA (with Worked Examples)
What weighted GPA means
In an unweighted GPA, every A is 4.0. In a weighted GPA, advanced classes count more. The most common system bumps AP, IB, and honors classes by a full grade point:
| Class type | A is worth |
|---|---|
| Regular | 4.0 |
| Honors | 4.5 |
| AP / IB | 5.0 |
(Some schools weight honors at 4.0 and only AP/IB at 5.0. Always check your school's policy first.)
The math
For each class, multiply the grade-point value by the credit hours, then divide the sum by total credit hours.
Weighted GPA = Σ (grade_points × credits) / Σ credits
Worked example
You're taking five classes this semester:
| Course | Grade | Type | Credits |
|---|---|---|---|
| English Lit | A | Honors | 4 |
| AP Calculus | B | AP | 4 |
| AP Biology | A | AP | 4 |
| Spanish 3 | A | Regular | 3 |
| US History | B+ | Regular | 3 |
Convert grades:
- A in Honors English → 4.5 × 4 = 18.0
- B in AP Calculus → 4.0 × 4 = 16.0
- A in AP Biology → 5.0 × 4 = 20.0
- A in Regular Spanish → 4.0 × 3 = 12.0
- B+ in Regular US History → 3.3 × 3 = 9.9
Total points: 75.9. Total credits: 18.
Weighted GPA = 75.9 ÷ 18 = 4.22
Common pitfalls
- Forgetting to weight only what your school weights. Some schools don't weight pre-AP or pre-IB classes.
- Counting pluses and minuses on the regular scale only. Weighting usually applies to the base grade, not the +/- adjustment.
Skip the math
Our GPA calculator lets you switch between 4.0, 4.3, and 5.0 scales with one click.
Looking ahead: standardized test prep
Weighted GPA gets you into the door — standardized tests open it. The Princeton Review prep series is the most widely used among students who self-study.
Princeton Review SAT/AP Prep (affiliate link).