Your GPA is one of the first things colleges look at, but most students have never actually been taught how it works. Whether you are a freshman trying to build a strong foundation or a junior preparing your college list, understanding the difference between weighted and unweighted GPA and knowing how to calculate both gives you real control over your admissions strategy. This guide breaks it all down clearly, with formulas, worked examples, and what it actually means for your application.
Your GPA (Grade Point Average) is one of the most important numbers in college admissions. This guide explains how GPA is calculated, the difference between weighted and unweighted GPA, and how to convert letter grades to grade points — with worked examples.
The Standard 4.0 Grade-Point Scale
| Letter Grade | Percentage | Grade 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 | 65–69 | 1.0 |
| F | Below 65 | 0.0 |
How to Calculate Unweighted GPA
An unweighted GPA treats every class equally on a 0–4.0 scale, regardless of difficulty. To calculate it:
- Convert each final letter grade to grade points using the scale above.
- Add up all the grade points.
- Divide by the number of classes.
| Class | Grade | Grade Points |
|---|---|---|
| English | A | 4.0 |
| Math | A | 4.0 |
| History | B+ | 3.3 |
| Science | B | 3.0 |
| Spanish | A- | 3.7 |
Total: 18.0 ÷ 5 classes = 3.6 Unweighted GPA
How to Calculate Weighted GPA
A weighted GPA rewards course rigor by adding extra points for honors, AP, and IB classes — usually on a 0–5.0 scale. A common system adds 1.0 for AP/IB and 0.5 for Honors.
| Class | Grade | Type | Weighted Points |
|---|---|---|---|
| English AP | A | AP | 5.0 |
| Calculus AP | A | AP | 5.0 |
| History | B+ | Standard | 3.3 |
| Science | B | Standard | 3.0 |
| Spanish | A- | Standard | 3.7 |
Total: 20.0 ÷ 5 classes = 4.0 Weighted GPA
Weighted vs. Unweighted: Which Matters More?
Colleges look at both, but many recalculate GPA using their own formula to compare applicants fairly. What admissions officers really care about is the grade and the rigor of the courses behind it. A 3.8 in demanding AP courses is generally viewed more favorably than a 4.0 in all standard-level classes.
Unweighted GPA
- ✓ Standardized 0–4.0 scale
- ✓ Used by most high schools
- ✓ Easy to compare across schools
- ✗ Does not reflect course difficulty
Weighted GPA
- ✓ Rewards AP, IB, and Honors rigor
- ✓ Can exceed 4.0 (up to 5.0)
- ✓ Preferred by selective colleges
- ✗ Varies by school district
The Quick GPA Formula
GPA = (Sum of grade points) ÷ (Number of classes)
For credit-weighted GPAs: multiply each grade by its credit hours, sum those, and divide by total credit hours.
⚠️ Important: Grade-point scales vary by school district. Always check your school’s official policy for its exact conversion and weighting system before calculating your GPA.
Improve Your GPA and Your Admissions Profile
ConnectPrep helps students strengthen grades, choose the right course rigor, and build a complete college admissions strategy.
Note: Grade-point scales vary by school district. Check your school’s official policy for its exact conversion and weighting system.