Introduction to the US 4.0 GPA Scale
In the United States high school and post-secondary educational system, the Grade Point Average (GPA) is the primary numerical metric used to assess academic achievement. Calculated on a standard 4.0 scale, GPA converts letter grades (A, B, C, D, F) into numerical values ranging from 0.0 to 4.0.
Standard 4.0 Unweighted Grade Point Conversion Table
The standard unweighted GPA scale evaluates all courses equally, regardless of subject difficulty or level.
| Letter Grade | Percentage Equivalent | Standard Grade Point (4.0 Scale) |
|---|---|---|
| A+ / A | 93% – 100% | 4.00 |
| A- | 90% – 92% | 3.70 |
| B+ | 87% – 89% | 3.30 |
| B | 83% – 86% | 3.00 |
| B- | 90% – 82% | 2.70 |
| C+ | 77% – 79% | 2.30 |
| C | 73% – 76% | 2.00 |
| D | 65% – 69% | 1.00 |
| F | Below 65% | 0.00 |
Weighted GPA vs. Unweighted GPA
While unweighted GPA caps all grade points at 4.0, high schools across the US utilize Weighted GPA scales to incentivize students taking rigorous coursework:
- Honors Courses: Award an extra +0.5 point bonus (e.g. An 'A' equals 4.5).
- AP (Advanced Placement) & IB (International Baccalaureate): Award an extra +1.0 point bonus (e.g. An 'A' equals 5.0).
Latin Honors at US Graduation
Most US universities grant Latin honors to graduating seniors based on cumulative GPA percentiles:
- Summa Cum Laude: "With Highest Honor" — Top 1% to 5% of class (typically 3.90+ GPA).
- Magna Cum Laude: "With Great Honor" — Next 5% to 15% (typically 3.75+ GPA).
- Cum Laude: "With Praise" — Next 15% to 30% (typically 3.50+ GPA).
Frequently Asked Questions
Everything you need to know about grade calculations, grading scales, and formulas.
What is considered a good GPA in US universities?
A GPA of 3.0 or higher is generally considered good in US colleges. A 3.5 to 4.0 GPA qualifies students for Dean's List honors and competitive graduate school admissions.
How does AP / IB course weighting work?
Advanced Placement (AP), International Baccalaureate (IB), and Dual Enrollment courses award a +1.0 grade point bonus (an 'A' is worth 5.0 instead of 4.0). Honors classes award a +0.5 bonus.