Stony Brook University
GPA Calculator
Calculate your Stony Brook GPA and convert it to percentage using the official plus/minus 4.0 grading scale used on your Seawolves transcript.
Stony Brook GPA Calculator
Add each course with its letter grade and credits. Calculation uses Stony Brook's official grade-point values.
Add Your Courses
Stony Brook uses a plus/minus 4.0 scale from A (4.00) to F (0.00). There is no A+ grade.
| Course | Grade | Credits | Actions |
|---|
How Stony Brook GPA Is Calculated
Stony Brook multiplies each grade's point value by course credits to get quality points, then divides total quality points by total graded credits.
📝 Worked Example
The official example from the Stony Brook Undergraduate Bulletin using five courses:
| Grade | Point Value | Course Credits | Quality Points |
|---|---|---|---|
| A | 4.00 | 3 | 4.00 × 3 = 12.00 |
| B | 3.00 | 4 | 3.00 × 4 = 12.00 |
| C+ | 2.33 | 3 | 2.33 × 3 = 6.99 |
| D | 1.00 | 3 | 1.00 × 3 = 3.00 |
| F | 0.00 | 3 | 0.00 × 3 = 0.00 |
| Total | — | 16 | 33.99 |
Plugging into the formula:
Stony Brook GPA to Percentage Converter
Convert your 4.0-scale Stony Brook GPA to an equivalent percentage instantly.
Convert GPA → Percentage
Enter any Stony Brook GPA between 0.0 and 4.0.
The Conversion Formula
Stony Brook uses a 4.0 scale, so:
Example: If your GPA is 3.5, then Percentage = 3.5 × 25 = 87.50%.
Official Stony Brook Grading Scale
Grade-point values used to compute term and cumulative GPA, sourced from the Stony Brook University Undergraduate Bulletin.
📘 Stony Brook Plus/Minus Grade Points
Note: Stony Brook has no A+ and no D− grade.
| Letter Grade | Grade Point | Definition |
|---|---|---|
| A | 4.00 | Superior work |
| A− | 3.67 | Superior work |
| B+ | 3.33 | Good work |
| B | 3.00 | Good work |
| B− | 2.67 | Good work |
| C+ | 2.33 | Satisfactory work |
| C | 2.00 | Satisfactory work |
| C− | 1.67 | Satisfactory work |
| D+ | 1.33 | Minimum passing credit |
| D | 1.00 | Minimum passing credit |
| F | 0.00 | Failing work |
| Q | 0.00 | Academic dishonesty (counted as F) |
📌 Grades Excluded from GPA
The following marks carry no grade points and are not calculated into the GPA: P (Pass), NC (No Credit), NR (No Record), R (Registered), S (Satisfactory), U (Unsatisfactory), W (Withdrawal).
An unresolved Incomplete becomes I/F and is averaged as an F. A converted N/F (No Record in a letter-graded course) is also averaged as an F. Grades for courses transferred from other institutions do not affect the Stony Brook GPA.
Stony Brook GPA — Frequently Asked Questions
What GPA scale does Stony Brook University use?
Stony Brook uses a plus/minus 4.0 grade-point scale: A = 4.00, A− = 3.67, B+ = 3.33, B = 3.00, B− = 2.67, C+ = 2.33, C = 2.00, C− = 1.67, D+ = 1.33, D = 1.00, and F = 0.00. There is no A+ or D− grade.
Does Stony Brook University have an A+ grade?
No. The highest grade at Stony Brook is A, worth 4.00 grade points. There is also no D− grade; the scale runs from A down to D, then F.
How do I convert Stony Brook GPA to percentage?
The standard conversion is Percentage = GPA × 25, which equals (GPA ÷ 4.0) × 100. For example, a GPA of 3.5 converts to 87.5%.
Which grades are not calculated into the Stony Brook GPA?
Grades of P, NC, NR, R, S, U, and W carry no grade points and are excluded from the GPA. Transfer credit grades also do not affect the Stony Brook GPA.
What is the Q grade at Stony Brook?
A Q grade is assigned for academic dishonesty. It remains on the transcript and is computed in the GPA as a grade of F (0.00). An unresolved Incomplete (I) becomes I/F and is also averaged as an F.
Reference: All grading data verified against the Stony Brook University Undergraduate Bulletin — Grading and the Grading System.