GPA Calculator
Compute your grade point average on a 4.0 scale, weighted by course credits.
Inputs
Example: A:3, B+:4, C:3 — use letter grades A+ through F.
GPA (4.0 scale)
3.33
Total Credits
15.0
Courses Counted
5
Step by step
Map each letter grade to grade points (4.0 scale)
A = 4.0, B+ = 3.3, B = 3.0, A- = 3.7, C+ = 2.3
Sum of (grade points × credits) for all courses
4.0 × 3 + 3.3 × 4 + 3.0 × 3 + 3.7 × 3 + 2.3 × 2 = 49.90
= 49.90 quality points
Total credits
= 15.0 credits
GPA = total quality points ÷ total credits
49.90 ÷ 15.0
= 3.33
How it works
Each letter grade maps to grade points on a 4.0 scale (A = 4.0, B = 3.0, and so on). Your GPA is the sum of grade points times credits for every course, divided by your total credits.
Formula
GPA = Σ(grade points × credits) ÷ Σ(credits)
- gᵢ
- Grade points for course i on the 4.0 scale (A = 4.0, A− = 3.7, B+ = 3.3 …)
- cᵢ
- Credit hours for course i
Frequently Asked Questions
What grade scale is used?
A standard unweighted U.S. 4.0 scale with plus/minus steps (A = 4.0, A− = 3.7, B+ = 3.3, etc.). Weighted/AP scales differ by school.
How do I enter my courses?
List each course as grade:credits, separated by commas — for example 'A:3, B+:4, C:3'. Credits weight each grade in the average.