GPA Calculator
Grade point average from course scores.
| Course | Credit | Grade |
|---|
Grade point average
0.00
Total credits0
What is GPA?
GPA (Grade Point Average) is a credit-weighted average of your course grades. Each letter grade (A+ through F) is converted to a numeric point, multiplied by the course's credit hours, summed, then divided by total credits.
How to use it
Click Add course to add a row, then set the credit and grade for each course — GPA updates automatically. Choose your school's grade scale (4.5 or 4.3) at the top.
Grade point table
GPA = Σ(grade point × credit) ÷ Σ(credit). A+ is 4.5 on the 4.5 scale, but capped near 4.3 on the 4.3 scale.
Everyday examples
- Averaging three courses: A+(4.5)×3 credits + B+(3.5)×3 credits + A0(4.0)×2 credits → weighted sum = 13.5 + 10.5 + 8.0 = 32.0, total credits 8 → GPA = 32.0 ÷ 8 = 4.00.
- 4.5 vs 4.3 scale: The very same three A+ courses (3 credits each) give a GPA of 4.50 on the 4.5 scale but 4.30 on the 4.3 scale — a gap of up to 0.20, which is why you should state the scale on applications.
- Percentage conversion (rough): To approximate a 4.5-scale GPA as a percentage, use GPA ÷ 4.5 × 100. For example, 3.8 ÷ 4.5 × 100 ≈ 84.4 (conversion tables vary by institution).
- Impact of one F: With only A+(4.5)×3 credits your GPA is 4.50, but adding F(0)×3 credits drops it to weighted sum 13.5 ÷ 6 total credits = 2.25, because the F's credits still count in the denominator.
FAQ
How is GPA calculated?
GPA is the credit-weighted average of grade points: GPA = Σ(grade point × credit) ÷ Σ(credit).
What's the difference between the 4.5 and 4.3 scales?
On the 4.5 scale, A+ equals 4.5 points; on the 4.3 scale, grades are spaced more finely (e.g. B+ = 3.3). Check your school's official scale.
Does an F grade count toward GPA?
Yes. F counts as 0 points, but its credit hours still count in the denominator, lowering your GPA.
How do major GPA and overall GPA differ?
Overall GPA uses every course you've taken; major GPA uses only your major (required/elective) courses, applying the same formula GPA = Σ(point×credit) ÷ Σ(credit). For example, three major courses of A+(4.5)·3 credits, A(4.0)·3 credits and B+(3.5)·3 credits give (13.5+12+10.5) ÷ 9 = 4.00, while liberal-arts courses are excluded from the major GPA.
How does retaking a course affect GPA?
Most schools replace the old grade with the new one but cap it (e.g. A0/4.0). For example, retaking a C+(2.5) and earning A+ still counts as 4.0 if the cap is A0. On a 3-credit course the weighted points rise from 7.5 (2.5×3) to 12.0 (4.0×3), raising your GPA. Exact rules vary by school, so always confirm.
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