GPA Calculator
Add each course's letter grade and credit hours to calculate your overall GPA on the standard 4.0 scale.
About the GPA Calculator
GPA (Grade Point Average) is a credit-weighted average, not a simple average of your grades — a common source of confusion, since a single 4-credit A course affects your GPA more than a single 1-credit A course does. This tool handles that weighting automatically: enter each course's letter grade and credit hours, and it computes the true weighted average rather than treating every course equally.
How the math works
Each course's grade points (A = 4.0, B+ = 3.3, and so on down the standard 4.0 scale) are multiplied by its credit hours. Those results are summed across all courses, then divided by the total credit hours — not the number of courses. A 3-credit A (12 points) and a 1-credit A (4 points) contribute very differently to the final average, exactly as they should.
A note on grading scales
Not every institution uses the same 4.0-scale grade-point values, and some use a 5.0 or a country-specific scale entirely. If your institution's scale differs, the underlying credit-weighting logic here still applies — you'd just need to substitute your institution's specific grade-point values for each letter grade.
Frequently Asked Questions
What grading scale does this use?
The standard US 4.0 scale: A=4.0, A-=3.7, B+=3.3, B=3.0, B-=2.7, C+=2.3, C=2.0, C-=1.7, D+=1.3, D=1.0, D-=0.7, F=0.0. If your institution uses a different scale, the weighted-average logic still applies but the grade points won't match exactly.
How is GPA calculated?
Each course's grade points are multiplied by its credit hours, these are summed across all courses, then divided by the total credit hours — a credit-weighted average, not a simple average of grades.