What is a GPA calculator?
A GPA calculator works out a grade point average by combining the grade and credit value for each course. Instead of treating every class equally, a weighted GPA gives higher-credit courses more influence on the final result. Add your courses, choose a letter grade for each one and enter its credit hours to see the total credits, quality points and GPA on the displayed 4.0 scale.
This tool runs entirely in your browser. The course names, grades and credit hours you enter are not uploaded, stored or shared. It is useful for checking a semester estimate, comparing possible grade outcomes or understanding how a new course might affect a current schedule.
How to use the GPA calculator
- Enter a course name for each row so you can identify it easily.
- Select the letter grade earned or expected for that course.
- Enter the number of credit hours for the course.
- Add more courses as needed, or remove a row you do not need.
- Review the weighted GPA, total credits and total quality points.
The default scale maps A to 4.0, A- to 3.7, B+ to 3.3 and continues down to F at 0.0. A three-credit A contributes 12 quality points, while a three-credit B contributes 9. The calculator adds all quality points and divides by the total credits to find the GPA.
How a weighted GPA is calculated
Each letter grade is converted to a grade-point value. The calculator multiplies that value by the course credits, producing quality points for the course. It then adds the quality points for every course and divides by the total number of credits. This is why a four-credit class affects a weighted GPA more than a one-credit class.
For example, an A in a three-credit course contributes 12 points. A B+ in a three-credit course contributes 9.9 points. If those were the only two courses, the GPA would be 21.9 divided by 6, or 3.65. Entering the correct credit hours matters just as much as choosing the correct grade.
Important GPA scale differences
Schools may use different grade-point values, plus/minus rules, weighted honours or advanced courses, repeated-course policies, transfer credits and rounding methods. Some schools use a 5.0 scale or another system entirely. This calculator uses only its displayed standard 4.0 mapping and does not replace an official transcript calculation. Check your institution's academic handbook, registrar or grade policy when an official GPA is required.