Grade Calculator

GPA (Grade Point Average) is calculated using a weighted average formula: GPA = Sum(grade_points * credit_hours) / Sum(credit_hours). Each letter grade maps to a numeric value on the selected scale. On a 4.0 scale: A=4.0, B=3.0, C=2.0, D=1.0, F=0.0 On a 4.3 scale: A+=4.3, A=4.0, A-=3.7, B+=3.3, ... On a 4.5 scale: A+=4.5, A=4.0, A-=3.5, B+=3.3, ... The tool multiplies each course's grade points by its credit hours, sums these products, and divides by the total credit hours. This produces a weighted GPA that accounts for the relative importance of each course. Input validation prevents negative credit hours, NaN values, and ensures at least one valid course entry before calculation.

1. Select your grading scale (4.0, 4.3, or 4.5). 2. Enter your first course: select the grade and enter credit hours. 3. Click "Add Course" to add more courses. 4. Your cumulative GPA is calculated automatically. 5. Remove individual courses with the delete button. 6. The tool shows both the weighted GPA and total credits.

4.0 Scale: The most common scale in US universities. A=4.0 is the highest possible GPA. Used by most graduate school admissions. 4.3 Scale: Includes plus/minus gradations. A+=4.3 allows students to exceed 4.0. Common in some Canadian and US institutions. 4.5 Scale: Used in some Korean and international universities. A+=4.5 provides even finer grade differentiation. Cumulative GPA vs Semester GPA: Cumulative GPA considers all courses across all semesters. Semester GPA only considers courses in a single semester. This tool calculates based on the courses you enter, so it can serve both purposes.