Grades matter, and calculating a weighted GPA by hand invites mistakes, especially when courses carry different credit-hour weights and grading scales side by side. The GPA calculator lets you add each course with its letter grade and credit hours, then computes your weighted grade point average automatically as you add, edit or remove rows from the list.
It uses the standard 4.0-scale grade points used by most US high schools and colleges, and the whole calculation runs in your browser — no course names, grades or school information is ever sent anywhere. The total and credit count update instantly as you type, so you can plan a target GPA before finals.