The basic GPA idea
GPA is usually calculated by converting each letter grade into grade points, multiplying by course credits, adding the results, and dividing by the total number of credits.
The exact scale can vary by school, so always compare your result with your institution's grading policy. A calculator helps with arithmetic, but your school's rules decide the official number.
Why credits matter
A high-credit course affects GPA more than a low-credit course. For example, a four-credit course usually has twice the weight of a two-credit course.
That is why a simple average of grades may not match your official GPA. Weighted calculation is important when classes have different credit values.
GPA, CGPA, and percentages
GPA usually describes performance for a term or selected set of courses. CGPA often describes cumulative performance across multiple terms. Percentage conversions depend heavily on local grading rules.
Use GPA Calculator for course-level calculations, CGPA Calculator for cumulative planning, and GPA to Percentage Converter only as an estimate unless your school publishes an official conversion method.
How to use the result
A GPA estimate can help you plan study priorities, understand what final grades you need, or prepare application materials. It should not be treated as an official transcript.
If the number matters for scholarships, graduation, or applications, verify it with your school portal or academic office.