A CGPA calculator is a tool that is used to calculate a student's cumulative grade point average (CGPA) based on their performance in courses taken over a specific period. It is a common tool used by universities and colleges to measure a student's academic performance and progress.

To use a CGPA calculator, a student typically inputs the grades they have received in their courses, along with the number of credit hours assigned to each course. The calculator then automatically calculates the student's CGPA, which is a weighted average of all the grades earned in their courses, taking into account the credit hours assigned to each course.

The formula used by a CGPA calculator is typically as follows:

CGPA = (Sum of (Grade Point x Credit Hours)) / (Total Credit Hours)

Here, the grade point is a numerical value assigned to each grade, usually on a scale of 0 to 4.0, with 4.0 being the highest possible grade point. The grade point is multiplied by the number of credit hours assigned to each course, and the sum of these values is divided by the total number of credit hours.

Overall, a CGPA calculator is a useful tool for students and institutions alike, providing an objective measure of academic performance and progress.