The Grade Point Average (GPA) is a widely used metric to represent a student's academic performance. It's a weighted average of the grades received in courses, where the weight is determined by the credit hours or units of each course. A higher GPA generally indicates stronger academic achievement.
Calculating your GPA involves a straightforward process:
Assign Grade Points: Each letter grade is assigned a numerical value (grade point). On a standard 4.0 scale, an 'A' is typically worth 4.0 points, 'B' is 3.0, 'C' is 2.0, 'D' is 1.0, and 'F' is 0.0. Some institutions may use +/- grading systems, which further refine these values (e.g., A- might be 3.7, B+ might be 3.3).
Multiply by Credits: For each course, multiply the grade points earned by the number of credit hours for that course. This gives you the "quality points" for that specific course.
Sum Quality Points: Add up the quality points from all your courses.
Sum Credit Hours: Add up the total credit hours attempted for all courses.
Divide: Divide the total quality points by the total credit hours. The result is your GPA.
This calculator simplifies this process, allowing you to quickly input your course details and get an accurate GPA. It's crucial for academic planning, scholarship applications, and tracking your progress throughout your educational journey.
var courseCount = 1;
function addCourse() {
courseCount++;
var container = document.getElementById('courseContainer');
var newCourseDiv = document.createElement('div');
newCourseDiv.className = 'input-group';
newCourseDiv.innerHTML = `
`;
container.appendChild(newCourseDiv);
}
function calculateGPA() {
var totalQualityPoints = 0;
var totalCreditHours = 0;
var isValid = true;
var errorMessage = document.getElementById('errorMessage');
errorMessage.textContent = "; // Clear previous errors
for (var i = 1; i <= courseCount; i++) {
var creditsInput = document.getElementById('course' + i + '_credits');
var gradeInput = document.getElementById('course' + i + '_grade');
var credits = parseFloat(creditsInput.value);
var grade = parseFloat(gradeInput.value);
// Input validation
if (isNaN(credits) || credits < 0) {
errorMessage.textContent = 'Please enter valid credit hours (non-negative number) for Course ' + i + '.';
isValid = false;
break;
}
if (isNaN(grade) || grade 4.0) {
errorMessage.textContent = 'Please enter a valid grade between 0.0 and 4.0 for Course ' + i + '.';
isValid = false;
break;
}
totalQualityPoints += credits * grade;
totalCreditHours += credits;
}
if (isValid) {
var gpaResultElement = document.getElementById('gpaResult');
if (totalCreditHours === 0) {
gpaResultElement.textContent = '–';
errorMessage.textContent = 'No credit hours entered.';
} else {
var finalGPA = totalQualityPoints / totalCreditHours;
// Format GPA to two decimal places
gpaResultElement.textContent = finalGPA.toFixed(2);
}
} else {
document.getElementById('gpaResult').textContent = '–';
}
}