The Grade Point Average (GPA) is a standardized way of evaluating your academic performance. It's calculated by taking the average of the grade points earned across all your courses, weighted by the number of credits each course is worth. A higher GPA generally indicates stronger academic achievement.
How the GPA is Calculated:
The GPA is calculated using the following formula:
GPA = Total Grade Points / Total Credits Attempted
Here's a breakdown of the steps involved:
Grade Points per Course: For each course, you first determine the grade points earned. This is typically done by multiplying the credit hours of the course by the grade point value of the grade received. For example, a grade of 'A' might be worth 4.0 grade points, 'B' worth 3.0, and so on. If a course is worth 3 credits and you receive an 'A' (4.0 grade points), you earn 3 credits * 4.0 grade points/credit = 12 grade points for that course.
Total Grade Points: Sum up the grade points earned from all courses you have taken.
Total Credits Attempted: Sum up the total number of credit hours for all courses you have taken.
Calculate GPA: Divide the Total Grade Points by the Total Credits Attempted.
This calculator simplifies the process. You can add courses one by one, specifying the credits and the grade points for each. The calculator will keep track of your cumulative total credits and grade points, updating your overall GPA with each addition. You can also reset the calculator if you need to start over.
Note: Different educational institutions may have slightly different grading scales and GPA calculation methods (e.g., how +/- grades are weighted, or how withdrawal/incomplete grades affect GPA). This calculator uses a standard model where you input the grade point value directly.
var totalGradePoints = 0;
var totalCredits = 0;
var courseCount = 0;
function updateResultDisplay() {
var resultSpan = document.querySelector('#result span');
if (totalCredits === 0) {
resultSpan.textContent = "N/A";
document.getElementById('result').style.backgroundColor = 'var(–medium-gray)'; // Grey out if no data
} else {
var gpa = (totalGradePoints / totalCredits).toFixed(2); // Display GPA to 2 decimal places
resultSpan.textContent = gpa;
document.getElementById('result').style.backgroundColor = 'var(–success-green)'; // Reset to success color
}
}
function addCourseAndCalculate() {
var creditsInput = document.getElementById('newCourseCredits');
var gradePointsInput = document.getElementById('newCourseGrade');
var credits = parseFloat(creditsInput.value);
var gradePoints = parseFloat(gradePointsInput.value);
// Input validation
if (isNaN(credits) || credits <= 0) {
alert("Please enter a valid positive number for course credits.");
return;
}
if (isNaN(gradePoints) || gradePoints < 0) { // Grade points can be 0 for an F, but not negative
alert("Please enter a valid non-negative number for grade points (e.g., 4.0 for A, 3.0 for B, 0.0 for F).");
return;
}
totalGradePoints += (credits * gradePoints);
totalCredits += credits;
courseCount++;
updateResultDisplay();
// Clear the input fields for the next entry
creditsInput.value = '';
gradePointsInput.value = '';
creditsInput.focus(); // Set focus back to credits for easier next entry
}
function resetCalculator() {
totalGradePoints = 0;
totalCredits = 0;
courseCount = 0;
document.querySelector('#result span').textContent = "N/A";
document.getElementById('result').style.backgroundColor = 'var(–medium-gray)'; // Grey out if no data
// Clear any dynamically added course rows if implemented in future versions
// For this version, we only reset totals and inputs
document.getElementById('newCourseCredits').value = '';
document.getElementById('newCourseGrade').value = '';
}
// Initial display update on page load
document.addEventListener('DOMContentLoaded', function() {
updateResultDisplay();
});