Enter your course details to calculate your Grade Point Average (GPA).
A
A-
B+
B
B-
C+
C
C-
D+
D
F
A
A-
B+
B
B-
C+
C
C-
D+
D
F
Your Calculated GPA:
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Understanding Your GPA Calculation
The Grade Point Average (GPA) is a standardized way to measure academic achievement. It's calculated by assigning a numerical value to each letter grade and then averaging these values based on the credit hours (or units) of each course. A higher GPA generally indicates stronger academic performance.
Grade Points: Each letter grade is assigned a numerical value. The most common scale (used in this calculator) is:
A = 4.0
A- = 3.7
B+ = 3.3
B = 3.0
B- = 2.7
C+ = 2.3
C = 2.0
C- = 1.7
D+ = 1.3
D = 1.0
F = 0.0
Some institutions may use slightly different scales or include pluses/minuses differently.
Credit Hours (or Units): This represents the academic weight of a course. A typical 3-credit course contributes more to your GPA than a 1-credit course.
Grade Points * Credit Hours: For each course, you multiply the grade point value of your grade by the number of credit hours for that course. This gives you the "quality points" for that specific course.
Sum of (Grade Points * Credit Hours): You add up the quality points calculated for all your courses.
Total Credit Hours: You add up the credit hours for all the courses you've taken.
Division: Finally, you divide the total quality points by the total credit hours to arrive at your GPA.
Example Calculation
Let's say you took the following courses in a semester:
Mathematics (3 Credits): Grade B (3.0 points)
English Composition (3 Credits): Grade A (4.0 points)
Introduction to Psychology (3 Credits): Grade C+ (2.3 points)
This calculator automates this process, allowing you to quickly see your GPA based on the grades and credits you enter.
Why is GPA Important?
Your GPA is a crucial metric for several reasons:
College Admissions: High schools use GPA to evaluate applicants for higher education.
Scholarship Eligibility: Many scholarships require a minimum GPA to qualify.
Academic Honors: Dean's List, honor roll, and graduation honors are often based on GPA.
Job Applications: Some employers, particularly for entry-level positions, may consider GPA.
Program Requirements: Many academic programs (e.g., graduate school, specific majors) have GPA prerequisites.
Maintaining a strong GPA requires consistent effort, effective study habits, and careful course selection. This calculator can help you track your progress and understand how different grades impact your overall academic standing.
function getGradeValue(grade) {
var value = parseFloat(grade);
if (isNaN(value)) {
return 0; // Default to 0 if parsing fails
}
return value;
}
function calculateGpa() {
var totalQualityPoints = 0;
var totalCredits = 0;
var courseElements = document.querySelectorAll('#courseList .grade-row');
var validInputs = true;
for (var i = 0; i < courseElements.length; i++) {
var gradeSelect = courseElements[i].querySelector('.grade-select');
var creditInput = courseElements[i].querySelector('.credit-input');
var gradeValue = getGradeValue(gradeSelect.value);
var credits = parseFloat(creditInput.value);
if (isNaN(credits) || credits < 0) {
creditInput.style.borderColor = 'red';
validInputs = false;
} else {
creditInput.style.borderColor = '#ced4da'; // Reset border color
}
if (validInputs) {
totalQualityPoints += gradeValue * credits;
totalCredits += credits;
}
}
var gpaResultElement = document.getElementById('gpaResult');
if (totalCredits === 0) {
gpaResultElement.textContent = '–';
} else if (validInputs) {
var gpa = totalQualityPoints / totalCredits;
gpaResultElement.textContent = gpa.toFixed(2); // Display GPA with 2 decimal places
} else {
gpaResultElement.textContent = 'Invalid Input';
}
}
function addCourse() {
var courseListDiv = document.getElementById('courseList');
var newCourseDiv = document.createElement('div');
newCourseDiv.className = 'grade-row';
newCourseDiv.innerHTML = `
A
A-
B+
B
B-
C+
C
C-
D+
D
F
`;
courseListDiv.appendChild(newCourseDiv);
// Recalculate GPA whenever a new course is added to ensure consistency,
// though it's typically triggered by explicit calculation action.
// For this design, calculation is implicit on input change or button click.
}
function removeCourse(button) {
var courseRow = button.parentNode;
courseRow.parentNode.removeChild(courseRow);
calculateGpa(); // Recalculate GPA after removing a course
}
// Add event listeners to recalculate GPA when input values change
document.addEventListener('input', function(event) {
if (event.target.classList.contains('credit-input') || event.target.classList.contains('grade-select')) {
calculateGpa();
}
});
// Initial calculation on page load
window.onload = function() {
calculateGpa();
};