High School GPA Calculator
Calculate your unweighted and weighted grade point average quickly and accurately.
Course Name (Optional)
Grade
Credits
Course Weight
A
A-
B+
B
B-
C+
C
C-
D+
D
F
Regular
Honors (+0.5)
AP / IB (+1.0)
×
A
A-
B+
B
B-
C+
C
C-
D+
D
F
Regular
Honors (+0.5)
AP / IB (+1.0)
×
YOUR CUMULATIVE GPA
0.00
Unweighted
0.00
Weighted
0.00
Total Credits
0
How High School GPA is Calculated
GPA, or Grade Point Average, is a numerical representation of your academic performance in high school. Most US high schools use a 4.0 scale where an 'A' equals 4 points, a 'B' equals 3, a 'C' equals 2, and a 'D' equals 1 point.
The Basic Formula:
To calculate your unweighted GPA, you take the point value for each grade, add them together, and divide by the total number of classes taken. If classes have different credit values (e.g., a half-credit elective), you multiply the grade point by the credit value before adding them up, then divide by the total credits.
Weighted vs. Unweighted GPA
While the standard unweighted GPA tops out at 4.0, many high schools use a Weighted GPA system to reward students for taking more difficult courses.
- Unweighted GPA: Treats every class the same, regardless of difficulty.
- Honors Courses: Often add an extra 0.5 points (an 'A' becomes a 4.5).
- AP or IB Courses: Often add a full 1.0 point (an 'A' becomes a 5.0).
Real-World Example
Imagine a student taking four classes:
- AP Biology: A (4.0 unweighted + 1.0 weight = 5.0) – 1 Credit
- Honors English: B (3.0 unweighted + 0.5 weight = 3.5) – 1 Credit
- Math: A (4.0 unweighted) – 1 Credit
- PE: A (4.0 unweighted) – 0.5 Credit
Unweighted Calculation: ((4*1) + (3*1) + (4*1) + (4*0.5)) / 3.5 credits = 3.71 GPA
Weighted Calculation: ((5*1) + (3.5*1) + (4*1) + (4*0.5)) / 3.5 credits = 4.14 GPA
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container.appendChild(row);
}
function calculateHSGPA() {
var rows = document.getElementsByClassName('course-row');
var totalUnweightedPoints = 0;
var totalWeightedPoints = 0;
var totalCredits = 0;
for (var i = 0; i < rows.length; i++) {
var grade = parseFloat(rows[i].querySelector('.grade-val').value);
var credits = parseFloat(rows[i].querySelector('.credit-val').value);
var weight = parseFloat(rows[i].querySelector('.weight-val').value);
if (isNaN(credits) || credits 0) {
totalUnweightedPoints += (grade * credits);
// Only apply weight bonus if the grade is not an F (most schools don't weight Fs)
var weightedGrade = grade > 0 ? (grade + weight) : grade;
totalWeightedPoints += (weightedGrade * credits);
totalCredits += credits;
}
}
var unweightedGPA = totalCredits > 0 ? (totalUnweightedPoints / totalCredits) : 0;
var weightedGPA = totalCredits > 0 ? (totalWeightedPoints / totalCredits) : 0;
document.getElementById('final-gpa-display').innerText = weightedGPA.toFixed(2);
document.getElementById('unweighted-display').innerText = unweightedGPA.toFixed(2);
document.getElementById('weighted-display').innerText = weightedGPA.toFixed(2);
document.getElementById('total-credits-display').innerText = totalCredits;
document.getElementById('gpa-result-display').style.display = 'block';
// Scroll to result smoothly
document.getElementById('gpa-result-display').scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}