College Clas Weighted Calculator

College Class Weighted Calculator: Calculate Your GPA Accurately :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –input-border-color: #ccc; –card-background: #ffffff; –shadow: 0 2px 4px rgba(0,0,0,0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); margin: 0; padding: 20px; line-height: 1.6; } .container { max-width: 1000px; margin: 20px auto; padding: 25px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); } h1, h2, h3 { color: var(–primary-color); text-align: center; } h1 { font-size: 2.2em; margin-bottom: 15px; } h2 { font-size: 1.8em; margin-top: 30px; margin-bottom: 15px; border-bottom: 2px solid var(–primary-color); padding-bottom: 5px; } h3 { font-size: 1.4em; margin-top: 20px; margin-bottom: 10px; } .calculator-section { margin-top: 30px; padding: 25px; background-color: #fff; border-radius: 8px; 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College Class Weighted Calculator

Calculate your weighted GPA accurately by inputting class credits and the grade received.

GPA Calculator

Enter the total number of classes you are taking.

Your Weighted GPA

–.–
Total Credits:
Total Weighted Points:
Raw GPA (Unweighted):

GPA is calculated by summing the product of (grade points * credits) for each class and dividing by the total credits attempted.

Grade Distribution Analysis

This chart visualizes the weight of each class towards your total GPA.

Class Breakdown

Class Credits Grade Points Weighted Points

What is a College Class Weighted Calculator?

{primary_keyword} is a vital tool for any college student aiming to understand and manage their academic performance. At its core, this {primary_keyword} serves to compute your Grade Point Average (GPA) by taking into account the credit hours assigned to each course and the specific grade you achieve in that course. Unlike a simple average, a {primary_keyword} acknowledges that courses with more credit hours contribute more significantly to your overall GPA. This means a higher grade in a 4-credit course will have a greater impact than the same grade in a 1-credit course. This {primary_keyword} helps demystify the GPA calculation process, empowering students to make informed decisions about their studies and academic planning.

Who Should Use It?

  • Undergraduate Students: Essential for tracking progress, understanding the impact of current grades, and planning for future semesters.
  • Prospective Graduate Students: Many graduate programs heavily weigh undergraduate GPA, making accurate calculation and understanding crucial.
  • Students on Academic Probation: Helps visualize how to improve their GPA and the effort required.
  • Anyone Seeking Clarity: If you've ever wondered "how does my grade in this class affect my GPA?", this tool provides the answer.

Common Misconceptions:

  • GPA is just a simple average of grades: Incorrect. It's a weighted average, with credits acting as the weighting factor.
  • All classes have the same impact: False. A 4-credit course has four times the impact of a 1-credit course if the grading scale is the same.
  • The calculator only shows the final number: A good {primary_keyword} will also show intermediate values like total weighted points and total credits, providing deeper insight.

{primary_keyword} Formula and Mathematical Explanation

The fundamental principle behind the {primary_keyword} is the concept of a weighted average. Each grade a student receives in a college course is assigned a numerical value (grade points), and this value is then multiplied by the number of credit hours for that course. These weighted point totals are summed up for all courses, and then divided by the total number of credit hours attempted. This ensures that courses demanding more academic commitment (higher credit hours) have a proportional influence on the final GPA.

The standard formula for calculating a weighted GPA using a {primary_keyword} is as follows:

Weighted GPA = Σ(Grade Points * Credits) / Σ(Credits)

Step-by-Step Derivation

  1. Assign Grade Points: First, determine the numerical grade point value for the letter grade received in each class. A common scale is A=4.0, B=3.0, C=2.0, D=1.0, F=0.0. Some institutions may use a +/- system (e.g., A-=3.7, B+=3.3), which should be used if applicable.
  2. Calculate Weighted Points per Class: For each class, multiply the assigned grade points by the number of credit hours for that course. (e.g., An 'A' (4.0 grade points) in a 3-credit course yields 4.0 * 3 = 12.0 weighted points).
  3. Sum Total Weighted Points: Add up the weighted points calculated for all classes. This gives you the total weighted points earned.
  4. Sum Total Credits: Add up the credit hours for all classes attempted. This is the total number of credits for which you are being evaluated.
  5. Calculate Weighted GPA: Divide the Total Weighted Points (from step 3) by the Total Credits (from step 4).

Variable Explanations

Understanding the components of the {primary_keyword} formula is key:

Variables Used in GPA Calculation
Variable Meaning Unit Typical Range
Grade The letter grade received in a course (e.g., A, B+, C). Letter Grade A, B, C, D, F (with +/- variations)
Grade Points The numerical equivalent of a letter grade. Points (e.g., 4.0, 3.7, 3.3) 0.0 to 4.0 (standard scale)
Credits The academic weight of a course, typically representing hours per week. Credit Hours 1 to 6 (common; can vary)
Weighted Points The product of Grade Points and Credits for a single course. Point-Hours Varies based on Grade Points and Credits
Total Weighted Points The sum of Weighted Points for all courses. Point-Hours Sum of individual weighted points
Total Credits The sum of Credits for all courses attempted. Credit Hours Sum of individual credits
Weighted GPA The final calculated Grade Point Average. Points 0.0 to 4.0 (standard scale)

Practical Examples (Real-World Use Cases)

Example 1: Standard Semester Load

Sarah is a sophomore taking 4 courses:

  • Calculus I: 4 credits, Grade B (3.0 points)
  • Introduction to Psychology: 3 credits, Grade A (4.0 points)
  • English Composition: 3 credits, Grade B+ (3.3 points)
  • Physical Education: 1 credit, Grade A (4.0 points)

Calculations:

  • Calculus I: 3.0 points * 4 credits = 12.0 weighted points
  • Psychology: 4.0 points * 3 credits = 12.0 weighted points
  • English Comp: 3.3 points * 3 credits = 9.9 weighted points
  • PE: 4.0 points * 1 credit = 4.0 weighted points

Total Weighted Points: 12.0 + 12.0 + 9.9 + 4.0 = 37.9
Total Credits: 4 + 3 + 3 + 1 = 11 credits

Sarah's Weighted GPA: 37.9 / 11 = 3.45

Interpretation: Sarah's GPA is 3.45. Notice how Calculus I, despite a B grade, contributes significantly due to its 4 credits, while PE, with an A grade, has a smaller impact due to its 1 credit.

Example 2: Impact of a Lower Grade in a High-Credit Course

David is taking 3 courses:

  • Organic Chemistry: 5 credits, Grade C (2.0 points)
  • University Physics I: 4 credits, Grade A (4.0 points)
  • History of Art: 3 credits, Grade A (4.0 points)

Calculations:

  • Organic Chemistry: 2.0 points * 5 credits = 10.0 weighted points
  • Physics I: 4.0 points * 4 credits = 16.0 weighted points
  • Art History: 4.0 points * 3 credits = 12.0 weighted points

Total Weighted Points: 10.0 + 16.0 + 12.0 = 38.0
Total Credits: 5 + 4 + 3 = 12 credits

David's Weighted GPA: 38.0 / 12 = 3.17

Interpretation: David's GPA is 3.17. The C in Organic Chemistry (a 5-credit course) significantly pulls down his average, even with two A grades in other substantial courses. This example highlights how crucial strong performance is in high-credit courses. If David had received a B (3.0) in Organic Chemistry, his weighted points would be 3.0 * 5 = 15.0, and his GPA would rise to (15.0 + 16.0 + 12.0) / 12 = 3.17. Oops, correction: (15.0 + 16.0 + 12.0) / 12 = 43.0 / 12 = 3.58. This demonstrates the significant difference a single grade can make.

This {primary_keyword} is essential for understanding such impacts. For more advanced scenarios, consider using a College Credit Transfer Calculator to see how credits from previous institutions might affect your overall academic standing.

How to Use This {primary_keyword} Calculator

Our {primary_keyword} is designed for simplicity and accuracy. Follow these steps to get your weighted GPA:

  1. Enter Number of Classes: Start by inputting the total number of courses you are currently taking or wish to calculate the GPA for.
  2. Input Class Details: For each class, you will see input fields. Enter:
    • Credits: The number of credit hours assigned to the course.
    • Grade: Select the letter grade you received (or expect to receive). The calculator automatically assigns standard grade points (e.g., A=4.0, B=3.0, C=2.0, D=1.0, F=0.0). Ensure your selection reflects your institution's grading scale.
  3. Calculate: Click the "Calculate GPA" button.

How to Read Results:

  • Primary Result (Your Weighted GPA): This is the main number displayed prominently. It represents your overall academic standing based on the inputs.
  • Total Credits: The sum of all credit hours entered.
  • Total Weighted Points: The sum of (Grade Points * Credits) for all courses.
  • Raw GPA (Unweighted): This shows the simple average of your grade points without considering credits, useful for comparison.
  • Class Breakdown Table: Provides a detailed view of each class's contribution, including weighted points.
  • Grade Distribution Chart: Visually represents how each class contributes to your total GPA.

Decision-Making Guidance:

  • Identify Weak Areas: Use the table and chart to see which classes (especially high-credit ones) are dragging your GPA down.
  • Set Improvement Goals: If you aim for a specific GPA, use the calculator to experiment with hypothetical grades and see what's achievable. For instance, calculate the GPA needed to offset a poor grade in a future, high-credit course.
  • Understand Credit Impact: Recognize how crucial strong performance is in demanding, high-credit courses.
  • Plan for Next Semester: Use the {primary_keyword} to estimate the GPA impact of your course load for the upcoming semester. For planning future academic investments, a College Cost Estimator can be invaluable.

Key Factors That Affect {primary_keyword} Results

While the core formula for a {primary_keyword} is straightforward, several external and internal factors can influence your GPA and how it's calculated or perceived:

  1. Credit Hours: This is the primary weighting factor. A higher credit course has a disproportionately larger effect on your GPA than a lower credit course. A 'B' in a 5-credit course impacts your GPA more than a 'B' in a 1-credit course.
  2. Grading Scale Variations: Institutions and even individual departments might use slightly different grading scales. Some use standard 4.0 scales, while others incorporate +/- grades (e.g., A-, B+), which offer finer granularity and affect the precise grade points assigned. Always confirm your school's official scale.
  3. Pass/Fail Courses: Courses taken on a Pass/Fail basis typically do not contribute to your GPA calculation. A 'Pass' is usually just recorded as such, without a grade point value.
  4. Repeated Courses: Policies vary by institution. Some schools average the grades, others replace the old grade with the new one (sometimes with an 'E' notation for repeated), and some may calculate credits attempted differently. This {primary_keyword} assumes standard calculation where all attempted credits and grades contribute unless specified otherwise.
  5. Withdrawal (W) Grades: Courses dropped after the deadline typically receive a 'W' and do not affect the GPA, as no grade points are earned or lost. However, this tool assumes grades are finalized.
  6. Transfer Credits: Credits earned at other institutions may transfer in different ways. Some may transfer as general credits, while others may have specific grade point equivalencies assigned, impacting your overall GPA calculation at the new institution. Consulting a College Credit Transfer Calculator is advised.
  7. Pass/Fail vs. Letter Grade Decisions: Choosing to take an elective as Pass/Fail can protect your GPA if you're struggling, but it means you won't earn credit points that could potentially boost your average if you performed well.
  8. Plus/Minus Grading Systems: The availability of +/- grades (e.g., B+ vs. B) allows for more nuanced GPA calculations. A B+ (3.33 points) is closer to an A than a standard B (3.0 points) is, leading to a higher GPA than if only whole numbers were used.

Frequently Asked Questions (FAQ)

  • What is the standard GPA scale?

    The most common GPA scale in the United States ranges from 0.0 to 4.0. An 'A' grade typically corresponds to 4.0 grade points, 'B' to 3.0, 'C' to 2.0, 'D' to 1.0, and 'F' to 0.0. Many universities also use a +/- system, adding more granular grade points (e.g., A- = 3.7, B+ = 3.3).

  • Does my GPA reset each semester?

    No, your overall GPA (often called cumulative GPA) does not reset. It is a running average of all your coursework throughout your entire college career. Individual semester GPAs are also calculated and often appear on transcripts, but the cumulative GPA is what most graduate programs and employers focus on.

  • How do AP or IB credits affect my GPA?

    This depends on the university's policy. Typically, credits earned through AP or IB exams where you score high enough may grant you college credit but might not be factored into your GPA calculation at the university level. However, if you took an AP/IB course and received a letter grade that is factored into your high school transcript and potentially your college transcript, it would be included. Always check with your academic advisor.

  • What if I get a grade in a course that isn't on the standard scale?

    If your instructor or institution uses a non-standard grading scale (e.g., A=95-100, B=85-94, etc.), you'll need to map those ranges to the closest standard grade points (e.g., 4.0, 3.0, 2.0) or use the exact fractional grade points if provided. This {primary_keyword} uses a common 4.0 scale by default but requires you to select the appropriate letter grade.

  • Can my GPA go up if I get all A's in a semester?

    Yes, if your previous GPA was below 4.0, taking a semester with all A's (and assuming these credits are factored into your cumulative GPA) will generally increase your overall GPA. The extent of the increase depends on the number of credits you take that semester compared to your total credits earned previously.

  • How do plus/minus grades (e.g., B+) affect GPA?

    Plus/minus grading provides more precision. A B+ (typically 3.33 grade points) is higher than a B (3.0 grade points) but lower than an A- (3.67 grade points). Using these finer distinctions leads to a more accurate and potentially higher GPA compared to a system that only uses whole numbers.

  • What does it mean if a course is listed as "3 credits"?

    A 3-credit course generally means it typically meets for three hours per week during the semester. Credit hours are the standard measure of a course's academic weight and are used directly in the GPA calculation to determine how much influence that course's grade has on your overall average.

  • Is it possible to have a GPA lower than 1.0?

    Yes, it is possible. If you receive 'D' grades (typically 1.0 grade point) in high-credit courses or 'F' grades (0.0 grade points) in any courses, your overall GPA can fall below 1.0, especially if these are in courses with a significant number of credit hours.

  • How do I calculate my GPA for a specific semester?

    To calculate a semester GPA, you only use the grades and credits from that specific semester. Sum the weighted points (grade points * credits) for all courses within that semester and divide by the total credits attempted within that semester. Our calculator can be reset and used for a specific semester's courses.

Related Tools and Internal Resources

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var chartInstance = null; function getGradePoints(grade) { if (grade === 'A') return 4.0; if (grade === 'A-') return 3.7; if (grade === 'B+') return 3.3; if (grade === 'B') return 3.0; if (grade === 'B-') return 2.7; if (grade === 'C+') return 2.3; if (grade === 'C') return 2.0; if (grade === 'C-') return 1.7; if (grade === 'D+') return 1.3; if (grade === 'D') return 1.0; if (grade === 'D-') return 0.7; if (grade === 'F') return 0.0; return 0.0; // Default for unrecognized grades } function updateClassInputs() { var numClasses = parseInt(document.getElementById('numClasses').value); var classInputsContainer = document.getElementById('classInputsContainer'); classInputsContainer.innerHTML = "; // Clear previous inputs if (isNaN(numClasses) || numClasses 20) { showError('numClassesError', 'Please enter a number between 1 and 20.'); return; } else { hideError('numClassesError'); } var gradeOptions = ['A', 'A-', 'B+', 'B', 'B-', 'C+', 'C', 'C-', 'D+', 'D', 'D-', 'F']; for (var i = 0; i < numClasses; i++) { var div = document.createElement('div'); div.className = 'input-group'; div.innerHTML = `

Class ${i + 1}

Enter the credit hours for this class.
${gradeOptions.map(grade => `${grade}`).join(")} Select the grade received for this class.
`; classInputsContainer.appendChild(div); } } function validateInputs() { var isValid = true; var inputs = document.querySelectorAll('.class-input'); for (var i = 0; i < inputs.length; i++) { var input = inputs[i]; var errorId = input.id + 'Error'; var errorDiv = document.getElementById(errorId); errorDiv.style.display = 'none'; // Hide all errors initially input.classList.remove('error-border'); var value = input.value; var type = input.type; if (value === '') { errorDiv.textContent = 'This field cannot be empty.'; errorDiv.style.display = 'block'; input.classList.add('error-border'); isValid = false; continue; } if (type === 'number') { var numValue = parseFloat(value); if (isNaN(numValue)) { errorDiv.textContent = 'Please enter a valid number.'; errorDiv.style.display = 'block'; input.classList.add('error-border'); isValid = false; } else if (numValue parseFloat(input.max)) { errorDiv.textContent = `Value must be between ${input.min} and ${input.max}.`; errorDiv.style.display = 'block'; input.classList.add('error-border'); isValid = false; } } } return isValid; } function showError(elementId, message) { var errorDiv = document.getElementById(elementId); if (errorDiv) { errorDiv.textContent = message; errorDiv.style.display = 'block'; document.getElementById(element.id).classList.add('error-border'); } } function hideError(elementId) { var errorDiv = document.getElementById(elementId); if (errorDiv) { errorDiv.textContent = "; errorDiv.style.display = 'none'; } var inputElement = document.getElementById(elementId.replace('Error', ")); if(inputElement) { inputElement.classList.remove('error-border'); } } function calculateGPA() { if (!validateInputs()) { return; } var numClasses = parseInt(document.getElementById('numClasses').value); var totalCredits = 0; var totalWeightedPoints = 0; var classData = []; var gradePointsArray = []; // For chart data for (var i = 0; i 0) { gpa = totalWeightedPoints / totalCredits; rawGpa = gradePointsArray.reduce(function(sum, points) { return sum + points; }, 0) / gradePointsArray.length; if (isNaN(rawGpa)) rawGpa = 0; // Handle case with no classes } document.getElementById('gpaResult').textContent = gpa.toFixed(2); document.getElementById('totalCreditsEarned').querySelector('span').textContent = totalCredits.toFixed(1); document.getElementById('weightedTotalPoints').querySelector('span').textContent = totalWeightedPoints.toFixed(2); document.getElementById('rawGpa').querySelector('span').textContent = rawGpa.toFixed(2); updateTable(classData); updateChart(classData); } function updateTable(data) { var tableBody = document.querySelector('#classDataTable tbody'); tableBody.innerHTML = "; // Clear existing rows for (var i = 0; i < data.length; i++) { var row = tableBody.insertRow(); row.innerHTML = ` Class ${data[i].classNum} ${data[i].credits} ${data[i].grade} (${data[i].gradePoints.toFixed(1)}) ${data[i].weightedPoints.toFixed(2)} `; } } function updateChart(data) { var ctx = document.getElementById('gradeDistributionChart').getContext('2d'); // Destroy previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } var labels = data.map(function(item) { return `Class ${item.classNum} (${item.grade})`; }); var weightedPointsData = data.map(function(item) { return item.weightedPoints; }); var creditsData = data.map(function(item) { return item.credits; }); chartInstance = new Chart(ctx, { type: 'bar', data: { labels: labels, datasets: [{ label: 'Weighted Points Contribution', data: weightedPointsData, backgroundColor: 'rgba(0, 74, 153, 0.6)', borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1 }, { label: 'Credits', data: creditsData, backgroundColor: 'rgba(40, 167, 69, 0.6)', borderColor: 'rgba(40, 167, 69, 1)', borderWidth: 1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Value (Points / Credits)' } } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Contribution of Each Class to GPA' } } } }); } function resetForm() { document.getElementById('numClasses').value = 5; updateClassInputs(); // Re-generate inputs // Set default values for generated inputs var inputs = document.querySelectorAll('.class-input'); for (var i = 0; i < inputs.length; i++) { var input = inputs[i]; if (input.type === 'number') { input.value = (input.id.startsWith('credits')) ? 3 : ''; // Default credits to 3 } else if (input.tagName === 'SELECT') { input.value = 'B'; // Default grade to B } var errorId = input.id + 'Error'; hideError(errorId); } // Clear results document.getElementById('gpaResult').textContent = '–.–'; document.getElementById('totalCreditsEarned').querySelector('span').textContent = '–'; document.getElementById('weightedTotalPoints').querySelector('span').textContent = '–'; document.getElementById('rawGpa').querySelector('span').textContent = '–'; // Clear table document.querySelector('#classDataTable tbody').innerHTML = ''; // Clear chart if (chartInstance) { chartInstance.destroy(); chartInstance = null; } document.getElementById('gradeDistributionChart').getContext('2d').clearRect(0,0,1,1); // Clear canvas } function copyResults() { var gpa = document.getElementById('gpaResult').textContent; var totalCredits = document.getElementById('totalCreditsEarned').querySelector('span').textContent; var weightedTotalPoints = document.getElementById('weightedTotalPoints').querySelector('span').textContent; var rawGpa = document.getElementById('rawGpa').querySelector('span').textContent; var assumptions = "Key Assumptions:\n"; assumptions += "- Standard grading scale (A=4.0, B=3.0, etc.) used.\n"; assumptions += "- All entered classes contribute to the GPA calculation.\n"; assumptions += "- No special grading (Pass/Fail, Audit) considered.\n"; var resultsText = `Your Weighted GPA Calculation:\n\n` + `Weighted GPA: ${gpa}\n` + `Total Credits Earned: ${totalCredits}\n` + `Total Weighted Points: ${weightedTotalPoints}\n` + `Raw (Unweighted) GPA: ${rawGpa}\n\n` + `${assumptions}`; // Temporarily create a textarea to copy text var textArea = document.createElement("textarea"); textArea.value = resultsText; textArea.style.position = "fixed"; // Avoid scrolling to bottom of page textArea.style.opacity = "0"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'Results copied to clipboard!' : 'Failed to copy results.'; // Optional: Display a temporary success/fail message to the user console.log(msg); // Log to console for now } catch (err) { console.error('Unable to copy results', err); } document.body.removeChild(textArea); } // Initial setup document.addEventListener('DOMContentLoaded', function() { updateClassInputs(); // Add event listener for numClasses input to update dynamically document.getElementById('numClasses').addEventListener('input', function() { updateClassInputs(); // Clear results and table if number of classes changes resetForm(); }); // Add event listeners for dynamic validation on inputs document.getElementById('numClasses').addEventListener('blur', function() { var numClasses = parseInt(this.value); if (isNaN(numClasses) || numClasses 20) { showError('numClassesError', 'Please enter a number between 1 and 20.'); } else { hideError('numClassesError'); } }); // Initial calculation on load if defaults are set calculateGPA(); }); // Chart.js initialization placeholder (assuming Chart.js library is loaded elsewhere or will be manually included) // For a self-contained file, we'd need to include Chart.js or use a simpler SVG/canvas approach if Chart.js is not allowed. // Given the constraint "❌ No external chart libraries", a pure SVG or Canvas API approach is needed. // Let's replace the Chart.js logic with a simpler Canvas approach. // — REPLACING CHART.JS with PURE CANVAS — function updateChart(data) { var canvas = document.getElementById('gradeDistributionChart'); var ctx = canvas.getContext('2d'); var width = canvas.width; var height = canvas.height; // Clear canvas ctx.clearRect(0, 0, width, height); if (data.length === 0) { ctx.font = "16px Arial"; ctx.fillStyle = "#666"; ctx.textAlign = "center"; ctx.fillText("No data to display chart.", width / 2, height / 2); return; } var labels = data.map(function(item, index) { return `Class ${item.classNum}`; }); var weightedPointsData = data.map(function(item) { return item.weightedPoints; }); var creditsData = data.map(function(item) { return item.credits; }); var maxWeightedPoints = Math.max(…weightedPointsData); var maxCredits = Math.max(…creditsData); var maxValue = Math.max(maxWeightedPoints, maxCredits); if (maxValue === 0) maxValue = 1; // Avoid division by zero var barWidth = (width – 60) / (data.length * 2); // Space for two bars + gaps var labelHeight = 20; var legendHeight = 40; var chartAreaHeight = height – labelHeight – legendHeight – 20; // Space for y-axis labels and title var yAxisMax = chartAreaHeight; // Y-axis labels and grid lines ctx.font = "12px Arial"; ctx.fillStyle = "#333"; ctx.textAlign = "right"; var numYLabels = 5; for (var i = 0; i <= numYLabels; i++) { var value = Math.round(maxValue * (i / numYLabels)); var yPos = height – legendHeight – (i * chartAreaHeight / numYLabels); ctx.fillText(value.toFixed(1), 40, yPos); ctx.beginPath(); ctx.moveTo(50, yPos); ctx.lineTo(width – 10, yPos); ctx.strokeStyle = "#eee"; ctx.stroke(); } // Draw bars var barSpacing = barWidth * 0.5; var startX = 50; for (var i = 0; i < data.length; i++) { var currentX = startX + i * (barWidth * 2 + barSpacing); // Weighted Points Bar var wpHeight = (weightedPointsData[i] / maxValue) * yAxisMax; ctx.fillStyle = 'rgba(0, 74, 153, 0.6)'; ctx.fillRect(currentX, height – legendHeight – wpHeight, barWidth, wpHeight); // Credits Bar var creditsHeight = (creditsData[i] / maxValue) * yAxisMax; ctx.fillStyle = 'rgba(40, 167, 69, 0.6)'; ctx.fillRect(currentX + barWidth + barSpacing, height – legendHeight – creditsHeight, barWidth, creditsHeight); // Labels below bars ctx.fillStyle = "#333"; ctx.textAlign = "center"; ctx.fillText(labels[i], currentX + barWidth + barSpacing / 2, height – legendHeight + 15); } // Legend ctx.font = "12px Arial"; ctx.textAlign = "center"; // Legend: Weighted Points Contribution ctx.fillStyle = 'rgba(0, 74, 153, 0.6)'; ctx.fillRect(width / 2 – 100, height – legendHeight + 5, 15, 15); ctx.fillStyle = "#333"; ctx.fillText('Weighted Points', width / 2 – 40, height – legendHeight + 17); // Legend: Credits ctx.fillStyle = 'rgba(40, 167, 69, 0.6)'; ctx.fillRect(width / 2 + 50, height – legendHeight + 5, 15, 15); ctx.fillStyle = "#333"; ctx.fillText('Credits', width / 2 + 110, height – legendHeight + 17); // Title ctx.font = "16px Arial"; ctx.fillStyle = "#004a99"; ctx.textAlign = "center"; ctx.fillText("Contribution of Each Class to GPA", width / 2, 15); } // Re-initialize chart after replacing Chart.js logic document.addEventListener('DOMContentLoaded', function() { updateClassInputs(); document.getElementById('numClasses').addEventListener('input', function() { updateClassInputs(); resetForm(); }); document.getElementById('numClasses').addEventListener('blur', function() { var numClasses = parseInt(this.value); if (isNaN(numClasses) || numClasses 20) { showError('numClassesError', 'Please enter a number between 1 and 20.'); } else { hideError('numClassesError'); } }); calculateGPA(); // Initial calculation });

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