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Weighted Grade Calculator

Calculate your semester average based on weighted assignments and exams.

Total Weight Accounted For: 0%
Weighted Average: 0%
Letter Grade Estimate: F
* Note: Your total weight does not equal 100%. The calculation is normalized to the current weight sum.

Understanding Weighted Grades: A Comprehensive Guide

In modern education, not all assignments are created equal. Unlike a simple average where every number counts the same, a weighted grade system assigns different levels of importance to various categories of your coursework. This calculator helps you navigate this complexity to understand exactly where you stand in your class.

How Weighted Grades Work

A weighted grade is calculated by multiplying the score of each assignment by its respective weight, summing these products, and then dividing by the total weight. This method is standard in college courses and advanced high school classes (AP/IB).

For example, consider a course syllabus structured as follows:

  • Homework: 15% of total grade
  • Quizzes: 25% of total grade
  • Midterm Exam: 30% of total grade
  • Final Exam: 30% of total grade

If you scored a 90% on homework, 80% on quizzes, and 75% on your midterm, your current grade isn't just the average of 90, 80, and 75. The homework has less impact than the midterm. Using our calculator allows you to input these specific weights to see your "True" average.

The Math Behind the Calculation

The formula used in this Weighted Grade Calculator is:

Weighted Grade = (Σ (Grade × Weight)) / (Σ Weights)

Using the example above (before the final exam):

  • (90 × 15) + (80 × 25) + (75 × 30) = 1350 + 2000 + 2250 = 5600
  • Total Weight so far = 15 + 25 + 30 = 70
  • Current Grade = 5600 / 70 = 80% (B-)

Strategic Grade Management

Using a weighted grade calculator is crucial for finals week planning. By leaving the "Grade" field blank for your Final Exam and adjusting the numbers, you can determine exactly what score you need to maintain an A or pass the class. This is often referred to as "What if" analysis.

Frequently Asked Questions

What if my weights don't add up to 100%?
This often happens during the semester before all assignments are graded. This calculator automatically normalizes your score based on the weight entered so far, giving you your current standing.

How do I handle points vs percentages?
If your syllabus uses points (e.g., 500 total points), you can use a simple points calculator. However, if your teacher says "Tests are 40% of the grade," you must convert your test scores to a percentage (Score / Total Possible) before entering them here alongside the weight.

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`; container.appendChild(newRow); } function clearWgForm() { var inputs = document.querySelectorAll('.wg-calc-wrapper input'); for (var i = 0; i < inputs.length; i++) { inputs[i].value = ''; } document.getElementById('wg-result').style.display = 'none'; } function calculateWeightedGrade() { var gradeInputs = document.getElementsByClassName('wg-grade'); var weightInputs = document.getElementsByClassName('wg-weight'); var totalWeightedScore = 0; var totalWeight = 0; var hasData = false; for (var i = 0; i = 97) letterGrade = 'A+'; else if (finalAverage >= 93) letterGrade = 'A'; else if (finalAverage >= 90) letterGrade = 'A-'; else if (finalAverage >= 87) letterGrade = 'B+'; else if (finalAverage >= 83) letterGrade = 'B'; else if (finalAverage >= 80) letterGrade = 'B-'; else if (finalAverage >= 77) letterGrade = 'C+'; else if (finalAverage >= 73) letterGrade = 'C'; else if (finalAverage >= 70) letterGrade = 'C-'; else if (finalAverage >= 67) letterGrade = 'D+'; else if (finalAverage >= 63) letterGrade = 'D'; else if (finalAverage >= 60) letterGrade = 'D-'; else letterGrade = 'F'; // Display Results var resultBox = document.getElementById('wg-result'); var weightDisplay = document.getElementById('wg-total-weight'); var avgDisplay = document.getElementById('wg-average-score'); var letterDisplay = document.getElementById('wg-letter-grade'); var warningDisplay = document.getElementById('wg-warning'); resultBox.style.display = 'block'; weightDisplay.innerHTML = totalWeight.toFixed(2) + '%'; avgDisplay.innerHTML = finalAverage.toFixed(2) + '%'; letterDisplay.innerHTML = letterGrade; if (Math.abs(totalWeight – 100) > 0.1) { warningDisplay.style.display = 'block'; } else { warningDisplay.style.display = 'none'; } }

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