Calculate Your Weighted Grade

Professional tool to accurately determine your course standing and academic performance.

Grade Calculator

Enter your grades and their corresponding weights (percentages). The calculator will automatically update your results.

Score obtained

Invalid grade

Percent of total

Invalid weight

Score obtained

Invalid grade

Percent of total

Invalid weight

Score obtained

Invalid grade

Percent of total

Invalid weight

Score obtained

Invalid grade

Percent of total

Invalid weight

Score obtained

Invalid grade

Percent of total

Invalid weight

Detailed breakdown of how each assignment contributes to the final weighted grade calculation.

Category	Raw Grade	Weight	Weighted Contribution

What is Calculate Your Weighted Grade?

To calculate your weighted grade is to determine a final academic score based on assignments that have varying levels of importance. Unlike a simple average where every number counts equally, a weighted grade assigns a specific percentage value (weight) to each category—such as homework, quizzes, midterms, and finals.

Students, teachers, and academic advisors frequently use tools to calculate your weighted grade to project final outcomes. This method provides a more accurate reflection of academic performance because it prioritizes major assessments over minor tasks. For example, a final exam worth 40% of the grade impacts your score significantly more than a homework assignment worth 5%.

A common misconception is that you can simply add up all your scores and divide by the number of assignments. This is incorrect for weighted courses. If you do not account for the weights, you may severely overestimate or underestimate your current standing.

Weighted Grade Formula and Mathematical Explanation

The mathematics required to calculate your weighted grade is based on the weighted arithmetic mean. This formula sums the product of each grade and its respective weight, then divides by the sum of all weights.

The Formula:

Final Grade = (w₁g₁ + w₂g₂ + … + w_ng_n) / (w₁ + w₂ + … + w_n)

Where w is the weight of the assignment (usually in percent) and g is the grade achieved.

Variables used to calculate your weighted grade

Variable	Meaning	Unit	Typical Range
g (Grade)	The score achieved on a specific assignment	Percentage (%) or Points	0 – 100+
w (Weight)	The importance of that assignment relative to the whole	Percentage (%)	0 – 100
Σw (Total Weight)	The sum of all weights entered	Percentage (%)	Usually 100

Practical Examples (Real-World Use Cases)

Example 1: The College Course

Consider a Biology student trying to calculate your weighted grade. The syllabus states: Labs (20%), Midterm (30%), and Final (50%).

• Labs: Scored 90% (Weight: 20%)
• Midterm: Scored 80% (Weight: 30%)
• Final: Scored 85% (Weight: 50%)

Calculation: (90×0.20) + (80×0.30) + (85×0.50) = 18 + 24 + 42.5 = 84.5%.

The student's final weighted grade is 84.5% (typically a B). Note how the final exam contributed nearly half the total points.

Example 2: Recovering from a Low Grade

A high school student failed a quiz but aced their homework. They want to calculate your weighted grade to see if they can still get an A.

• Homework: 100% (Weight: 10%)
• Quiz: 50% (Weight: 10%)
• Tests: 95% (Weight: 80%)

Calculation: (100×0.10) + (50×0.10) + (95×0.80) = 10 + 5 + 76 = 91%.

Despite failing the quiz, the high weight of the tests allows the student to finish with a 91% (an A-). This demonstrates why understanding weights is crucial when you calculate your weighted grade.

How to Use This Weighted Grade Calculator

1. Gather Your Syllabus: Locate the weighting percentages for your course (e.g., Exams 40%, Homework 20%).
2. Enter Categories: Input the names of your assignments or categories in the "Assignment / Category" column.
3. Input Grades: Enter the percentage score you received for each item. If you have a raw score (e.g., 45/50), convert it to a percentage first (90).
4. Input Weights: Enter the percentage weight for each category. Ensure the total weight adds up to 100% for a complete semester grade.
5. Review Results: The calculator updates instantly. The "Weighted Average Grade" is your final score. The "Letter Grade" is an estimation based on standard scales.
6. Analyze the Chart: Use the chart to visually see which assignments are carrying your grade.

Key Factors That Affect Your Weighted Grade Results

When you calculate your weighted grade, several financial and academic factors influence the reliability and outcome of the result.

• Weight Distribution: Heavily weighted finals can swing a grade by two letter steps. A 50% weight on a final exam creates high volatility (risk) compared to balanced weighting.
• Missing Assignments: A zero in a weighted category is mathematically devastating. If a category is worth 20%, a zero removes 20 full points from the final grade ceiling (max possible becomes 80%).
• Bonus Points / Extra Credit: Often, extra credit adds raw points to a specific bucket. If added to a low-weight bucket (e.g., homework), the impact on the final grade is minimal due to the weighting factor.
• Grading Scale Variances: Different institutions define "A" differently (e.g., 90% vs 93%). While the math to calculate your weighted grade remains the same, the qualitative result (Letter Grade) may vary.
• Dropped Scores: Some professors drop the lowest quiz score. You must manually exclude that lowest score before entering data to calculate your weighted grade accurately.
• Cumulative Nature: As the semester progresses, the "Total Weight" increases. An early 90% feels safe, but if only 20% of the course is complete, 80% of the grade is still "at risk."

Frequently Asked Questions (FAQ)

Does this calculator handle weights that don't add up to 100%?

Yes. If your current assignments only total 60% (because the final hasn't happened yet), the tool will calculate your weighted grade based on the 60% of work completed so far. This is your "current standing."

How do I convert points to percentages?

Divide your score by the total possible points and multiply by 100. For example, 24/30 becomes (24 ÷ 30) × 100 = 80%. Enter 80 into the grade field.

Can I calculate my GPA with this tool?

No, this tool helps you calculate your weighted grade for a single course. To calculate GPA, you need to combine the final grades of multiple courses along with their credit hours.

What if my professor uses total points instead of weights?

If the syllabus says "Total Points: 1000" and doesn't mention percentages, you don't need a weighted calculator. Simply sum your points and divide by the total points possible.

Why is my weighted grade lower than my average?

This happens if you scored lower on assignments with higher weights. A 90% on homework (10% weight) cannot compensate for a 60% on a test (40% weight).

How does a zero affect a weighted grade?

A zero is multiplied by the weight. If you get a zero on a 20% project, you lose 20 percentage points from your final grade instantly. It is far more damaging than a low passing score.

Can I achieve an A if I failed the midterm?

Use the calculator to model this scenario. Enter your failed midterm grade, then enter hypothetical high scores for the remaining weighted assignments (like the Final) to see if the math allows for an A.

Is the letter grade standard?

The letter grade displayed is based on a standard scale (90=A, 80=B, etc.). Your specific institution may use +/- systems or different cutoffs.

Related Tools and Internal Resources

Expand your academic planning with our suite of financial and educational tools:

maxVal) maxVal = data[i].contribution; // Also check max possible weight contribution to scale Y axis properly var maxPoss = data[i].weight; // since max grade is 100 usually // Actually grade can be > 100. // Let's scale based on weight mostly. if (data[i].weight > maxVal) maxVal = data[i].weight; } if (maxVal === 0) maxVal = 10; var barWidth = (width – 2 * padding) / data.length; var scale = (height – 2 * padding) / (maxVal * 1.1); for (var i = 0; i < data.length; i++) { var item = data[i]; var x = padding + i * barWidth + 10; var w = barWidth – 20; // Draw Max Possible (Weight) background bar var hMax = item.weight * scale; ctx.fillStyle = "#e9ecef"; ctx.fillRect(x, height – padding – hMax, w, hMax); // Draw Actual Earned (Contribution) var h = item.contribution * scale; ctx.fillStyle = "#004a99"; if(item.contribution 8 ? item.name.substring(0,6)+'..' : item.name; ctx.fillText(label, x, height – padding + 15); // Value text ctx.fillStyle = "#fff"; if (h > 20) { ctx.fillText(item.contribution.toFixed(1), x + 5, height – padding – h + 15); } } // Legend ctx.fillStyle = "#004a99"; ctx.fillRect(width – 150, 10, 15, 15); ctx.fillStyle = "#333"; ctx.fillText("Earned Points", width – 130, 22); ctx.fillStyle = "#e9ecef"; ctx.fillRect(width – 150, 30, 15, 15); ctx.fillStyle = "#333"; ctx.fillText("Possible Points", width – 130, 42); } function resetForm() { // Restore defaults from HTML (manually set for robustness) document.getElementById('name_0').value = "Homework"; document.getElementById('grade_0').value = "85"; document.getElementById('weight_0').value = "20"; document.getElementById('name_1').value = "Quizzes"; document.getElementById('grade_1').value = "78"; document.getElementById('weight_1').value = "20"; document.getElementById('name_2').value = "Midterm"; document.getElementById('grade_2').value = "88"; document.getElementById('weight_2').value = "25"; document.getElementById('name_3').value = "Final Exam"; document.getElementById('grade_3').value = "92"; document.getElementById('weight_3').value = "35"; document.getElementById('name_4').value = ""; document.getElementById('grade_4').value = ""; document.getElementById('weight_4').value = ""; calculate(); } function copyResults() { var grade = document.getElementById('finalResult').innerText; var letter = document.getElementById('letterGrade').innerText; var totalWeight = document.getElementById('totalWeight').innerText; var text = "Calculated Weighted Grade:\n"; text += "Final Score: " + grade + "\n"; text += letter + "\n"; text += "Total Weight Accounted: " + totalWeight + "\n"; text += "\nGenerated by Calculate Your Weighted Grade Tool"; var tempInput = document.createElement("textarea"); tempInput.value = text; document.body.appendChild(tempInput); tempInput.select(); document.execCommand("copy"); document.body.removeChild(tempInput); var btn = document.querySelector('.btn-copy'); var originalText = btn.innerText; btn.innerText = "Copied!"; setTimeout(function(){ btn.innerText = originalText; }, 2000); }