Free Weighted Grade Calculator Online
Not all assignments count the same. This free weighted grade calculator lets you enter each assignment with its score and weight, then computes your final average — plus shows a pie chart breaking down exactly how much each component influences your grade. Use this free online weighted grade calculator all semester. No account required.
Assignment Breakdown
Overall Grade
Letter Grade: B−
Weight Distribution
Score vs Weighted Contribution
How Weighted Grades Are Calculated
The formula behind every weighted grade calculator is a weighted average: multiply each assignment's score by its weight, add all those products together, then divide by the total weight. Written as a formula: weighted average = Σ(grade × weight) ÷ Σ(weight). When weights sum to exactly 100%, the divisor is simply 100.
Here is a concrete walkthrough using the default values in this weighted grade calculator — Homework 88% × 10%, Midterm 74% × 30%, Project 91% × 20%, Final Exam 82% × 40%:
Step-by-step example
Homework: 88 × 10 = 880
Midterm: 74 × 30 = 2,220
Project: 91 × 20 = 1,820
Final Exam: 82 × 40 = 3,280
Sum = 8,200 ÷ 100 = 82.0% (B−)
Notice that the midterm score of 74% pulls the average down significantly because it carries 30% of the total grade, while the homework score of 88% barely moves the needle at 10%. This is why knowing your weights matters. If your weights don't sum to 100% — say you only have 80% entered — the weighted grade calculator divides by 0.80 instead of 1.0, normalizing to a proportional result automatically. This keeps the grade accurate even mid-semester when some assignments are still incomplete.
Reading the Weight Distribution Chart
1. Pie Chart Shows Proportional Impact
Each slice represents what percentage of your final grade that assignment controls. A 40% final exam slice takes up nearly half the pie — it dwarfs a 10% homework slice.
2. High-Weight Slices Matter Most
In the default example, the Final Exam slice (40%) controls nearly half the grade. A single point improvement on the final is worth four times as much as the same improvement on the homework.
3. Normalized Weights
If your entered weights only add to 80%, the weighted grade calculator divides by 0.8 — not 1.0 — to produce a proportional result. The pie chart reflects the relative share of each assignment within whatever weights you've entered.
4. What the Bar Chart Shows
The bar chart plots two values side-by-side: the raw score percentage (blue) and the weighted contribution to your final grade (amber). A high score on a low-weight assignment yields a short amber bar despite a tall blue bar.
Strategies to Protect Your Weighted Grade
Front-Load High-Weight Work
A strong midterm (30%) can absorb a weak homework week (10%). Identify your highest-weight assignments on day one and prioritize accordingly.
Never Skip High-Weight Assignments
A zero on a 40%-weighted final caps your maximum possible grade at 60%. Even a partial submission beats a zero every time. This weighted grade calculator makes that impact painfully visible.
Use This Weighted Grade Calculator Weekly
Track your grade as assignments come back, not just at finals. Early data lets you catch a downward trend before it's too late to act on it.
Calculate What You Need
Enter 0 for remaining assignments to see your floor; enter 100 to see your ceiling. The Desired Final Grade field then shows the exact score you need to hit your target.
Weighted vs Unweighted Grades
An unweighted grade is a simple average — add all your assignment scores together and divide by the number of assignments. Every quiz counts the same as every exam. You'll encounter this in some high school courses and point-based systems where a 100-point exam and a 100-point quiz carry identical weight because they have the same point value.
A weighted grade, which is what this weighted grade calculator computes, assigns each component a percentage of the final grade regardless of raw point value. Consider this: a 95% on homework worth 10% contributes just 9.5 points to your average, while a 75% on a final worth 40% contributes 30 points. The final matters four times as much in this weighted grade calculator — even though both grades are expressed as percentages of the same 100-point scale. Whenever a syllabus says "the final exam is worth 40% of your grade," that is a weighted system, and you need a weighted grade calculator — not a simple average — to track it accurately.
40%
The weight a final exam commonly carries in a college course — more than any other single assignment in most syllabi. One exam that controls nearly half your grade.
0
The grade impact of skipping a high-weight assignment. A zero on a 40%-weighted final caps your maximum weighted grade at 60% — no matter how well you do elsewhere.
Day 1
The syllabus handed out on the first day of class defines exactly how your weighted grade is calculated — it's the most important document you'll receive all semester.
Frequently Asked Questions
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