Weighted Grade Calculator
Use our free Weighted Grade Calculator to quickly calculate your course grade based on category weights like homework, tests, and projects. Enter your grades and the weight for each category—when weights total 100%, you'll see your final course grade; otherwise you'll see your current weighted average for what you've entered.
This tool supports both percentage grades and letter grades and works for high school, college, and university grading systems. All calculations run in your browser—no data is stored.
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0 / 10Enter your categories and
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What is a Weighted Grade?
A weighted grade is a grading system where different categories of assignments contribute different percentages to your final course grade. Instead of all assignments counting equally, some categories—such as exams or projects—are given greater importance.
For example, a course might use the following weights:
In this case, the final exam has the largest impact on the final grade. Weighted grading systems are widely used in high schools, colleges, and universities because they reflect the relative importance of different types of assessments.
Weighted Grade Formula
The formula for calculating a weighted grade is:
Each category grade is multiplied by its weight, and all weighted values are added together to calculate the final score.
Example calculation
How to Calculate a Weighted Grade
Follow these simple steps to calculate your weighted course grade:
- List each grading category from your course syllabus.
- Enter the weight percentage for each category.
- Input your grade for each category.
- Multiply each grade by its weight.
- Add all weighted values to get your final grade.
Instead of doing these calculations manually, you can use the weighted grade calculator above to instantly compute your overall grade.
How to Calculate Final Grade from Weighted Categories
To find your final course grade from weighted categories, you need three things: the categories from your syllabus (e.g., Homework, Quizzes, Tests, Final Exam), the weight percentage for each, and your average grade within each category.
First, compute the average score for each category separately. If you have five homework assignments (85, 90, 88, 92, 87), that category average is 88.4. Do the same for quizzes, tests, and any other categories. Then multiply each category average by its weight and add the results. The sum is your final weighted grade.
This calculator automates that process: enter each category name, its weight (%), and either your numerical average or a letter grade. When weights total 100%, the result is your final course grade.
How to Use Letter Grades in Weighted Grading
You can enter letter grades (A+, A, A−, B+, B, C−, etc.) directly into the calculator. It converts them to percentage values using a standard U.S. scale—for example, B+ becomes 88%, A becomes 94.5%—and applies the weighted formula.
This is helpful when your syllabus or LMS shows letter grades for each category but you want to see the overall percentage or letter. The conversion table on this page matches the logic used by the calculator, so you can verify the mapping.
If your school uses a different letter scale (e.g., no A+ or different cutoffs), the result may differ slightly. In that case, enter percentage averages instead of letters for more accuracy.
What If Weights Don't Add to 100%?
If you enter only some of your categories—for example, Homework 20% and Quizzes 20% because tests and the final exam haven't been graded yet—the calculator shows your current weighted average for the categories you've entered, not a final course grade.
When total weights are less than 100%, the result is normalized: it reflects how you're doing in the graded portion so far. Once you add all categories and weights total 100%, the result becomes your projected final grade.
The calculator displays a note when weights don't total 100%, so you always know whether you're seeing a current snapshot or a final grade.
Current Grade vs Final Projected Grade
Current grade (or current weighted average) is what you have so far—based only on categories that have been graded. If only homework and quizzes are done, your current grade reflects just those.
Final projected grade assumes all categories are complete and weights total 100%. It's the grade you would get if you kept the same performance in every category.
To project your final grade before exams, enter your current averages for graded categories and use placeholder grades (e.g., your goal or a previous test average) for categories not yet completed. Set weights to 100% total to see the projected outcome.
Example Weighted Grade Calculation
Let's calculate a weighted course grade using the following example:
| Category | Weight | Grade | Contribution |
|---|---|---|---|
| Homework | 30% | 92% | 27.6 |
| Tests | 40% | 85% | 34 |
| Projects | 30% | 90% | 27 |
Letter Grade Scale Used by This Calculator
This calculator uses the following scale to convert between percentages and letter grades. When you enter a letter grade (e.g., B+), it converts to the midpoint of the percentage range for calculations.
| Letter Grade | Percentage Range |
|---|---|
| A+ | 97–100% |
| A | 93–96% |
| A− | 90–92% |
| B+ | 87–89% |
| B | 83–86% |
| B− | 80–82% |
| C+ | 77–79% |
| C | 73–76% |
| C− | 70–72% |
| D+ | 67–69% |
| D | 63–66% |
| D− | 60–62% |
| F | 0–59% |
Important: Grading scales vary by school, district, and course. Some schools cap the highest grade at A (4.0) with no A+. Others use different percentage cutoffs. Always verify your course syllabus or LMS for the exact scale used in your class.
Common Mistakes When Calculating Weighted Grades
Students often make mistakes when calculating weighted grades manually. The most common errors include:
- Forgetting to convert weights into percentages.
- Adding grades instead of multiplying them by weights.
- Using assignment grades instead of category averages.
- Ignoring dropped or lowest scores.
Using an automated calculator eliminates these errors and ensures accurate results.
Why Teachers Use Weighted Grading Systems
Weighted grading systems allow instructors to emphasize the most important learning outcomes in a course. Exams, final projects, and major assignments often represent deeper understanding and therefore receive higher weights.
This approach encourages students to focus on important assessments while still rewarding consistent performance on smaller assignments.
Weighted Grade vs Unweighted Grade
Unweighted grading treats every assignment equally. If you have 10 assignments, each counts 10%. Your grade is a simple average of all scores.
Weighted grading assigns different importance to different categories. A final exam might count 35% while homework counts 15%. High-stakes assessments have more impact on your final grade.
Most high school and college courses use weighted grading. Check your syllabus to see the exact weights. This calculator is designed for weighted courses; for a simple average, use an average grade calculator instead.
Why Your Calculator Result May Differ From Your LMS
Your school's Learning Management System (Canvas, Google Classroom, Schoology, etc.) may show a different grade than this calculator. Common reasons include:
- Dropped or lowest scores: Many LMSs automatically drop the lowest quiz or homework. You need to recompute the category average yourself before entering it here.
- Extra credit: Some systems add bonus points in non-standard ways. This calculator applies only the basic weighted formula.
- Rounding: LMSs may round at different stages (per assignment, per category, or at the end).
- Missing work as zero: If your policy counts missing assignments as 0, include that when computing your category average.
For the best match, compute each category's average exactly as your syllabus describes (including drops and zeros), then enter those averages and weights here.
How We Calculate Your Result
This calculator uses the standard weighted average formula: each category grade is multiplied by its weight, and the products are summed. When weights total 100%, the result is your final course grade. When they don't, we show your current weighted average for the categories entered.
Letter grades are converted using the scale documented on this page (A+ = 97–100%, A = 93–96%, etc.). Schools vary—if yours uses a different scale, enter percentage values instead for accuracy.
All calculations run in your browser. We don't store or transmit your grades. For more academic tools, see our Teacher Tools hub.
Last updated: March 2026
Frequently Asked Questions
What is a weighted grade?
A weighted grade calculates your final score by multiplying each category grade by its assigned percentage weight. Categories with higher weights (e.g., final exam) have more impact than those with lower weights (e.g., homework).
Do weights need to add up to 100%?
For a final course grade, yes—weights should total 100%. If you enter only some categories (e.g., mid-term grades), the calculator shows your current weighted average for what you've entered, not a final grade.
Can I use letter grades in the calculator?
Yes. The calculator converts letter grades (A+, A, B+, etc.) to percentage values automatically using the scale shown on this page. Enter either numbers or letters.
What happens if weights don't add to 100%?
The calculator shows your current weighted average for the categories entered. A note appears when weights are incomplete so you know you're seeing a snapshot, not a final grade.
What's the difference between current grade and final grade?
Current grade reflects only the categories that have been graded so far. Final grade assumes all categories are complete and weights total 100%. Use current grade to see mid-term progress; use final grade when everything is done.
Weighted vs unweighted grading—what's the difference?
Unweighted means every assignment counts equally. Weighted means some categories (exams, projects) count more than others. Most high school and college courses use weighted grading; check your syllabus for exact weights.
Why does my result differ from my school's LMS?
LMSs may drop lowest scores, add extra credit, or round differently. This calculator uses the basic weighted formula. For the best match, compute each category average exactly as your syllabus describes (including drops and zeros) before entering.
Is this calculator accurate?
Yes. It uses the standard weighted average formula. Letter grades are converted using the documented scale. Grading policies vary by school—verify your syllabus if your scale differs.
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