Two weighted percents
Input
80% at weight 20 and 90% at weight 80Output
88%(80 × 20 + 90 × 80) ÷ 100 = 8,800 ÷ 100 = 88.
Weighted Average Grade Calculator
Combine homework, quizzes, and exams by percent and weight, by letter, or by points. The result is one course average, not a GPA.
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Weighted average grade calculator
By Muhammad Abdullah Rauf · Founder, EverydayTools.proUpdated 2026-10-24
How do you calculate a weighted grade average?
A weighted grade average gives more influence to items with a larger weight. Percentage mode uses the percent you enter and the weight of that assessment. Letter mode first turns each letter into the minimum percent on the scale you set, then uses the same weighted formula. Points mode ignores separate weights and divides total points earned by total points possible. The normalized average uses only the rows you filled in. Remaining course weight is 100 minus the weights you have already entered.
Weighted average, letters, and points
Percentage and letter modes share one weighted-average formula. Points mode is earned divided by possible. Target planning does not change the average of the grades already entered.
Formula
Normalized average = Σ(grade × weight) ÷ Σ(weight)
Remaining course weight = 100 − completed weight
Points percent = earned ÷ possible × 100
Future item = (target × (completed weight + future weight) − earned weight points) ÷ future weightAssumptions
- Empty rows are ignored.
- A letter equals the minimum percent of that letter on the scale you set.
- Remaining course weight assumes the course weights are meant to total 100.
Limitations
- This is not a credit-weighted GPA.
- If weights already total more than 100, there is no remaining course weight to plan.
- A required score above 100% means the target cannot be reached on that item.
- Dropped scores, extra credit, and curves are not applied automatically.
How to use the average grade calculator
Choose percentage, letter, or points
Use percentage when you already have percents and weights. Use letters when the grade book shows A–F. Use points when each item has earned and maximum points.
Add each assessment
Enter the grade and its weight, or the earned and maximum points. Remove blank rows you do not need.
Read the normalized average
Completed weight is the sum of the weights you entered. Remaining course weight is 100 minus that sum.
Plan a target in percentage mode
Enter the average you want and the weight of a future item, or read the score needed on the weight still left in a 100-point course.
Weighted grade examples
Equal letter grades
Input
A and B at equal weight, default scaleOutput
85%A counts as 90 and B counts as 80. (90 + 80) ÷ 2 = 85, which is a B.
Points
Input
45 earned out of 50Output
90%45 ÷ 50 × 100 = 90, an A on the default scale.
Who uses Weighted Average Grade Calculator?
Common real-world scenarios where this tool saves time.
Students
Combine homework, quizzes, and a midterm
Enter each percent and the syllabus weight to see the normalized average before the final is scored.
Teachers
Explain a letter-only grade book
Letter mode shows that an A is counted as the minimum percent you set, so a student can see the assumption behind the average.
Students
Total a points grade book
Add earned and maximum points from several items. Forty-five out of 50 is 90% without inventing a separate weight.
Common mistakes to avoid
Treating the normalized average as a finished course grade
The average uses only the weights you entered. Remaining to 100 is the weight not yet included.
Counting a letter as the middle of its range
Letter mode uses the lowest percent of the letter. A default A is 90, not 95.
Leaving one side of a row blank
Each used row needs both a grade and a weight, or both earned points and a maximum. Fully empty rows are skipped.
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Frequently Asked Questions
How do you calculate a weighted average of grades?
Multiply each percent by its weight, add the products, and divide by the sum of the weights. An 80 worth 20 and a 90 worth 80 is (1,600 + 7,200) ÷ 100 = 88.
What does remaining course weight mean?
It is 100 minus the weights you have already entered. The normalized average does not require those weights to total 100. Remaining weight is only the gap if the course is planned on a 100-point weight scale.
How does letter mode turn an A into a percent?
It uses the minimum percent next to that letter. On the default scale an A is 90, a B is 80, a C is 70, and a D is 60. Edit the minimums if the class uses different cuts. This is not the midpoint of the range.
How is a points grade different from a weighted percent?
Points mode adds earned points and maximum points, then divides. A 45 out of 50 is 90%. You do not enter a separate weight because the maximum points already set the size of that item.
What score do I need on the next assignment?
In percentage mode, enter the average you want and the weight of the future item. The calculator solves the percent that item must earn. If that result is above 100%, the target is out of reach at that weight. A single final exam fits the final grade calculator more directly.
Is a weighted course average the same as a GPA?
No. This page weights assignments inside one course. GPA multiplies each course's grade points by its credit hours, then divides by the credits. A 4-credit A and a 1-credit C do not average the same way as two equal course weights.
Privacy, accuracy, and trust
Privacy
Grades and weights stay in your browser and are not uploaded.
Your syllabus controls rounding, dropped scores, and extra credit. This page does not replace the grade book.
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Reviewed on 2026-10-24.
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