Weighted Grade Calculator

Enter your assignment categories, grades, and weights below. Your weighted average updates instantly.

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Grade Breakdown by Category

What Do I Need Calculator

Calculate what score you need on a remaining assignment to achieve your target grade.

Current Weighted Grade (%)

Target Grade (%)

Weight of Current Work (%)

Weight of Remaining Work (%)

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You need to score -- on the remaining work to achieve your target grade.

This score is not achievable. Your target grade may not be possible with the remaining work.

How Weighted Grades Work

Weighted grades give different importance to different assignments or categories. Instead of treating all assignments equally, each category has a weight that reflects its contribution to your final grade.

Weighted Average = Sum(Grade x Weight) / Total Weight

Example: Percentage-Based Weighting

Suppose your course has the following grading structure:

Category	Your Grade	Weight	Contribution
Homework	92%	20%	18.4
Quizzes	88%	15%	13.2
Midterm Exam	85%	25%	21.25
Final Exam	90%	40%	36.0
		100%	88.85

Your final grade = 88.85% (B+)

Notice how the Final Exam, worth 40%, has the biggest impact on your overall grade. Even though you scored 92% on Homework, it only contributes 18.4 points because it's weighted at just 20%.

Example: Points-Based Weighting

Some instructors use a points system instead of percentages:

Assignment	Points Earned	Points Possible	Percentage
Homework 1	45	50	90%
Homework 2	48	50	96%
Quiz 1	18	20	90%
Midterm	85	100	85%
Total		220	89.5%

Total = 196 / 220 = 89.5%

In a points-based system, each assignment's weight is determined by how many points it's worth relative to the total. The 100-point midterm automatically weighs more than the 20-point quiz.

Standard Letter Grade Scale

This calculator uses the standard US grading scale to convert percentages to letter grades.

Letter Grade	Percentage Range	GPA Equivalent
A+	97-100%	4.0
A	93-96%	4.0
A-	90-92%	3.7
B+	87-89%	3.3
B	83-86%	3.0
B-	80-82%	2.7
C+	77-79%	2.3
C	73-76%	2.0
C-	70-72%	1.7
D+	67-69%	1.3
D	60-66%	1.0
F	Below 60%	0.0

Note: Grading scales vary by institution. Always check your syllabus for the specific scale used in your course.

Common Weighting Scenarios

Traditional College Course

Homework: 20%
Quizzes: 15%
Midterm Exam: 25%
Final Exam: 40%

High School Class

Daily Assignments: 30%
Projects: 20%
Tests: 30%
Final Exam: 20%

Lab Course

Lab Reports: 40%
Quizzes: 20%
Midterm: 20%
Final Project: 20%

Participation-Heavy Course

Participation: 25%
Presentations: 25%
Written Assignments: 30%
Final Project: 20%

Frequently Asked Questions

How do you calculate a weighted grade?

Multiply each grade by its weight, sum the products, then divide by the total weight. For example, if Homework (30%) is 90 and Exams (70%) is 80, the weighted grade is (90 x 0.30 + 80 x 0.70) / (0.30 + 0.70) = 83.

What is the difference between weighted and unweighted grades?

Unweighted grades treat all assignments equally regardless of importance. Weighted grades assign different importance (weights) to different categories. For example, a final exam worth 40% of your grade counts more than homework worth 10%.

Do weights have to add up to 100%?

No, but they typically should for a complete course grade. If weights do not add up to 100%, the calculator normalizes them. Some instructors use point-based systems where each assignment has a point value instead of a percentage weight.

How do I calculate what I need on my final exam?

Use the formula: Required Score = (Desired Grade - Current Weighted Grade x (1 - Final Weight)) / Final Weight. For example, if you have 85% weighted and the final is worth 30%, to get 90% overall you need: (90 - 85 x 0.70) / 0.30 = 101.7%, which is not possible.

What if my teacher drops the lowest grade?

If your instructor drops the lowest score, simply exclude that grade from your calculation. Only enter the grades that will count toward your final average.

How do extra credit points work in weighted grading?

Extra credit typically adds points to a specific category rather than your overall grade. For example, if extra credit adds 5 points to your homework category, add those points to your homework score before calculating the weighted average.

Can I use this for high school GPA calculation?

This calculator is designed for individual course grades. For overall GPA across multiple courses with different credit weights, use our GPA Calculator instead.

What is the difference between points-based and percentage-based weighting?

Percentage-based weighting assigns each category a fixed percentage (e.g., exams = 40%). Points-based weighting assigns point values to each assignment, and the weight is determined by the proportion of total points. Both methods produce the same type of weighted average.

Tips for Managing Your Grade

Focus on high-weight categories: A small improvement in a heavily-weighted category (like a final exam) has more impact than perfecting a low-weight category.
Track your progress early: Don't wait until the end of the semester to calculate your grade. Regular tracking helps you identify problems while there's still time to improve.
Use the "What do I need?" calculator: Before a major exam, calculate what score you need to reach your target grade. This helps you set realistic study goals.
Understand your syllabus: Make sure you know the exact weights for each category. Some instructors split categories (e.g., Exam 1 and Exam 2 might have different weights).
Ask about dropped grades: Many instructors drop the lowest homework or quiz score. Factor this into your calculations.
Check for rounding policies: Some instructors round up at 0.5, others at 0.9, and some don't round at all. Know your instructor's policy.

Related Tools

GPA Calculator -- Calculate your overall GPA from multiple courses
Final Grade Calculator -- Find out what you need on your final exam
Grade Calculator -- Calculate grades with custom weighting
Percentage Calculator -- Convert between percentages and decimals
Average Calculator -- Calculate simple and weighted averages