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BestGPACalculator
Course average tool

Grade Calculator

Add your scored categories with weights and get a live course percentage plus letter grade. Works for any class with a weighted syllabus — high school, college, or AP.

No signupMobile-first5 weighting scales
Your weighted GPA
4.42
Unweighted: 3.86
APAP Calculus BC
A
HONHonors English
A-
REGChemistry
B+
Live Update
Match your school
5 scales built-in
Weighted course average
83.40%B
Weight total: 100
Assignment / CategoryScoreOut ofWeight (%)%
88.0%
82.0%
78.0%
85.0%
Updated Reviewed by BestGPACalculator Editorial TeamMethodology →

How a weighted grade calculator works

Definition
Weighted grade

A weighted grade is a course average where each category (homework, quizzes, tests, projects, final) contributes a different share of the total. A 100% on a quiz worth 5% of your grade moves your average less than a 100% on a midterm worth 25%.

Most courses do not treat every assignment equally. A syllabus typically splits the final grade across a handful of categories with explicit weights — for example: homework 20%, quizzes 15%, midterm 25%, final 40%. Your weighted grade is the weighted average of your percentage in each of those buckets.

Formula
Σ (category % × weight) ÷ Σ weights
Weights usually sum to
100 (but the math works either way)
Letter scale used
10-point (93+ = A, 90-92 = A-, 87-89 = B+ …)
Common categories
Homework, quizzes, tests, projects, participation, final

Worked example

Suppose your syllabus splits the grade as: homework 20%, quizzes 15%, midterm 25%, final 40%. Your scores are 88% homework, 82% quizzes, 78% midterm, 85% final. The weighted average is:

(88 × 20) + (82 × 15) + (78 × 25) + (85 × 40)
= 1760 + 1230 + 1950 + 3400
= 8340
÷ 100
= 83.4%  →  B

Without weighting (simple average of 88, 82, 78, 85) you would get 83.25% — close, but the weighting tilted slightly toward the final exam pulling the average up.

When to use each mode

After you know your grade

Once you have a letter grade for the course, plug it into a GPA calculator alongside your other classes to see how this course affects your cumulative GPA. If you are debating effort levels across courses, the GPA goal calculator shows what you need across remaining work to hit a target cumulative GPA.

Frequently asked questions

What is a grade calculator?

A grade calculator computes your current course average from your individual scores. Most courses weight categories differently — homework might be 20%, tests 40%, and the final 30% — so a weighted grade calculator multiplies each category percentage by its weight and divides by the total weight.

How do I calculate my grade with weighted categories?

Convert each category to a percentage (your score ÷ max score × 100), multiply by the category weight, sum those products, and divide by the total weight. Our calculator does it live — just enter score, max, and weight for each row.

What if the weights do not add to 100?

The calculator still works — it divides the weighted total by the actual sum of weights. But if your syllabus says weights should equal 100 and yours do not, double-check the syllabus to make sure you have not missed a category.

How do I find out my course's grade weighting?

Check the syllabus first — every course should list the grading breakdown. If it does not, your school's learning portal (Canvas, Blackboard, PowerSchool) usually shows category weights under the gradebook setup.

What letter grade is 89%?

Under the common US 10-point scale, 89% is a B+ (B+ range is 87–89%). 90% crosses into A- territory. Some schools use a 7-point scale where 86–92% is a B — check your school's policy.

How is this different from a GPA calculator?

A grade calculator gives you the percentage and letter grade for one course. A GPA calculator converts letter grades across multiple courses into a 4.0 scale grade-point average. Use the grade calculator first to know your course letter, then use a GPA calculator to combine letters across all your classes.