Weighted grade calculator — every point, accounted for.

When a final is worth 40% and homework is worth 10%, a plain average lies to you. Enter each score with its syllabus weight and see your true course grade — plus exactly how many points every assignment contributes.

✓Contribution view. Each row shows the points it actually adds to your final grade.
✓Weights don't total 100 yet? The calculator rescales to the work graded so far and tells you.
✓Private by design. Your numbers never leave your browser.

Weighted Grade Calculator

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Weighted grade

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GPA (4.0 scale)

Add your scores and weights to see your grade.

Assignment	Score %	Weight %	Adds

Use +/− letter grades

Where your grade comes from

Each bar is one assignment's share of the grade you've entered. The number on the right is how many points it adds to your final grade.

Enter a score and a weight to build the breakdown.

What do I need on the rest?

Enter the grade you're aiming for and how much of the course is still ungraded. We'll tell you the average score you need on everything remaining.

Target grade % Weight remaining %

Getting started

How to calculate a weighted grade

Find your syllabus weights

Your syllabus lists how much each category counts — homework, quizzes, exams, projects. Those percentages are the weights you'll enter.

Average each category

If a category holds several scores, average them first: five homework sets at 88, 92, 95, 90 and 85 average to a 90 for the homework row.

Enter score and weight

One row per category or assignment: the percentage you earned and the weight it carries. Names are optional labels for you.

Check the contributions

The “Adds” column and the breakdown bars show the points each row puts into your final grade — the heaviest weights deserve the most study time.

Plan what's left

Use the goal box to see the average you need on the remaining weight to finish at the grade you want.

Only partway through the term? Enter just the categories graded so far. If the weights you've entered add to less than 100, the calculator divides by the weight entered, so you see your grade on completed work — not a grade dragged down by assignments that don't exist yet.

See the math

A worked example, step by step

The calculator above opens with this sample biology course. Watch how the same 85% is worth far more in the labs row than it would be in homework:

Category	Score	Weight	Adds
Homework	92%	10%	92 × 0.10 = 9.20
Labs	85%	20%	85 × 0.20 = 17.00
Quizzes	78%	15%	78 × 0.15 = 11.70
Midterm	84%	25%	84 × 0.25 = 21.00
Final exam	90%	30%	90 × 0.30 = 27.00
Course grade			85.90% → B

A plain average of these five scores would be 85.8% — close here, but only by luck. The weighted grade is higher because the strongest score (the 90 on the final) sits in the heaviest row, while the weakest (78 on quizzes) sits in a light one. Weighting rewards you where it counts.

The weighted-average formula

Weighted grade = Σ (score × weight) ÷ Σ (weight)

Each score is multiplied by its weight, the products are added, and the total is divided by the sum of the weights. A single assignment's contribution is simply score × weight — that's the “Adds” column in the calculator.

Dividing by the total weight is what makes partial information safe: enter 60% of a course and you still get a true grade for that 60%, because both sides of the fraction scale together.

Reference

The standard grading scale

Your weighted percentage becomes a letter using the US scale below. Whole-letter grading uses five wide bands; many schools split them into plus and minus grades for a finer 4.0-scale GPA. Tick Use +/− letter grades in the calculator to grade on this scale.

Letter	Percentage	GPA	What it means
A+	97–100%	4.0	Exceptional
A	93–96%	4.0	Excellent
A−	90–92%	3.7	Excellent
B+	87–89%	3.3	Above average
B	83–86%	3.0	Good
B−	80–82%	2.7	Good
C+	77–79%	2.3	Average
C	73–76%	2.0	Average
C−	70–72%	1.7	Below average
D+	67–69%	1.3	Poor
D	63–66%	1.0	Poor
D−	60–62%	0.7	Minimum pass
F	Below 60%	0.0	Failing

The concepts

Thinking in weights

Weights turn a pile of scores into a strategy. Once you can see each category's contribution, you know where an hour of studying buys the most grade — and which low score you can safely stop worrying about.

Weight is leverage

A category's weight is its leverage over your grade. Improving a 40%-weighted final by 10 points adds 4 points to your course grade; the same improvement in a 5%-weighted homework category adds half a point. The breakdown bars make that leverage visible at a glance.

Partial weights still work

Mid-semester, your graded weights might total only 55%. Dividing the contributions by 55 instead of 100 rescales them into a true “grade so far” — the same number your gradebook shows. Nothing about the method changes when the rest of the course lands; the weights just grow toward 100.

Categories vs. single assignments

Most syllabi weight categories, not individual items. Enter one row per category with that category's average score. If your teacher instead weights a single big project or exam on its own, give it its own row — the math is identical either way.

Watch out

Common weighted-grade mistakes

Entering weights as decimals in one row and percents in another.

Pick one format — this calculator expects percents (40, not 0.40). Mixing the two makes one category nearly vanish and another swallow the grade.

Averaging the category averages.

A simple mean of your category scores ignores the weights entirely. Five categories at 90, 90, 90, 90 and 50 average to 82 — but if the 50 sits in a 40% exam category, your real grade is far lower.

Typing zeros for work not yet graded.

A zero is a real score as far as the math is concerned. Leave future assignments out until they're graded, and let the rescaling show your grade on completed work.

Using last year's syllabus weights.

Teachers quietly rebalance categories between terms. A final that was 30% last year may be 40% now — check the current syllabus before trusting the result.

Forgetting participation and attendance.

Many courses hide 5–10% of the grade in participation. Leave that row out and your weights top out at 90 — the calculator rescales, but your “grade so far” quietly assumes a perfect participation score.

Answers

Weighted grade questions

How do I calculate a weighted grade?

Multiply each assignment's score by its weight, add all of those products together, then divide by the total weight. For example, a 90% midterm worth 30% contributes 90 × 0.30 = 27 points toward your final grade. The calculator on this page does it live as you type.

What if my weights don't add up to 100%?

That usually means part of the course hasn't been graded yet. The calculator divides by the weight you have actually entered, so the result is your grade on the work completed so far. When the remaining assignments are graded, add them and the weights will total 100.

Where do I find the weights for my class?

Weights are listed in your course syllabus, usually in a grading breakdown table near the start (for example: Homework 10%, Quizzes 15%, Midterm 25%, Final 40%, Participation 10%). If your teacher uses an online gradebook like Canvas or Schoology, the category weights are often shown on the grades page too.

What is the difference between a weighted and an unweighted grade?

An unweighted (simple) average treats every assignment equally: add the scores and divide by how many there are. A weighted average multiplies each score by its category weight first, so a final exam worth 40% counts far more than a homework set worth 5%. Most college and high-school syllabi grade on the weighted system.

Can one assignment really change my grade that much?

It depends on its weight. A 10-point swing on an assignment worth 40% moves your course grade by 4 full points. The same swing on something worth 5% moves it by half a point. The contribution column in the calculator shows exactly how many points each assignment adds, so you can see where your effort counts most.

How do I handle a dropped lowest grade?

Leave the dropped score out of the calculator entirely. If your teacher drops the lowest quiz, delete that row (or clear its score) so the average matches the official gradebook. The weight of the remaining quizzes in that category stays the same — only the dropped score disappears.

My class uses points, not weights. Can I still use this?

A points-based gradebook is just weighting by another name: each assignment's share is its points possible divided by the total points possible. You can enter those shares as weights here, or use the dedicated points grade calculator, which takes raw points earned and possible directly.

Does this work for college and high school?

Yes. Weighted averaging is the same math at every level. The only difference between schools is the letter-grade scale, and you can switch the plus/minus scale on or off right in the calculator to match yours.

Why the breakdown matters

A single percentage hides the story of your grade. The contribution breakdown shows it: which categories are carrying you, which one is quietly dragging you down, and where the remaining points in the course actually live. That's the difference between hoping for a grade and planning for one.

Results are estimates based on the weights and grading scale you enter, so always confirm your official grade against your teacher's syllabus or your school's gradebook.

Keep going

Related grade tools

Your weighted average answers “where do I stand?” These tools answer the questions that usually come next.