How does weighted grade calculation work?

Each category (homework, tests, projects) has a weight that totals 100%. Your grade = Σ(category_score × category_weight). A 90% on a 40% weighted test contributes 36% to your final grade.

What grade do I need to pass?

Most schools require a 60-70% (D or C) to pass. Use the "What do I need?" feature to calculate the minimum score required on remaining work.

What if my category weights do not add up to 100%?

The calculator normalizes them automatically, scaling each weight so the total is 100% before computing your grade. This keeps the result valid mid-semester when some categories are unfinished, though your final grade can still shift as remaining weights fill in.

How much will one zero lower my grade?

It depends on that assignment's weight. A missed homework in a category worth 10% of the grade has limited impact; a zero on a 30%-weighted exam is far more damaging. Enter the zero to see the exact drop and what you need on remaining work to recover.

How do I calculate my grade when some work is still ungraded?

Enter only the categories that have scores; the tool weights what you have so far and normalizes those weights to 100%. This gives your current standing. As more grades come in, add them and your projected grade updates and becomes more accurate.

How much does the final exam move my overall grade?

At most, its category weight. If the final is worth 25% of the course, the difference between scoring 0% and 100% on it is 25 percentage points of your overall grade. Use the predictor to see the minimum final score needed for a target letter grade.

Grade Calculator — Calculate Weighted Average

How to use Grade Calculator

The grade calculator computes your weighted course grade from multiple assessment categories — homework, quizzes, midterms, finals — each with its own score and weight. It also predicts what score you need on remaining work to achieve a target letter grade. Simply add categories, enter earned and total points plus percentage weight, and the tool instantly converts to a percentage and letter grade.

Add each grading category (e.g. Homework, Midterm, Final).
Enter your earned points, total points and weight (%) for each category.
Click Calculate Grade.
Review your weighted average, letter grade and predictions for remaining assignments.

Your data never leaves your device — 100% private processing.

Weighted vs unweighted grading

An unweighted average treats all assignments equally. A weighted average assigns different proportions to different assessment types — typically exams count more than homework. The formula is: grade = Σ(percentage_i × weight_i) / Σ(weight_i). If weights don't sum to 100%, the calculator normalises them automatically to produce a valid percentage.

Predicting what you need on remaining work

Once you know your current weighted grade and the weight of remaining assignments, you can solve for the minimum needed score: (target − current_weight × current_pct) / remaining_weight. This is useful before high-stakes assessments to know how much effort is required versus the marginal gain available. If remaining assignments total 20% of the grade, even a perfect score raises the final by at most 20 points.

Worked examples

Three weighted categories

Inputs: HW 90% (20%) · Midterm 80% (30%) · Final 85% (50%)

Result: 84.5% overall · B

Two equal categories

Inputs: Quiz 70% (50%) · Exam 90% (50%)

Result: 80% overall · B−

Glossary

Weighted grade: A grade calculated by multiplying each component's score by its percentage weight.
Letter grade: An alphabetical grade (A–F) representing a range of percentage scores.
Assessment weight: The proportion of the final grade assigned to a specific category or assignment.
Normalisation: Adjusting weights so they sum to 100% when they do not already total correctly.

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Grade Calculator

How to use Grade Calculator

Weighted vs unweighted grading

Predicting what you need on remaining work

Worked examples

Glossary

Related reading

Frequently Asked Questions

Why use Grade Calculator?

Common use cases

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