Grade Calculator
Work out your weighted grade and what the final needs.
Current grade
84.83%
Letter grade B
Weights entered
60%
Normalised if not 100
Assignments
3
What do I need on the final?
Score needed on the final
97.8%
to finish on 90%
Already banked
50.90%
60% of the course is graded
required = (target − current × (1 − final weight)) ÷ final weight = (90 − 50.90) ÷ 0.40
What does Grade Calculator do?
Calculate your current grade from weighted assignments, then find out exactly what you need on the final exam to reach the grade you want. It handles any set of weights, tells you when a target is out of reach, and converts the result to a letter grade.
How to Use Grade Calculator
- 1Enter your scoresOne row per assignment, with its score and weight.
- 2Read your current gradeThe weighted percentage and letter grade update live.
- 3Set a targetEnter the grade you want and the weight of the final.
- 4See what you needThe required final score is calculated exactly.
Key Features
- Weighted categories — homework, quizzes, midterms and finals in any mix
- Current grade as a percentage and as a letter
- Final-exam calculator: the exact score needed for a target grade
- Warns when a target is mathematically unreachable
- Handles weights that do not add up to 100% by normalising them
Frequently Asked Questions
How do I calculate a weighted grade?
Multiply each score by its weight, add the results, then divide by the total weight. A 90% worth 20% of the course contributes 18 percentage points, while the same score worth 5% contributes only 4.5.
What grade do I need on the final exam?
It is the target grade minus what you have already banked, divided by the weight of the final. This tool does that arithmetic and tells you plainly if the number comes out above 100%, meaning the target is no longer reachable.
What if my weights do not add up to 100%?
The calculation normalises them, treating them as proportions of whatever total you entered. That is what you want mid-term, when some categories have not been graded yet.
Which letter grade scale is used?
The common American scale: 90 and above is an A, 80 a B, 70 a C, 60 a D, below that an F, with plus and minus bands at the edges. Institutions vary, so treat the letter as a guide and the percentage as the real answer.
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