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Final Grade Calculator
Calculate the final-exam percentage required to reach a target course grade.
Final Grade Calculator
Required final grade
Enter the values above to calculate.
Formula version 1.0.0
How to use this calculator
- Enter the current course percentage before the final.
- Enter the final exam's percentage weight.
- Enter the target overall course percentage.
- Calculate and check whether the required final score is within a feasible range.
Symbols and units
| Symbol | Meaning | Unit or domain |
|---|---|---|
C | Current grade before the final | % |
w | Final exam weight as a decimal | 0–1 |
T | Target overall grade | % |
F | Required final exam grade | % |
Checked examples
Reach 82 percent
Inputs: Current 80%, final weight 20%, target 82%
Calculation: F = [82 − 80×(1−0.20)] ÷ 0.20
Result: 90% required
A 90 percent final would produce an 82 percent weighted total.
Check: final-grade.test.ts
Impossible target under standard scoring
Inputs: Current 50%, final weight 10%, target 90%
Calculation: F = [90 − 50×0.90] ÷ 0.10
Result: 450% required
The target is not feasible if the final is capped at 100 percent.
Check: final-grade.test.ts
Assumptions, rounding, and limits
- The current grade represents all non-final work.
- The final weight is the remaining share of the course grade.
- All grade values use the same percentage scale.
- Extra credit, category weighting, dropped work, and policy-specific rounding are not modeled.
Frequently asked questions
Why can the required score exceed 100%?
That indicates the target is unreachable under standard scoring and the stated weight.
Does current grade include the final?
No. Enter the grade for the non-final portion only.
Can this model several remaining assignments?
No. It treats the final as one remaining weighted component.
Sources and review
- Google Classroom Help: Set up grading — Weighted grading concepts
- Formula version
- grade.final-required@1.0.0
- Formula review
- Equatara formula review
- Editorial review
- Equatara editorial review
- Last verified
- 2026-10-25
- Applicability
- One remaining weighted final component on a percentage scale.
- Next review
- On material formula/source change, or by 2028-10-25.
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Found a problem?
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