Current 70%, final worth 30%, want B (80%)
Need 103.3% — not achievable
- Current grade
- 70%
- Final weight
- 30%
- Target grade
- 80% (B)
- Required final score
- 103.3% (impossible)
- Best possible outcome
- 79%
- Minimum guaranteed
- 49%
With 70% going in and a final worth 30%, landing a B (80%) would require a 103.3% on the final — which is impossible with a 100-point scale. Your ceiling is 79% even with a perfect final score. This scenario illustrates why consistent mid-term performance matters: the final alone cannot bridge a 10-point gap when it only accounts for 30% of the grade.
Final Grade Calculator
Find the exact score you need on your final exam to hit your target grade — plus your best- and worst-case outcomes.
- Best possible grade
- 89.5%
- Lowest guaranteed grade
- 59.5%
Calculator
Where the final takes you
How it's calculated
The required final score is derived from the weighted-average course grade formula: course grade = current × (1 − w) + final × w, where w = finalWeight / 100. Rearranging to isolate the final exam score gives: required = (target − current × (1 − w)) / w. The best-case course grade assumes a perfect 100 on the final; the worst-case assumes 0. Both are computed from the same formula with the final score substituted in. Sources: RogerHub Final Grade Calculator (https://rogerhub.com/final-grade-calculator/) and Calculator.net Grade Calculator (https://www.calculator.net/grade-calculator.html).
Sources
Reviewed by the YouCalc Team · Last reviewed
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