Current 90%, final worth 30%, want A (93%)
Need 100% on the final
- Current grade
- 90%
- Final weight
- 30%
- Target grade
- 93% (A)
- Required final score
- 100%
- Best possible outcome
- 93%
- Minimum guaranteed
- 63%
At 90% with a final worth 30%, the only path to an A (93%) is a perfect 100% on the final: (93 − 90 × 0.70) ÷ 0.30 = (93 − 63) ÷ 0.30 = 100. It is technically achievable, but leaves no room for error. If you score 99, your course grade lands at 92.7%, narrowly missing the A threshold. Your guaranteed floor even with a zero on the final is 63%.
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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