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Final Grade Calculator
Calculate exactly what score you need on your final exam to achieve your target course grade. Enter your current grade, final exam weight, and desired grade to get the minimum score needed — and find out if your target grade is still achievable.
This is the most-asked question at the end of every semester: "What do I need on the final to get a B?" Our calculator answers it instantly and also tells you if your goal is still mathematically possible given your current grade.
Formula
Required Final Score = (Target Grade - Current Grade × (1 - Final Weight)) / Final Weight
What If the Required Score is Over 100%?
If this calculator shows you need more than 100% on the final, your target grade is mathematically impossible given your current grade. You have two options: lower your target grade to something still achievable, or check whether extra credit opportunities are available. Sometimes professors offer makeup assignments or curve the final — ask your instructor.
Strategic Final Exam Planning
Scenario
Target
Final Score Needed
95% current, 40% final
B (80%) needed
58.3% on final
80% current, 30% final
A (93%) needed
128.6% — impossible
75% current, 40% final
C (73%) needed
69.2% on final
65% current, 50% final
D (60%) needed
55% on final
88% current, 25% final
A- (90%) needed
94.7% on final
When Is a Grade Mathematically Impossible?
Your target grade becomes impossible when: Required Score = (Target - Current × (1 - Final Weight)) / Final Weight > 100. This happens when your current grade is too far below your target for even a perfect final to bridge the gap. A student with 60% current grade needing 90% overall with a 40% final needs: (90 - 60×0.6)/0.4 = (90 - 36)/0.4 = 135% — impossible.
How to Prepare for Your Final Exam
Study strategies: create a study schedule starting 2 weeks before, focus on high-weighted topics and common exam formats, review all previous exams and quizzes for patterns, form or join study groups, visit professor during office hours to ask about exam focus areas, use spaced repetition for memorization, and simulate exam conditions during practice sessions.
Frequently Asked Questions
Enter your current grade and final exam weight into the calculator. Formula: Required Score = (Target - Current × (1 - FinalWeight)) / FinalWeight. Example: Current 82%, final worth 30%, need 83% (B): (83 - 82×0.7)/0.3 = (83-57.4)/0.3 = 85.3% on the final.
It depends on the remaining course weight and your current grade. If midterm was 25% and you scored 55% (contributing 13.75%), and remaining work including the final is worth 75%, you need an average of (93-13.75)/0.75 = 105.7% on remaining work — generally impossible. Lower your target to a B or C.
The final exam affect = Final Weight × (Score Difference). A 40% final exam: scoring 100% vs 60% changes your course grade by 40% × 40% = 16 percentage points — potentially 2+ letter grades. A 20% final: the same 40-point score difference only changes your grade by 8 points.
Most US colleges require a D (60%) or better to pass a course. However, major courses often require a C (70%) or better. Graduate programs typically require a B (80%) or better in all courses. Some programs have minimum grade requirements for specific prerequisite courses.
Consider withdrawing if: you cannot pass even with a perfect final, the withdrawal deadline has not passed, failing would significantly damage your GPA, and retaking the course would be manageable. A W (Withdrawal) on your transcript is generally preferable to an F. Check with your advisor on financial aid impact.
Missing assignments are typically counted as 0. Recalculate your current grade including zeros for all missing work. This often reveals a much lower current grade than expected. Contact your professor — some accept late work with penalty, and addressing missing work early is always better than waiting until final exam week.