Find out what score you need on your final exam to reach your target grade. Enter your current grade, exam weight, and desired grade.
Finals week is stressful enough without wondering whether you even need to study. This calculator tells you exactly what score you need on your final exam to achieve your desired course grade, taking into account your current grade and the exam's weight.
The formula rearranges the standard weighted grade equation to solve for the unknown exam score. Enter your current grade, the weight of your current grade, and the final grade you're targeting. The calculator does the algebra for you and tells you the minimum final exam score required. If the required score exceeds 100%, the calculator flags that your target is mathematically unachievable.
This tool is one of the most popular academic calculators for good reason: it turns anxiety into actionable information. A student with an 85% who needs a 90% overall with a 25% final knows they need exactly 105% on the final — which means it's time to adjust expectations or talk to the professor about extra credit.
Instead of guessing or stressing, this calculator gives you a concrete number to aim for. It helps you triage your study time across multiple classes: if you only need a 60% on one final but a 95% on another, you know where to focus. It's also a reality check — sometimes the math shows your target grade is still achievable with a moderate exam score, letting you study with confidence rather than panic.
Required Exam Grade = (Desired Grade − Current Grade × (1 − Exam Weight)) ÷ Exam Weight Example: Desired = 90%, Current = 85%, Exam Weight = 30% Required = (90 − 85 × 0.70) / 0.30 = (90 − 59.5) / 0.30 = 101.67%
Result: 101.67%
With a current grade of 85% and a final worth 30%, you would need 101.67% on the final to reach 90% overall. Since this exceeds 100%, achieving an A is not possible through the final exam alone. Targeting an 89% (B+) would require about 94.3%.
The standard final grade formula is: Final = Current × (1 − ExamWeight) + Exam × ExamWeight. Rearranging to solve for the exam score gives: Exam = (Desired − Current × (1 − ExamWeight)) / ExamWeight. This is simple algebra but easy to mess up by hand, especially under exam stress.
If the required exam score exceeds 100%, the target grade cannot be reached through exam performance alone. This happens when the gap between your current grade and your target is too large relative to the exam's weight. For instance, jumping from a 70% to a 90% with a 20% final requires 170% on the exam — impossible.
Run this calculator for every class. Sort the results by difficulty: classes where you only need a 50% on the final require minimal study, while those requiring a 95% demand most of your preparation time. This data-driven approach beats the common strategy of studying whatever feels hardest.
That means your target grade is mathematically impossible through the final exam alone. You'll need to lower your target, find extra credit opportunities, or talk to your professor about other options.
Check your course syllabus for the grading breakdown. The final exam weight is listed as a percentage, usually between 20% and 40%. If unsure, ask your instructor.
Combine them into one "remaining work" weight if they haven't been graded yet. For example, if the final exam is 25% and the final project is 15%, enter 40% as the exam weight and estimate your combined score on both.
Yes, the math is the same. The only difference is that graduate programs often require higher minimum grades (B or 3.0), so adjust your target accordingly.
Enter your grade on all work that has been completed and graded, excluding the final exam. Check your institution's online grade portal for the most accurate number.
Not directly. If your instructor drops the lowest grade, recalculate your current average with that grade removed before entering it here.