Final Grade Calculator
Figuring out what you need on a final exam is a different question from calculating your current grade — it works backward from a target. Enter your current average, how much the final is worth, and the grade you want to end up with, and this calculator solves for the score you need.
- No sign-up required
- Works backward from your target grade
- Flags unreachable targets instantly
- Free, unlimited use
Final Grade Calculator
Enter your numbers below. Your required final exam score updates as you type.
How This Is Calculated
Solving for the final score you need:
90 = (84 × 0.60) + (Final Score × 0.40)
90 = 50.4 + (Final Score × 0.40)
39.6 = Final Score × 0.40
Final Score = 99%
That's a demanding target — exactly the kind of thing worth knowing three weeks out rather than the night before. If the number comes back above 100%, your target isn't reachable even with a perfect score given how much the final counts; if it comes back negative, you've already secured that grade regardless of the final.
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Frequently Asked Questions
How do I calculate what I need on my final exam?
Take your current average, multiply it by the weight of everything except the final (1 minus the final's weight), subtract that from your target grade, then divide by the final's weight. This calculator does that math for you instantly.
What if the score I need is over 100%?
That means your target grade is not reachable even with a perfect score on the final, given how much weight it carries. You would need a higher score on earlier assignments to make that target possible, or need to adjust your target grade.
What if the score I need is negative or very low?
That means you have already secured your target grade based on your current average alone, regardless of what you score on the final exam.
Where do I find my final exam's weight?
Check your course syllabus. Instructors typically list the exact percentage each grading category (homework, quizzes, midterm, final) contributes to your overall grade.
Does this work for any weighting, not just finals?
Yes. The same formula works for any single remaining assignment or exam that has a known weight, as long as you know your current average and the target grade you want.
Know What You Need Before the Final
Enter your numbers above and find out exactly what score you need — three weeks out, not the night before.
Calculate What I Need