Final Grade Calculator
Find the score you need on your final exam.
Your grade in the course so far, before the final.
The final course grade you are aiming for.
How much the final counts toward your course grade.
Results update as you type.
How it works
A final grade calculator answers the question every student asks in the last week of a course: what do I actually need to score on the final exam to end up with the grade I want? You enter three numbers — the grade you hold in the class right now, the overall grade you are targeting, and the percentage of the course the final is worth — and the tool solves for the exam score that gets you there. Behind the scenes it treats your course grade as a weighted blend of everything done so far and the final still to come. The work already banked counts for the remaining share of the course, and the final counts for its stated weight. By fixing your target as the finished result and rearranging that relationship, the calculator isolates the one unknown: the score you must earn on the exam. The number it returns is honest about reality. If it comes back above 100, the target is out of reach no matter how well you do, and it is time to reset expectations or talk to your instructor. If it comes back very low or negative, you have already secured the grade and can walk in relaxed. Students use it to prioritise study time across several courses at once, focusing effort where the required score is highest and the goal is still achievable.
required = (desired − current × (1 − w)) ÷ w, where w = finalWeight ÷ 100
Your final course grade is a weighted average: the work completed so far carries the leftover weight (1 − w) while the final exam carries weight w. Setting that weighted average equal to your desired grade gives desired = current × (1 − w) + finalScore × w. Solving for the only unknown, the final score, means subtracting the already-earned contribution and dividing by the final's weight. A required score above 100 signals the target is mathematically impossible with this exam alone.
Source:Standard weighted-average grading
We review all our tools from time to time to ensure accuracy.
Worked example
How to use this calculator
- 1
Enter your values
Enter current grade, desired overall grade and final exam weight.
- 2
Adjust the options
Fine-tune any options to match your situation.
- 3
Read your result
Score needed on final updates instantly as you type — no button to press.
Frequently asked questions
What does it mean if the required score is over 100%?
It means your target grade is no longer reachable through the final exam alone, because even a perfect score would not lift your average high enough. This usually happens when the final is worth relatively little or your current grade sits well below the goal. Consider whether extra credit is available, adjust your target to a realistic level, or speak with your instructor about your options before the exam.
What if the result is negative or zero?
A negative or zero required score means you have already locked in your desired grade — even scoring nothing on the final would leave you at or above your target. You can walk into the exam with the pressure off. It still pays to attempt the final properly, since a strong score builds a cushion above your goal and protects against any grading surprises or rounding that works against you.
Where do I find my final exam's weight?
The weight is listed in your course syllabus, usually in a grading-breakdown section that assigns a percentage to each category such as homework, quizzes, midterms and the final. If the syllabus lists points instead of percentages, divide the final's points by the total points for the whole course and multiply by 100. When in doubt, ask your instructor directly rather than guessing, since the weight drives the whole calculation.
Does this account for extra credit or a curve?
No. The calculator works from the straightforward weighted-average grading described in your syllabus and does not model extra credit, a class curve, or dropped-lowest-score policies. If your course offers any of those, treat the result as a baseline and adjust. Extra credit effectively lowers the score you truly need, while a harsh curve could raise it. Confirm your instructor's exact policy before relying on the number.
Can I use this if my final is worth 100% of the grade?
Yes. If the final carries the entire course weight, enter 100 and the required score simply equals your desired grade, because nothing else contributes to the result. That situation is rare but does occur in some intensive or pass-fail formats. More commonly the final is one of several weighted components, and the calculator is most useful precisely because it untangles how your existing work and the exam combine.