Final Grade Calculator
Work out exactly what you need on your final exam to finish with the grade you want. Enter your current grade, what the final is worth, and your target — the answer appears instantly, along with the arithmetic behind it and the best and worst grades still reachable.
Works offline — your inputs never leave this device. How that works
Common plus/minus convention; many schools use straight letters or different cut points.
You need 110% on the final.
That is above 100%, so 90% is out of reach from the final alone. The highest you can finish with is 88%.
🔢 Show the math
- Work graded so far covers 80% of the course; 20% is still to come.
- Points already banked: 85% × 80% = 68 points of the 100 available.
- To finish at 90% you still need 22 points from the remaining 20%.
- 22 ÷ 20 × 100 = 110% on what is left.
- That is above 100%, so this target is out of reach from the remaining work alone — the best you can still finish with is 88%.
Grading scales vary by institution — your school's own table and syllabus govern. Conversions shown here follow common published conventions.
🎓 Understand this tool
What it is
This works out the score you need on your final exam to finish the course with a particular grade. It answers the question in the direction you actually care about: not "what will I get?" but "what do I have to do?"
How it works
Your course grade is a weighted average. The work already graded covers part of the course and has banked a certain number of points toward 100; the final covers the rest. Subtract the banked points from your target, then divide what is left by the final's share of the grade. That gives the score the final has to earn.
Getting the most from it
- Take your current grade from the course itself rather than estimating it — a running percentage in the gradebook is the number your instructor is working from.
- Find what the final is worth in the syllabus, usually in a grading table near the front. This single input changes the answer more than any other.
- Set the target to the grade you actually need, not the one you want most. Passing, keeping a scholarship, and holding a GPA are different numbers.
- Open "Show the math" and check the arithmetic against your syllabus. If your course rounds, drops a lowest score, or curves, the result here will differ slightly and predictably.
Reading your result
A result at or below 100 is reachable. Above 100 means the target cannot be reached from the final alone, and the "best you can still finish with" figure is the one to plan around. A negative result means you have already secured the target — even a zero on the final leaves you above it.
What it can't tell you
It cannot know your course's rounding rule, whether a lowest score gets dropped, whether a curve is coming, or how late penalties apply. It also assumes the weights in your syllabus are the ones actually in use, which is worth confirming if the number looks surprising.
Frequently asked questions
What do I need on my final to pass?
Enter your current grade, the percentage of the course your final is worth, and the grade you need to pass — usually 60% or 50% depending on the institution. The calculator subtracts the points you have already banked from your target and divides the remainder by the final's weight, which is exactly the arithmetic your instructor does.
What if the answer is above 100%?
Then the target is out of reach from the final alone, and the calculator says so rather than showing an impossible number. It also shows the highest grade you can still finish with, which is the figure worth acting on — either by adjusting the target or by asking about extra credit before the exam rather than after it.
Where do I find what my final is worth?
The course syllabus, usually in a grading table near the front. This is the input people most often guess, and guessing it wrong changes the answer more than any other field — a final worth 40% needs a very different score from one worth 15%, even with identical grades going in.
Does this work for weighted categories?
This calculator treats your current grade as one number, which is right when your course reports a single running percentage. If your syllabus weights categories separately and you want to model them individually, use the weighted grade calculator, then bring the result back here as your current grade.
Is the result my official grade?
No. It is the same arithmetic your instructor uses, but rounding rules, dropped assignments, curves, and late penalties are set by the course and vary widely. Treat the number as a planning figure and confirm anything that matters against the syllabus or your instructor.
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