Final Grade Calculator
Wondering what grade do I need on my final? Enter your current grade, the grade you want, and how much your final exam is worth — this final grade calculator tells you the exact score you need, and shows what happens at every other score too.
Even a perfect 100% on the final would leave you at 89.5%. Aim for the highest score you can: every point on the final still lifts your course grade.
What happens if you score…
| Final exam score | Your course grade | Letter grade |
|---|---|---|
| 0% | 59.5% | F |
| 50% | 74.5% | C |
| 60% | 77.5% | C+ |
| 70% | 80.5% | B- |
| 80% | 83.5% | B |
| 90% | 86.5% | B |
| 100% | 89.5% | B+ |
Highlighted rows reach your target of 90%.
How the final grade calculator works
Your course grade is a weighted average of the work you have already done and the final you have not taken yet. If your current grade is C, your final is worth w of the course, and you want to finish with D, the score you need is:
Needed = (D − C × (1 − w)) ÷ w
Example: you are on 85%, you want 90%, and the final is worth 30% (so w = 0.30). Needed = (90 − 85 × 0.70) ÷ 0.30 = (90 − 59.5) ÷ 0.30 = 30.5 ÷ 0.30 = 101.7% — just out of reach. But look at the outcome table instead: scoring 95% on that final gives 85 × 0.70 + 95 × 0.30 = 88%, a solid B+. Knowing the real numbers early lets you aim at the target that is actually achievable — or find out that your A is safer than you feared.
Three situations you will run into
- Needed score between 0% and 100% — a real target. Plan your revision around it.
- Needed score above 100% — the target cannot be reached through the final alone. Maximise your score anyway; the table shows the best grade still available to you.
- Needed score at or below 0% — you have already secured your target. The final can only help you.
Still building your current grade from individual assignments? Start with the grade calculator — it works out your current weighted grade and includes a quick version of this final-grade goal box.
Frequently asked questions
What grade do I need on my final to get an A?
It depends on your current grade and how much the final is worth. Enter both above with a target of 90%. Example: with an 88% current grade and a final worth 30%, you need (90 − 88×0.70) ÷ 0.30 = 94.7% on the final to finish with an A.
How much will a 60 affect my grade if I have a 94?
Multiply your final score by the final's weight and your current grade by the rest. If the final is worth 20%: 94×0.80 + 60×0.20 = 87.2%, so your grade drops from 94% to 87.2% — a B+. If the final is worth 40%: 94×0.60 + 60×0.40 = 80.4%, a B-. The heavier the final, the bigger the swing — try it in the table above.
What is the final grade formula?
Needed score = (desired grade − current grade × (1 − final weight)) ÷ final weight. And the reverse: your course grade after the final = current × (1 − weight) + final score × weight. Both formulas run automatically in this calculator.
My needed score is over 100%. What does that mean?
That target is mathematically out of reach: even a perfect final cannot lift your average enough. The calculator shows your maximum possible grade instead. It is still worth scoring as high as you can — every point on the final adds its weight to your course grade — and some teachers round borderline grades or offer extra credit.
My needed score is 0% or negative. Am I safe?
Yes — your current grade is high enough that your target is already secured even with a 0 on the final. The calculator still shows the score needed to merely pass (60%), so you can see your full safety margin.
Where do I find my final exam's weight?
Your course syllabus lists the grading breakdown — look for a line like 'Final exam: 30%'. If the syllabus gives categories (exams 50%, homework 30%, final 20%), use the final's own percentage. If your remaining work includes more than just the final, add up the weights of everything still to come and use that total.
Is this the same as an exam grade calculator?
Yes — this final exam grade calculator works for any last assessment: a final exam, final project or final paper. Enter its weight and the grade you want, and it returns the score you need.