Education
GPA, grades & study calculators
Final Grade Calculator
The score you need on the final exam to hit your target grade. Accurate, instant and free — for United States.
To finish the course at 90%, you need 94.67% on the final, which is worth 30% of your grade.
Required on final
94.67%
Current grade
88.00%
Final worth
30.00%
| Letter | Course target | Score needed on final |
|---|---|---|
| A | 90% | 94.67% |
| B | 80% | 61.33% |
| C | 70% | 28.00% |
| D | 60% | already locked in |
How this is solved
Not sure of your current grade yet? Compute it first with the Weighted Grade Calculator. Rolling your course grades up into a term GPA? See the GPA Calculator.
How the required final score is calculated
Your course grade is a weighted blend of everything before the final and the final itself. Fix your current grade, the final's weight, and your target, and there is exactly one final score that lands you on target — the tool solves for it.
Course grade
current × (1 − w) + final × w
grade = current × (1 − w) + final × w
w is the final's weight as a fraction — a 30% final is w = 0.30.
Solve for the final
(target − current × (1 − w)) ÷ w
final = (target − current × (1 − w)) ÷ w
Above 100% → not reachable. At or below 0% → already secured.
- 1Plug into the formula: (90 − 88 × 0.70) ÷ 0.30 = (90 − 61.6) ÷ 0.30 = 28.4 ÷ 0.30 = 94.67% — a demanding but reachable score.
- 2Don’t know your current grade? Compute it first with the Weighted Grade Calculator, then bring the percentage back here.
When the target can’t be reached — or is already yours
The arithmetic can hand you a number outside 0–100. That isn't a bug — it tells you something useful about where you stand going into the exam.
Required score above 100% = not reachable
Required score at or below 0% = already secured
Frequently asked questions
Your course grade is a weighted blend of everything before the final and the final itself: grade = current × (1 − w) + final × w, where w is the final’s weight written as a fraction (a 30% final is w = 0.30). Set that equal to your target grade and solve for the final: final = (target − current × (1 − w)) ÷ w. For example, with a current grade of 88%, a 30%-weighted final, and a 90% target: (90 − 88 × 0.70) ÷ 0.30 = (90 − 61.6) ÷ 0.30 = 28.4 ÷ 0.30 = 94.67%. So you would need about 94.67% on the final.
A required score above 100% means the target is no longer reachable through the final alone — even a perfect exam can’t pull your grade high enough, because too much of the course is already locked in below your target. The tool shows the highest grade you can still reach (current × (1 − w) + 100 × w) so you can set a realistic target. Your options are usually to aim for a lower final grade, or to ask your instructor about extra credit or a grade adjustment.
If the required score comes out at 0% or below, your grade before the final is already high enough that even a zero on the final keeps you at or above your target. The number is just the arithmetic minimum — in practice any score from 0% upward secures the grade. It’s a good sign you have some cushion, though you’ll usually still want to sit the exam and do your best.
The heavier the final, the more one exam can move your grade — in both directions. A 40% final can rescue a mediocre semester but can also sink a strong one; a 10% final barely nudges the grade, so a rough exam matters less but a great one can’t save you either. Enter the exact weight from your syllabus (for a cumulative final that is often 20–40%). If your final is worth 0%, no score on it changes your grade at all.
Your “current grade” is the weighted average of everything graded so far, before the final. If you don't already know it, compute it first with the Weighted Grade Calculator by entering each category (homework, quizzes, midterm) with its weight and your score — then bring that percentage back here as your current grade.
Yes — it is completely free with no sign-up, and every calculation runs entirely in your browser. Nothing you enter is sent to a server or stored.
Method, assumptions & references
Methodology: course grade = current × (1 − w) + final × w, where w is the final's weight as a fraction; the required final solves to final = (target − current × (1 − w)) ÷ w. A result above 100% means the target is unreachable; at or below 0% it is already secured. All calculations run client-side; nothing is stored. Grading schemes and letter cutoffs vary by instructor — confirm against your own syllabus.
Cross-links
How we calculate this
Reviewed by Reckonist Editorial · Last reviewed 4 July 2026. Figures follow the methods and sources set out in our editorial standards.
The required-final formula is standard arithmetic, but the final’s weight, letter-grade cutoffs, and any curve or extra-credit policy vary by instructor and institution. Always confirm against your own official syllabus. This is guidance only, not an official grade.
Keep going
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