What Grade Do I Need on the Final?
Enter your current grade, the grade you want, and how much the final counts. This calculator tells you exactly what grade you need on the final exam, including when the target is out of reach.
Course Grade Calculator
Add your categories (weighted) or assignments (points-based) and get your current grade.
Weights should add up to 100%.
Final Exam Grade Needed
What do you need on the final to hit your target grade?
If your final has two parts and you already took part 1, fill both fields and we will tell you what part 2 needs.
What-If Scenario
See how a future score changes your grade before it happens.
GPA Calculator
Semester or cumulative GPA — weighted or unweighted.
Scale: A/A+ = 4.0, A- = 3.7, B+ = 3.3, B = 3.0, B- = 2.7, C+ = 2.3, C = 2.0, C- = 1.7, D+ = 1.3, D = 1.0, D- = 0.7, F = 0.
Quick Quiz Grader
For students checking a score — and teachers grading a stack.
Grade Calculator for Your LMS
Each platform grades a little differently. Pick yours — we'll load the right setup into the Course Grade calculator.
Canvas
Uses assignment groups with weights (e.g. Homework 30%, Quizzes 20%, Exams 50%). Matches the Weighted mode.
Blackboard
Weighted totals per category. Same math as Canvas — categories with percentage weights.
Moodle
Gradebook aggregates by mean of grades, often points-based with categories. Start points-based.
Google Classroom
Simple points-based gradebook. Start points-based and enter your scores.
After loading a setup, open the Course Grade tab — your categories are pre-filled. Just enter your scores.
What grade do I need on the final: the short answer
If you are asking what grade do I need on the final, the answer comes from three numbers you already know: your current grade, the grade you are aiming for, and the final exam's weight in the course. Put those into the Final Needed tab of the calculator above and you get the exact required score in one click.
The rest of this page explains where that formula comes from, walks through worked examples (including one where the answer is "impossible"), and shows how the final exam's weight changes everything. If instead you want your overall course grade from all your scores, use our final grade calculator, which is built for that different question.
The final exam needed formula, explained
The formula looks intimidating, but it is just the weighted-average formula solved for the one unknown: your final exam score. Your course grade is a weighted average of everything graded so far plus the final:
Here is the logic step by step. Your current grade covers everything except the final, and it counts for (1 − final weight) of the course. The final exam counts for the remaining share. So: target = current × (1 − w) + needed × w. Solving for "needed" gives the formula above.
Definitions you need:
- Current grade: your percentage in the course right now, excluding the final exam. Find it in your gradebook or compute it with our final grade calculator.
- Target grade: the final course percentage you want, for example 90% for an A-.
- Final weight: the final exam's share of the course grade from your syllabus, for example 25%.
One caution: "current grade" must exclude the final. If your gradebook already folds in a zero or placeholder for the ungraded final, remove it first or your current grade will be understated.
Worked examples: what grade do I need on the final?
Example 1: a reachable target. Your current grade is 88%, you want a 90%, and the final is worth 30%. Needed = (90 − 88 × 0.70) ÷ 0.30 = (90 − 61.6) ÷ 0.30 = 28.4 ÷ 0.30 = 94.7%. Difficult but possible: you need an A on the final to lift a B+ average to an A-.
Example 2: an impossible target. Your current grade is 84%, you want a 90%, and the final is worth 25%. Needed = (90 − 84 × 0.75) ÷ 0.25 = (90 − 63) ÷ 0.25 = 27 ÷ 0.25 = 108%. That is above 100%, so without extra credit the A- is mathematically out of reach. This is the honest answer a calculator gives you that hoping cannot: redirect your effort toward securing the B+ that is actually attainable.
Example 3: a comfortable target. Your current grade is 91%, you want to hold a 90%, and the final is worth 20%. Needed = (90 − 91 × 0.80) ÷ 0.20 = (90 − 72.8) ÷ 0.20 = 17.2 ÷ 0.20 = 86%. You can score below your average and still keep the A-: useful to know when you are deciding how to split study time across multiple finals.
Notice the pattern across all three: the further your target sits above your current grade, and the smaller the final's weight, the higher the required score climbs. When it climbs past 100%, the math has spoken.
How the final exam's weight changes your required score
Students often ask what grade they need on the final without realizing the weight matters as much as the grades themselves. Hold the current grade at 85% and the target at 90%, and watch what different final weights demand:
| Final exam weight | Score needed | Verdict |
|---|---|---|
| 20% | 110.0% | Impossible |
| 30% | 101.7% | Impossible |
| 40% | 97.5% | Possible, but very hard |
| 50% | 95.0% | Possible with strong preparation |
The math: at 20% weight, (90 − 85 × 0.80) ÷ 0.20 = 110%. At 30%: (90 − 85 × 0.70) ÷ 0.30 = 101.7%. At 40%: (90 − 85 × 0.60) ÷ 0.40 = 97.5%. At 50%: (90 − 85 × 0.50) ÷ 0.50 = 95%. A heavier final is a double-edged sword: it gives a struggling student more room to climb, but it also means a bad day hurts more. Check your syllabus for the exact weight before trusting any number.
What grade do I need on the final? Quick-reference examples
Still wondering what grade do I need on the final in your specific situation? Here is a worked reference for a common case: current grade 85%, final exam worth 30%, with different targets.
| Target final grade | Score needed on the final | Verdict |
|---|---|---|
| 80% (hold a B-) | 68.3% | Comfortable |
| 85% (hold a B) | 85.0% | Match your average |
| 90% (reach an A-) | 101.7% | Impossible |
| 93% (reach an A) | 111.7% | Impossible |
The math, with current × (1 − w) = 85 × 0.70 = 59.5: for 80%, (80 − 59.5) ÷ 0.30 = 68.3%; for 85%, (85 − 59.5) ÷ 0.30 = 85.0%; for 90%, (90 − 59.5) ÷ 0.30 = 101.7%; for 93%, (93 − 59.5) ÷ 0.30 = 111.7%. The pattern is instructive: holding your grade is always achievable, but climbing a full letter grade on a 30%-weighted final demands a near-perfect exam, and two letters is out of reach. Your numbers will differ, so run them in the calculator above rather than guessing.
What to do when the number comes out impossible
Finding out what grade you need on the final is only useful if you act on the answer. When the required score exceeds 100%, you have four constructive options.
Ask about extra credit. Do this early, not after grades post. Even a few points of extra credit can pull an impossible target back into range, because extra credit effectively raises the ceiling above 100%.
Lower the target strategically. If 90% needs an impossible 108% but 87% (B+) needs a very achievable 96%, the B+ is the rational goal. A calculator lets you test targets in seconds: try 89, 88, 87 until the required score lands in a range you can actually hit.
Maximize partial credit. On the final itself, attempt every question and show your work. Partial credit routinely adds 5 to 10 percentage points to an exam score, which is exactly the margin in close cases like the 97.5% example above.
Protect what you have. When the stretch goal dies, the fallback goal matters: make sure you do not lose the grade you have already earned by neglecting the final entirely. A student at 84% who "gives up" and scores 60% on a 25%-weighted final drops to 78%.
Tips for hitting the score you need
Once you know what grade you need on the final, convert the number into a study plan. Allocate preparation time in proportion to each final's weight across your courses: an hour for a 40%-weighted final moves your GPA roughly twice as much as an hour for a 20%-weighted one.
Work backward from the exam's point structure. If you need 94.7% on a 200-point final, that means 189 points: you can afford to lose only 11. That precision tells you whether to chase breadth (covering every topic shallowly) or depth (mastering the heavily tested chapters). Past exams, when available, reveal the point distribution better than any study guide.
Finally, verify your inputs once more before finals week: confirm the final's weight in the syllabus, confirm your current grade excludes the final, and confirm no dropped score or curve changes the picture. Then run the numbers in our what-if grade calculator to preview exactly where different final scores would leave your course grade.
FAQs: what grade do I need on the final?
What grade do I need on the final to get an A?
It depends on your current grade and the final's weight. With a current grade of 88% and a final worth 30%, you need 94.7% for a 90% (A-). Enter your three numbers in the Final Needed tab above for your exact answer. Remember that grading scales vary by school, so confirm what percentage your school requires for an A.
What grade do I need on the final to pass the class?
Use the same formula with your target set to the passing threshold, often 60% (D-) or 70% (C-) depending on the school. Example: current grade 72%, target 70%, final worth 25%: needed = (70 − 72 × 0.75) ÷ 0.25 = (70 − 54) ÷ 0.25 = 64%. Check your syllabus for the actual passing cutoff.
What if the calculator says I need more than 100%?
Then your target is mathematically impossible without extra credit or a curve. Lower your target until the required score falls at or below 100%, ask your teacher about extra credit early, and focus on securing the best grade that is actually attainable.
Does the final exam needed formula work for points-based courses?
Yes, with one conversion: express the final's weight as its share of total course points. If the final is worth 200 of 1,000 total points, its weight is 20% (0.20). Your current grade is your percentage on completed points. Then the formula works exactly as written.
How do I find my current grade before the final?
Check your online gradebook, making sure it does not include a zero placeholder for the ungraded final. Or compute it yourself: enter all completed categories and their weights in our final grade calculator, leaving the final out, and use the result as your current grade.
Can a final exam save a failing grade?
Sometimes, but the math is demanding. A final worth 30% can lift a grade by roughly a letter if you score far above your average, yet climbing from failing to passing usually requires a near-perfect final plus a forgiving weight. Run your exact numbers above: the required score tells you whether "save" is realistic or whether you should talk to your teacher about other options.
What grade do I need on the final if I want to keep my current grade?
Exactly your current grade. If you score precisely your current average on the final, your course grade does not move, regardless of the weight. The weight only matters when your final score differs from your average: above it pulls you up, below it drags you down.