Every student asks the same question in the last week of the semester: what do I actually need on this final? Enter your current grade and what the final is worth, and you will get the exact score required for every letter grade still within reach.
What do I need on my final?
Find the exam score you need to reach your target course grade.
Result
Enter your current grade, the final’s weight and your goal to see the score you need.
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How this calculator works
Your course grade is a weighted average of the work you have already done and the final exam. Solve that equation for the final exam score to find what you need.
Required final score = (target − current × (1 − w)) ÷ w where w = final weight ÷ 100
Example: current grade 84%, final worth 30%, target 87%: (87 − 84 × 0.7) ÷ 0.3 = 94%.
If the result is above 100%, the target cannot be reached without extra credit. If it is 0% or less, you have already secured that grade. If other work is still ungraded, open the advanced section: the calculator then uses target × 100 = current × graded weight + other score × other weight + final score × final weight.
Grading scale used by default
United States — letter grades with +/−. The most common US high school and college scale. Many schools use it, but cut-offs vary — always check your syllabus.
| Grade | Percentage |
|---|---|
| A+ | 97% and above |
| A | 93% – 96.99% |
| A− | 90% – 92.99% |
| B+ | 87% – 89.99% |
| B | 83% – 86.99% |
| B− | 80% – 82.99% |
| C+ | 77% – 79.99% |
| C | 73% – 76.99% |
| C− | 70% – 72.99% |
| D+ | 67% – 69.99% |
| D | 63% – 66.99% |
| D− | 60% – 62.99% |
| F | 0% – 59.99% |
Grading scales differ between countries, schools and even individual courses. Use the grading scale button in the calculator to switch to a US, UK, Canadian or Australian scale, or to enter your own cut-offs.
How to use this calculator
Three fields, and you can find all three on your syllabus and in your grade portal.
- Current grade — your grade in the course right now, as a percentage. Your learning management system usually shows it; if it does not, add up your weighted categories first.
-
Final exam weight
— how much of the course grade the final is worth. If your syllabus says the final is 30% of the course, enter
30. - Grade you want in the course — your target. Or skip it entirely and use the Quick targets buttons for the common letter grades.
The result shows the score you need on the final, plus a table covering every letter grade so you can see the whole picture at once — including which grades are already out of reach and which are already locked in.
If other assignments are still ungraded besides the final, open "Other work still to be graded? (advanced)" — that section is explained further down.
What do I need on my final?
That question has an exact answer, and it comes from one formula:
Score needed = (target − current × (1 − weight)) ÷ weight
where weight is the final's share of the course, written as a decimal. A final worth 30% makes weight = 0.30.
The logic is simpler than it looks. Your current grade already accounts for the portion of the course that is not the final. That portion is frozen. Whatever is left of the 100% has to come from the final, and the formula solves for the score that gets you there.
A worked example
You are sitting at 84%. The final is worth 30% of the course. You want an A−, which starts at 90%.
Step 1 — how much is already banked
The final is 30% of the course, so the other 70% is already graded:
84 × 0.70 = 58.8 points
Those 58.8 points are fixed. Nothing on the final changes them.
Step 2 — how much has to come from the final
90 − 58.8 = 31.2 points needed from a category worth 30
31.2 ÷ 0.30 = 104%
You would need 104% on the final. Unless your instructor offers extra credit, an A− is no longer mathematically available.
This is exactly the kind of answer worth getting in week twelve instead of after the exam. Here is the same student's full picture:
| Target grade | Score needed on the final | Status |
|---|---|---|
| A+ (97%) | 127.33% | Out of reach |
| A (93%) | 114.00% | Out of reach |
| A− (90%) | 104.00% | Out of reach |
| B+ (87%) | 94.00% | Possible — but demanding |
| B (83%) | 80.67% | Comfortable |
| B− (80%) | 70.67% | Comfortable |
| C+ (77%) | 60.67% | Comfortable |
| C (73%) | 47.33% | Very likely |
| C− (70%) | 37.33% | Very likely |
| D+ (67%) | 27.33% | Nearly certain |
| D (63%) | 14.00% | Nearly certain |
| D− (60%) | 4.00% | Effectively locked in |
Read that table and your study plan writes itself. The B+ is the real fight. The B is well within reach on an ordinary day. Failing the course would require scoring under 4%.
When the answer comes back over 100%
Most calculators will happily tell you that you need 127% and leave you to work out what that means. It means the grade is gone.
That is not a reason to stop reading — it is a reason to look one row down. In the example above, the A− is gone but the B+ is live at 94%. Knowing which grade is the real target changes how you spend the week.
Three outcomes are worth naming plainly:
- Above 100% — not attainable. Move to the next grade down and plan for that one.
- Between 0% and 100% — attainable. That is your number.
- Below 0% — already secured. Even a zero on the final leaves you at or above that grade.
That last case is more common than students expect. If you are at 95% with a final worth 20%, a 20% on the final still lands you a B−. Worth knowing before you cancel your weekend.
How much can a final actually move your grade?
Finals feel enormous, and their real effect is narrower than the anxiety suggests. A final can only move your grade within a fixed range, and the range is set entirely by its weight.
Starting from 84%:
| Final is worth | Best possible outcome | Worst possible outcome | Total swing |
|---|---|---|---|
| 20% | 87.2% | 67.2% | 20 points |
| 30% | 88.8% | 58.8% | 30 points |
| 50% | 92.0% | 42.0% | 50 points |
With a final worth 30%, that 84% cannot become higher than 88.8% no matter what happens — a perfect score still leaves you short of an A−. It also cannot fall below 58.8% even if you score zero.
Both halves of that are useful. The ceiling tells you when to stop chasing a grade that left the building weeks ago. The floor tells you when one bad exam is genuinely survivable.
When other assignments are still ungraded
By default the calculator assumes the final is the only thing left, so your current grade covers everything else. Often that is not true — a last project or a final lab is still outstanding.
Open "Other work still to be graded? (advanced)" and fill in:
- Weight already graded — how much of the course already has grades. If you have been graded on 50% of the course, enter
50. - Expected score on other work — what you realistically expect on the remaining non-final assignments. Leave it on Same as current to assume you keep performing as you have been.
Worked example. You are at 88% on the 50% of the course that has been graded. Another 15% of the course is still ungraded and you expect about 80% on it. The final is worth the remaining 35%. You want an 85% overall.
``` Banked: 88 × 0.50 = 44.0 Expected: 80 × 0.15 = 12.0 ───── 56.0 points
(85 − 56.0) ÷ 0.35 = 82.86% ```
You need 82.86% on the final. Without the advanced fields, a basic calculator would have given you a meaningfully different — and wrong — number.
Final grade calculator vs final exam calculator
Two questions that sound alike and run in opposite directions:
- "What do I need on the final?" — you know the grade you want and you are solving for the exam score. That is this page.
- "If I score 78 on the final, what will my course grade be?" — you know the exam score and you are solving for the course grade. That is the final exam calculator.
Students usually want the first before the exam and the second immediately after it.
Reading the result on a letter scale
A standard US scale:
| Percentage | Letter | GPA points |
|---|---|---|
| 97–100% | A+ | 4.0 |
| 93–96% | A | 4.0 |
| 90–92% | A− | 3.7 |
| 87–89% | B+ | 3.3 |
| 83–86% | B | 3.0 |
| 80–82% | B− | 2.7 |
| 77–79% | C+ | 2.3 |
| 73–76% | C | 2.0 |
| 70–72% | C− | 1.7 |
| 67–69% | D+ | 1.3 |
| 63–66% | D | 1.0 |
| 60–62% | D− | 0.7 |
| Below 60% | F | 0.0 |
Watch the boundaries. A course grade of 89.5% is a B+ here — an A− starts at 90%. Some schools round to the nearest whole number, which turns it into a 90% and an A−. Some do not round at all. Your syllabus decides, and on a boundary that single policy is worth a full letter grade. If your institution uses a UK, Canadian, or Australian scale, switch scales inside the calculator.
Mistakes that produce wrong answers
- Using your assignment average as your current grade. If your course is weighted, your average and your grade are different numbers. Calculate the weighted grade first.
- Entering the exam's point value instead of its weight. A 200-point final in a 1,000-point course is 20%, not 200.
- Ignoring other ungraded work. Use the advanced section — it exists for exactly this.
- Forgetting that a cumulative final may be weighted differently. Some syllabi give a cumulative final a larger share, or let it replace a midterm. Read the wording carefully.
- Trusting a portal grade that excludes ungraded items. Many systems show your grade on graded work only, which flatters it.
- Assuming your school rounds. Check. Do not hope.
Questions
What do I need on my final to pass?
Enter your current grade and the final's weight, then set your target to the minimum passing grade — usually 60% or 70%. The calculator returns the exact score. In most courses the number is far lower than students expect.
Can I still get an A?
The table shows every letter grade at once. If the A row asks for more than 100%, it is gone — and the next reachable row is right there.
What if my final is worth 50%?
Then it moves your grade by up to 50 points in either direction. Enter 50 in the weight field. High-weight finals are exactly the case where knowing the number early matters most.
Is this the same as a final exam calculator?
Related but reversed. This page solves for the score you need. A final exam calculator solves for the grade a given score produces.
Is my data saved anywhere?
No. Everything runs in your browser. Nothing is sent to a server and no account is required.