Final Grade Calculator
Type in your current grade, how much your final exam is worth, and the grade you want to finish with. The calculator tells you the exact score you need — or tells you honestly that the grade is already yours, or that no score can reach it this term.
You need to score
96.0%
on your final exam to finish with 90.0% in the course.
Formula: needed = (target − current × (1 − weight)) ÷ weight. With a 0 the course grade is 66.0%; with a perfect final it is 91.0%.
| If you score… | 0% | 50% | 60% | 70% | 80% | 90% | 100% |
|---|---|---|---|---|---|---|---|
| Your course grade is | 66.0% (D) | 78.5% (C+) | 81.0% (B-) | 83.5% (B) | 86.0% (B) | 88.5% (B+) | 91.0% (A-) |
How the score-you-need formula works
Your course grade is a weighted average. Everything before the final is already decided except the final's slice, so the maths is one line:
needed score = (target − current grade × (1 − final weight)) ÷ final weight
Worked example
The calculator above starts with this example: your current grade is 88%, the final is worth 25%, and you want to finish with 90%. Your work so far locks in 88 × 0.75 = 66 points. You need 90 − 66 = 24 more points from a final worth 25, so 24 ÷ 0.25 = 96% on the final. Tough — but possible, and now you know it before you start revising, not after.
The two answers nobody warns you about
Already locked in: if you are on 95% and the final is worth 10%, even a 0 leaves you at 85.5% — some targets cannot be lost. Out of reach: if you are on 70%, the final is worth 20% and you want 90%, you would need 170% on the final. A perfect paper gets you to 76%. The calculator shows you both cases plainly, because a real target beats a fantasy one when you are deciding how to spend your revision time.
After the final, what happens to your GPA?
Your course grade becomes one line in your GPA. Once you know the grade — or the range it could land in — run it through the GPA calculator with your other courses to see the semester GPA it produces, or the cumulative GPA calculator to see what it does to your overall record.
Prefer a spreadsheet? Take the template
These free templates are made by SemesterGrade and use exactly the formulas printed on our methodology page. They work in Excel, and in Google Sheets too — just open the file in Sheets (File → Import) and it is yours.
The planner works out the score you need on each final; the tracker keeps a running semester-by-semester GPA record. No sign-up, no email — just the file.
Frequently asked questions
What do I need on my final to get an A?+
It depends on two numbers: your current grade and how much the final is worth. If you are on 92%, your final is worth 25% and an A starts at 90%, you need (90 − 92 × 0.75) ÷ 0.25 = 84% on the final. Enter your own numbers above — the calculator does this maths instantly, and tells you honestly if the A is already locked in or out of reach.
How much can a final exam change my grade?+
At most, by its weight. A final worth 25% can move your course grade by up to 25 percentage points — the gap between scoring 0 and scoring 100 on it. If your grade before the final is 88% and the final is worth 25%, your course grade will land somewhere between 66% (scored 0) and 91% (scored 100). The scenario table under the calculator shows the in-between scores.
Can the final lower my grade?+
Yes. If your final score is lower than your current grade, the weighted average drops. With a current grade of 88% and a final worth 25%, scoring 60% on the final gives 88 × 0.75 + 60 × 0.25 = 81%. That is exactly why it is worth knowing your number before you walk in — sometimes you are defending a grade, not chasing one.
My syllabus weights categories, not one current grade. How do I use this?+
Use the 'By grade categories' tab. Enter each category from your syllabus — homework, quizzes, midterm, participation — with its weight and your current score in it, plus the final's weight and your target. The calculator adds up the points you have already banked and works out what the final has to contribute.
What if my teacher drops my lowest score or replaces it with the final?+
Some teachers replace your lowest test score with your final exam score if it is higher. In that case, work out your current grade with the low score removed (your gradebook usually shows this), then use that as your current grade here. If the final also counts as its own category, add it in the categories tab as well — check your syllabus for how your teacher describes it.
Does this work if my final is curved?+
The calculator works on the percentages that actually land in your gradebook. If your teacher curves the final, your curved score is the one that counts — so estimate with the curved number if you know it, or run the calculator with a few different scores (the scenario table helps) to see the range of outcomes.
All grade & GPA calculators
GPA Calculator
Add your courses, credits and grades to get your semester and cumulative GPA on the standard 4.0 scale, weighted or unweighted.
Cumulative GPA Calculator
Combine past semesters with this term's grades to see your new cumulative GPA — and what it takes to move it.
Weighted GPA Calculator
Honors and AP courses counted with their bonus points, shown side by side with your unweighted GPA.
Semester Grade Calculator
Work out your semester grade from homework, quizzes, tests and participation, weighted the way your syllabus weights them.
High School GPA Calculator
A GPA calculator built for high school: weighted AP and Honors points up front, plus the unweighted number colleges also see.