Final Grade Calculator
Updated on November 10, 2026
Use this final grade calculator to find out what score you need on your final exam to reach your target grade. Already have your exam score? See how it affects your overall course grade. If your class uses total points, enter the points you’ve earned and the points available.
Free · No sign-up · Your numbers stay in your browser · Shows every math step
Before the final. Not sure? Use the weighted grade calculator.
Of your class grade. Check the syllabus. Often 10–30%.
Already got your final back? See where your class grade lands.
Percent, or points like 88/100.
For classes where every assignment is worth points and your grade is total points earned ÷ total possible.
How we got this
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A few focused 1-on-1 sessions before the final can close real gaps. Try a free with a Brighterly math tutor.
How to Use the Final Grade Calculator
For a weighted final, you’ll need your current course grade, your target grade, and the final’s weight. Check your gradebook for your current grade and your syllabus for the final’s weight.
- Enter your current grade. Use your course percentage before the final. If you only have category averages and weights, use the weighted grade calculator to work it out.
- Choose your target grade. Enter a percentage or select A, B, C, or Pass. On the basic scale, selecting B sets the target to 80%.
- Enter the final’s weight, such as 20%. If your course grade is based on total points, switch to Points-based class and enter your points earned, the points possible so far, the final’s point value, and your target grade.
- Select Calculate. The result shows the minimum score you need and your lowest and highest possible course grades.
- Try a few scores. Use the What if I score… slider to see how different exam scores affect your course grade. The letter-grade table shows the minimum score for each grade.
Already have your exam score? Open After the exam and enter your grade before the final, your exam score, and the final’s weight.
What Do I Need on My Final to Get a B?
If your current grade is 78%, your target is a B (80%), and the final is worth 20% of your course grade, you need 88% on the final.
Your current grade counts for 80% of the course grade, so it contributes 78 × 0.80 = 62.4 percentage points. To reach 80%, you need another 17.6 percentage points. Divide 17.6 by 0.20 to get the required exam score of 88%.
| If you score on the final | Your final course grade | Letter grade |
| 0% | 62.4% | D |
| 70% | 76.4% | C |
| 80% | 78.4% | C |
| 88% | 80.0% | B |
| 95% | 81.4% | B |
| 100% | 82.4% | B |
Even a perfect exam score would bring your course grade to 82.4%. You’d need 138% on the final to earn an A on this scale. If you score 0% on the final, your course grade would be 62.4%, which is a D on this scale.
How to Calculate the Grade You Need on Your Final
Multiply your current grade by the share of the course grade it covers. Then multiply your exam score by the final’s weight and add the two results.
Final grade = G × (1 − w) + F × w
To find the exam score you need, solve for F.
F = (T − G × (1 − w)) ÷ w
| Symbol | Meaning | Example |
| G | Your course grade before the final, as a percentage | 78 |
| T | Your target course grade, as a percentage | 80 |
| w | The final’s weight, as a decimal | 0.20 |
| F | Your exam score, as a percentage | 88 |
In the formula, write the exam weight as a decimal. A 20% weight becomes 0.20. If you’re new to working with decimals, start with the examples in our guide.
When the Exam Is Already Over
Use your actual exam score for F in the first formula. If you had 78% before the final and scored 92% on an exam worth 20%, your course grade is 78 × 0.80 + 92 × 0.20 = 80.8%, a B on the basic scale.
Points-Based Classes
If your course grade is based on total points, add the final’s point value to the points possible so far. Then use this formula to find how many points you need on the final.
Points needed = T ÷ 100 × (points possible so far + points possible on the final) − points earned so far
Suppose you’ve earned 390 out of 500 points, the final is worth 125 points, and you want 80% in the course. You need 0.80 × 625 − 390 = 110 points on the final. That’s 88% of 125.
To practice converting fractions like 110/125 to percentages, try these fractions, decimals, and percents worksheets.
How Letter Grades Are Set
On the calculator’s basic scale, an A starts at 90%, a B at 80%, a C at 70%, and a D at 60%. The calculator also offers a scale with plus and minus grades. If your school uses different cutoffs, enter the target percentage from your syllabus and use your school’s scale to interpret the result.
Rounding
The calculator rounds the required percentage up to one decimal place so the displayed score meets your target. Check your syllabus to see how your school rounds course grades.
Special Cases the Calculator Handles
What Do I Need on My Final to Pass?
On the calculator’s basic scale, Pass sets your target to 60%. If your course requires a different percentage to pass or earn credit, enter that percentage as your target. See our guide to what counts as a failing grade for more on how schools treat grades such as a D.
When You Need More Than 100%
If you need more than 100%, a perfect score on the final would still leave you short of your target. Check the highest possible course grade shown in the result. Ask your teacher whether you can submit missing work, retake an assessment, or earn extra credit before the term ends.
When the Grade Is Already Locked In
If the calculator shows that any exam score will meet your target, you’d reach it even with a 0% on the final under the grading rules you entered. Check your syllabus for any separate requirement to take or pass the exam.
Finals in a Weighted Class
Your syllabus may assign different weights to homework, quizzes, tests, and the final. For example, homework might count for 20%, quizzes for 15%, tests for 45%, and the final for 20%. Enter your overall grade before the final and the final’s weight.
More Than One Thing Left to Grade
If a final project and a final exam are the only grades left, add their weights and enter the total. The result is the weighted average you need across both. If one is worth more, it has a bigger effect on your course grade.
For example, if your current grade is 78% and the remaining work is worth 30%, you need a weighted average of about 84.7% across that work to finish with 80%.
Midterms and Unit Tests
Choose Midterm or Unit test under Which exam. Use this mode if the assessment has its own weight in the overall course grade. Enter your grade before the assessment and the percentage the assessment is worth.
For Parents: What to Do With the Result
Use the result to set a study target with your child or start a conversation with their teacher.
- Within reach or comfortable. Turn the percentage into a concrete goal. On a 40-question test with equally weighted questions, an 88% target means getting at least 36 questions right.
- Stretch goal. Ask the teacher which topics carry the most weight on the final, then review the ones your child finds hardest. Use this guide on how to study for a math test to plan the review.
- Not possible this term. Ask the teacher about missing work, retakes, and extra credit before grades close. Use the calculator’s highest possible grade to help set a new target.
- Already locked in. Review the topics your child will need in their next course and check any separate requirements for taking or passing the final.
If your child is still struggling with the material, a middle school or high school math tutor can help them practice the topics on their final. Book free demo.
Frequently Asked Questions
What Do I Need on My Final?
Your required score depends on your current course grade, your target grade, and the final’s weight. For example, if your current grade is 78%, your goal is 80%, and the final is worth 20%, you need 88% on the exam.
What Grade Do I Need on My Final to Get an A?
Set your target to 90% on the calculator’s basic scale, or enter the cutoff for an A from your syllabus. If the required score is above 100%, check the highest course grade you can reach with the final alone.
What Do I Need to Get on My Final to Pass?
Select Pass to set a target of 60% on the calculator’s basic scale. If your course requires a different passing percentage, enter that number as your target.
How Do I Calculate My Final Grade?
Multiply your grade before the final by the share of the course grade it covers. Then add your exam score multiplied by the final’s weight. For example, 78 × 0.80 + 92 × 0.20 = 80.8%.
How Much Can a Final Exam Change My Grade?
If your final is worth 20% and exam scores range from 0% to 100%, the gap between your lowest and highest possible course grades is 20 percentage points. How much your grade rises or falls depends on your grade before the final and your exam score.
Can I Bring a C Up to a B With My Final?
Yes, if the final carries enough weight. If your grade is 75% and the final is worth 30%, you need 91.7% to finish with 80%. If the final is worth 10%, you’d need 125%, so the final alone can’t bring your grade up to a B.
How Can I Raise My Math Grade Before the Final?
Start with the exam topics that cost you the most points on earlier tests. Practice similar problems and review each mistake. If you’re struggling with skills from earlier units, an online math tutor can help you identify what to review first.
What If I Don’t Know How Much My Final Is Worth?
Check your syllabus or the grading section of your school portal. If the final’s weight isn’t listed, ask your teacher before using the calculator.
Does This Work for Weighted Grades?
Yes. Enter your overall weighted grade before the final and the final’s weight. If you only have individual category grades, calculate your current weighted grade first using the category grades and weights from your syllabus.
Is This Final Grade Calculator Free?
Yes. It’s free, requires no sign-up, and your numbers stay in your browser.
Why Doesn’t My Result Match My School Portal?
Check whether your teacher uses different letter-grade cutoffs, rounds grades differently, drops the lowest score, or counts extra credit. Use your teacher’s gradebook for your official course grade.
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