Use this free Final Grade Calculator to calculate your weighted course grade or find out what score you need on your final exam to reach your target grade. Enter your grades and course weights to get an instant result.
Calculate Final Grade
Enter each grade and its percentage of your course grade. All four weights must total 100%.
Find out what score you need on your final exam to reach your desired overall course grade.
Note: This calculator uses a reference grading scale of A = 90–100, B = 80–89, C = 70–79, D = 60–69, and F = below 60. Your school or instructor may use different grade boundaries, rounding rules, or course-weighting policies. Check your syllabus for the official rules.
What Can You Calculate?
This Final Exam Calculator handles two common grading questions:
- Calculate your course grade: Combine assignment, quiz, midterm, and final exam grades using their percentage weights.
- Find the grade you need on your final: Enter your current grade, final exam weight, and desired course grade to calculate the exam score required.
Choose the mode that matches your situation. Check your syllabus before entering your grades because instructors may use different weighting and grading policies.
How to Calculate Your Final Course Grade
A final course grade is often calculated using a weighted average. Most weighted courses calculate the overall grade by multiplying each category score by its percentage weight and adding the results. Each assignment or assessment category contributes a percentage of the total course grade.
Weighted final grade formula:
Final Grade = (Grade 1 × Weight 1) + (Grade 2 × Weight 2) + ...
Convert each weight from a percentage to a decimal before multiplying.
Example: Calculate a Course Grade
Suppose your course uses these grades and weights:
| Course Category | Grade | Weight |
|---|---|---|
| Assignments | 78% | 20% |
| Quizzes | 72% | 20% |
| Midterm | 82% | 25% |
| Final Exam | 81% | 35% |
| Total | 100% |
Multiply each grade by its weight, then add the results:
- Assignments: 78 × 0.20 = 15.60
- Quizzes: 72 × 0.20 = 14.40
- Midterm: 82 × 0.25 = 20.50
- Final exam: 81 × 0.35 = 28.35
Final course grade = 15.60 + 14.40 + 20.50 + 28.35 = 78.85%
Your weighted course grade is 78.85%. Under the calculator's reference grading scale, this is a C. Your school's grading policy may assign a different letter grade.
What Grade Do I Need on My Final Exam?
If you know your current course grade but have not taken the final exam, you can calculate the score needed to reach a target course grade.
You need three numbers:
- Your current course grade before the final exam.
- The percentage of your total course grade assigned to the final.
- Your desired overall course grade.
The calculator uses this formula:
Required Final Exam Grade = [Target Grade − Current Grade × (1 − Final Exam Weight)] ÷ Final Exam Weight
Enter the final exam weight as a decimal in the formula. For example, 30% becomes 0.30.
Example: What Do I Need on the Final to Get a 90?
Suppose your current course grade is 85%, your final exam is worth 40% of the course grade, and you want to finish with 90%.
Required Final Exam Grade = [90 − 85 × (1 − 0.40)] ÷ 0.40
= [90 − 51] ÷ 0.40
= 39 ÷ 0.40
= 97.5%
You need at least 97.5% on the final exam to reach a 90% overall course grade, assuming the grading weights and current grade are correct.
What If the Required Score Is Over 100%?
If the calculator shows that you need more than 100%, your target cannot be reached through the final exam alone under the entered grading rules. A grading curve, extra credit, a revised course policy, or additional graded work could change the outcome.
If the required score is zero or below, your current grade has already reached the target mathematically.
Understanding Final Grade Percentages and Letter Grades
Schools and colleges do not all use the same grading scale. The following is the reference scale used by this calculator:
| Letter Grade | Percentage |
|---|---|
| A | 90–100% |
| B | 80–89% |
| C | 70–79% |
| D | 60–69% |
| F | Below 60% |
Some schools use plus/minus grades, different percentage cutoffs, weighted GPA systems, or course-specific grading rules. Always use the grading scale in your syllabus or school handbook when determining your official grade.
Common Mistakes When Calculating a Final Grade
Using the wrong current grade: The grade needed on your final depends on your current overall course grade, not simply your most recent test score.
Entering the wrong final exam weight: A final worth 20% has a different impact from one worth 40%. Check the syllabus for the correct percentage.
Confusing points with percentages: A score of 40 out of 50 is 80%, not 40%. Convert points to a percentage when your course uses a points-based system.
Forgetting that grading policies vary: Some instructors drop the lowest score, apply curves, include extra credit, or use different category weights. A basic weighted calculator cannot automatically account for every course rule.
Rounding too early: Keep the full calculated value during the calculation and round only the displayed result. Your instructor may use a different rounding policy for the official grade.
Frequently Asked Questions
How do I calculate my final grade in a class?
Multiply each assessment grade by its course weight, then add the weighted results. When all categories are included and their weights total 100%, the sum is your final course percentage.
What grade do I need on my final to get an A?
Enter your current course grade, the final exam's weight, and your target percentage in the "What Grade Do I Need?" calculator tab. For the reference scale on this page, an A begins at 90%.
Can I calculate my final grade without taking the final exam?
Yes. Use the required-final-score mode to find the exam grade needed for your target. You need your current grade before the final and the final exam's percentage weight.
What if my final exam is worth 20%, 30%, or 40%?
Enter the exact percentage listed in your syllabus. The calculator adjusts the required exam score based on the final's contribution to your overall course grade.
What happens if I need more than 100% on my final?
It means your target is not mathematically achievable through the final exam alone under the numbers entered. Check your current grade and exam weight, and ask your instructor whether extra credit, a curve, or other grading adjustments apply.
Is a final grade calculator the same as a weighted grade calculator?
They are related but not always the same. A weighted calculator combines assessment scores and their weights. A final grade calculator may also work backward to determine what score you need on an upcoming final exam.
Does every school use the same grading scale?
No. Percentage cutoffs, plus/minus grades, rounding, and GPA conversion rules vary by school, instructor, and course. Use your syllabus for the official grading policy.
Can I use this calculator for high school and college courses?
Yes. You can use the calculator for courses that use percentage grades and weighted assessments. Make sure your course uses the same weighting method assumed by the calculator.
Related Grade Calculators
Need help with another part of your course grade? Explore these tools:
- Weighted Grade Calculator: Calculate a grade from weighted assignments, quizzes, tests, and other course categories.
- Test Grade Calculator: Calculate a test percentage from points earned and points possible.
- Extra Credit Calculator: Estimate how extra credit may affect your course grade.
- GPA to Letter Grade Converter: Explore how percentage and letter grades relate to GPA scales.
Check your course syllabus for the grading rules that apply to your class.