Final Grade Calculator
Find out exactly what you need on your final exam to finish with the grade you want — in seconds, with no signup and nothing uploaded.
What if I score X on the final?
Enter your current grade, final exam weight, and a final exam score to see your resulting course grade.
100% client-side – your grades never leave the browser.
How it works
Your course grade is a weighted average of your current grade and your final exam score. Your current grade counts for everything except the final exam weight, and the final counts for the rest. This calculator works backwards from the final grade you want to find the final exam score that gets you there.
The formula
needed = (desired − (1 − weight) × current) ÷ weight
Use weight as a decimal. For example, with a current grade of 80%, a final exam weight of 30% (0.30), and a desired grade of 85%: (85 − (0.70 × 80)) ÷ 0.30 = 96.7%. You would need 96.7% on your final.
Letter grades
| Letter grade | Course grade |
|---|---|
| A | 90% or higher |
| B | 80% or higher |
| C | 70% or higher |
| D | 60% or higher |
| F | Below 60% |
Note: schools differ. Some schools use different cutoffs, plus and minus grades, or other scales, so always check your own school or course grading scale.
How to use this calculator
Enter the three numbers at the top of the page. The result updates as you type, so there is no button to press.
First, enter your current grade, as a percentage, for all work before the final. Next, enter the final exam weight, as a percentage, for example 30 if the final is worth 30%. Then enter the desired overall grade, as a percentage.
Read the answer as the score you need on the final exam. A result between 0% and 100% is your target score.
If the result says Not reachable, the score you would need is over 100%, so even a perfect final exam would not be enough. If it says Already secured, you have already reached your desired grade, even with 0% on the final.
For the reverse view, enter a final exam score to see the course grade it would give you.
Worked examples
Example 1: with a current grade of 80% and a final exam weight of 30%, a desired grade of 85% needs 96.7% on the final. The target is higher than the desired grade because the final must lift the current grade.
Example 2: with a current grade of 92% and a final exam weight of 20%, a desired grade of 90% needs 82% on the final. The current grade is already above the target, so a lower final score is enough.
Reverse example: with a current grade of 80% and a final exam weight of 30%, scoring 90% on the final gives 83.0% overall, which is a B on the table above.
FAQ
What does “Not reachable” mean?
It means the score you would need is above 100%. Even a perfect 100% on the final would not reach your desired grade. The calculator also shows what 100% on the final would actually give you.
What does “Already secured” mean?
It means you have already done enough before the final to reach your desired grade, even with 0% on the final. This message only appears when that is actually true.
Do I need an account?
No. This tool is free, with no signup.
Is my data stored?
No. This tool runs 100% client-side in your browser. Nothing you type is uploaded or stored.
What if my school uses different grade boundaries?
Use the percentage result, not only the letter. The calculator gives the score you need as a percentage, so check that percentage against your own school or course scale, which may use different cutoffs or plus and minus grades.
Can I use it for multiple exams?
Yes. Run the calculator separately for each exam, using the grade and weight for that exam. As new marks come in, update your current grade and run it again for the next exam.