Final grade calculator
Find the score you need on your final exam to finish with the course grade you want. Enter your current grade, your goal and how much the final counts.
Use your course grade before the final is included.
How to find the score you need on a final
Worked examples
| Current | Goal | Final weight | Calculation | Score needed |
|---|---|---|---|---|
| 87% | 90% | 25% | (90 − 87×0.75) ÷ 0.25 | 99% |
| 76% | 80% (B) | 20% | (80 − 76×0.8) ÷ 0.2 | 96% |
| 50% | 90% | 20% | (90 − 50×0.8) ÷ 0.2 | 250%, not possible |
A required score above 100% means the final alone cannot reach the target without extra credit. The calculator also shows the highest course grade you can reach with 100% on the final.
How to use the final grade calculator
- Enter your current grade. Use the course grade before the final exam is included.
- Set the target and the weight. Enter the overall grade you want and the final’s percentage in the syllabus.
- Read the result. See the required score, the outcome if you score 0% or 100%, and what each letter grade would take.
Use the correct current grade
What it does not predict: curves, extra credit, dropped assignments, category minimums and rounding policies can change the official grade. Treat the result as a planning target and check your syllabus.
FAQ
What do I need on my final to get a B?
Use 80% as the target. With a current grade of 76% and a final worth 20%: (80 − 76 × 0.8) ÷ 0.2 = 96%. You would need a 96 on the final.
What grade do I need on my final?
It depends on your current grade, the grade you want and how much the final counts. Enter those three numbers and the calculator solves for the exact score you need.
What if I need more than 100% on the final?
Then the target cannot be reached through the final alone without extra credit. The calculator shows the highest overall grade you can reach with 100%.
Does the current grade include the final?
No. Use the course grade for work completed before the final. If your gradebook already counts the final as a zero, find the grade without that zero.
Can the calculator account for a curve?
Not automatically. Enter the scores shown in your syllabus or gradebook, then adjust the target if your instructor publishes a specific curve or extra-credit policy.
Which letter-grade scale does it use?
A plus and minus scale: A- starts at 90, B- at 80, C- at 70, D- at 60. Your school may use different cutoffs.
Is my data stored?
No. The math runs in your browser and nothing you enter is sent or saved.
Does it use AI?
No. It is exact arithmetic, so the same numbers always give the same result.