Final Grade Predictor
Enter your current grade and final exam weight to find out what score you need.
By Stuart Mathieson · Updated October 2026
Results
Required Final Exam Score
Current Grade
Final Weight
Note: Results are estimates. Verify with your institution's grading policy.
How the final grade calculator works
Your final course grade is a weighted average of the grade you have now and your final exam score:
Rearranging that for the exam score gives the score you need:
- current
- - your grade so far, as a percentage
- target
- - the overall grade you want
- w
- - the final exam's weight as a decimal (30% = 0.3)
Worked example
Your current grade is 82%, the final is worth 30%, and you want 85% overall:
You need 92.0% on the final.
Score needed for an 80% overall
| Current grade | Final worth 20% | Final worth 30% | Final worth 40% |
|---|---|---|---|
| 70% | 120.0% | 103.3% | 95.0% |
| 75% | 100.0% | 91.7% | 87.5% |
| 80% | 80.0% | 80.0% | 80.0% |
| 85% | 60.0% | 68.3% | 72.5% |
| 90% | 40.0% | 56.7% | 65.0% |
The more the final is worth, the more it can move your grade in either direction. A result above 100% means the target can't be reached through the final alone.
Things to keep in mind
- Your current grade should cover everything except the final. If assignments or quizzes are still to come, your current grade - and the score you need - will change.
- Weighted categories. If your course weights categories (homework, tests, labs and so on), use the overall weighted grade your school portal shows as your current grade.
- Rounding and curves. Teachers may round final grades or grade on a curve, which this calculator can't predict.
- Aiming for a letter grade. Enter the lowest percentage for that letter as your target - the Percentage / Grade Converter lists the ranges.
Frequently asked questions
What if the required score is over 100%?
That means your desired grade isn't reachable through the final exam alone, given your current standing - you'd need extra credit or a grade change elsewhere.
What if the required score is 0% or negative?
It means you've already secured your desired grade based on your current standing, regardless of your final exam score.
Does this account for extra credit?
No - it assumes a standard 0–100% scale for both your current grade and the final. Extra credit would need to be factored in separately.
How much does the final exam affect my grade?
Each point you score on the final moves your course grade by the final's weight. With a final worth 30%, every 10 points on the exam changes your overall grade by 3 points.