Test Score Calculator — Final Exam Grade Needed
Calculate what grade you need on your final exam to achieve your target overall grade. Handles weighted grading systems with impossible target detection.
Test Score
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The Formula
This calculator uses the weighted grade formula to determine what score you need on your final exam to reach your target grade. The formula takes your current grade, weights it by everything except the final exam, then calculates what you need on the final to reach your desired overall grade.
Variable Definitions
Current Grade
Your current overall grade before the final exam, as a percentage (0-100).
Desired Grade
The grade you want to achieve after the final exam is included.
Exam Weight
The percentage of your total grade that the final exam represents (0-100).
How to Use This Calculator
- 1
Enter your current grade in the class as a percentage.
- 2
Enter the grade you want to achieve after the final.
- 3
Enter how much the final exam counts toward your overall grade.
- 4
The calculator will tell you the minimum score needed on the final.
Understanding the Concept
Final exam grades are calculated using a weighted average formula. If your current grade is 85% and the final is worth 20% of your total grade, your current grade accounts for 80% of the total. To calculate what you need on the final, subtract the weighted current grade from your desired grade, then divide by the exam weight. If the result is over 100%, your target is mathematically impossible. If it is negative, you have already achieved your goal regardless of exam performance. Teachers often curve exams or offer extra credit, so even an impossible result is not the end of the world — talk to your instructor about options.
Frequently Asked Questions
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