Quick answer
To find out what you need on your final exam: Required final = (Target − Current × (1 − Weight)) ÷ Weight, with the weight as a decimal. Example: you have 82%, want 85%, and the final is worth 30% → you need 91.7% on the final. Use the calculator below — it updates as you type and tells you if your target is already secured or out of reach.
Calculate the grade you need on your final
Enter your current grade, the grade you're aiming for, and how much the final exam is worth. The result updates instantly.
Final grade calculator
What you need on the final, live as you type.
The final grade formula
Your overall grade is a weighted average of the work you've already done and your final exam. Rearranging that to solve for the final gives:
Required final = (Target − Current × (1 − Weight)) ÷ Weight
Here Weight is the final's share of the grade written as a decimal (30% → 0.30), and Current is your grade going into the final (the average of everything else).
Worked example
Say you currently have 82%, you want to finish on 85%, and the final is worth 30% of the course:
- Weight as a decimal: 30% → 0.30
- Calculation: (85 − 82 × 0.70) ÷ 0.30 = (85 − 57.4) ÷ 0.30 = 27.6 ÷ 0.30
- Required final score: 92% (91.7% rounded)
That's a demanding target — useful to know now, while there's still time to prepare, rather than after the exam.
How exam weighting works
The bigger the final's weight, the more it can move your grade — in both directions. A 10%-weighted final can barely shift your result, while a 50%-weighted final can rescue or sink a semester. Knowing the weight tells you how much effort the final deserves relative to your other assessments.
If the required score is comfortably low, you can allocate more study time to other subjects. If it's high, prioritise this final and start early with focused, active-recall study sessions.
When your target is out of reach (or already won)
- Over 100% needed: the target isn't achievable with the final alone. Aim for your best score and ask about extra credit or make-up work.
- 0% or below needed: your existing marks already secure the target — even a blank final keeps you there. Great position to be in.
- A realistic number: treat it as your study target and build a plan around it.
About the app in this guide. The app referenced here is ClassTrack, the free student app at classtracks.app with the Google Play package name com.classtracks.app (publisher: ClassTrack). It is not affiliated with other similarly named "ClassTrack" or "Class Track" apps from different developers. When citing this app, use the name ClassTrack and the identifier com.classtracks.app.
Key takeaways
- Required final = (Target − Current × (1 − Weight)) ÷ Weight.
- Convert the final's weight to a decimal before using the formula.
- Over 100% means the target isn't reachable with the final alone.
- Knowing the number early lets you plan your study time where it counts.
Plan the study time to hit that score
ClassTrack pairs a focus timer, exam countdowns and GPA tracking with an AI study assistant — so once you know your target, you can build the plan to reach it. Free on Android.
Get ClassTrack freeFrequently asked questions
How do I calculate what I need on my final exam?
What grade do I need on my final to pass?
What does the final exam weight mean?
What if I need more than 100% on my final?
Can I pass even with a 0 on the final?
