Find out exactly what you need to score on your final exam
The logic is straightforward. Your final course grade is made up of two parts: everything you've already done (assignments, mid-terms, internals) and the upcoming final exam. If you know your current standing and how much the final is worth, you can work backwards to find exactly what you need on that last paper.
The formula assumes your "current grade" already reflects the weighted average of everything done so far (not just a simple average). If some of your earlier scores aren't weighted yet, use our Grade Calculator first to get your actual current standing.
Knowing the exact score you need changes how you should prepare. If you need 95%+ on the final to reach your target, that requires a very different strategy than needing just 50%. For high targets on high-stakes exams, you genuinely need to start early โ at least 3-4 weeks out for a major university exam.
If you need something like 40-55%, that's more about not making silly mistakes and covering the basics well rather than mastering every topic. Prioritise past papers and common question patterns over trying to study everything equally.
This happens โ and it's not the calculator being broken. It just means that even if you score 100% on the final, you can't mathematically reach your target grade given your current standing and the weightage. At that point, you either need to adjust your target downward or check if there's anything else you can do (resubmissions, extra credit, grace marks from the professor).
Some universities also have moderation policies where exam marks get scaled up if the overall class performance is poor โ this is more common in relative grading systems. If you're in this situation, it's worth talking to your professor about your options.