CalcStack — free, instant, no signup. The interactive calculator loads automatically.
The most-Googled question of every December and May.
Every semester ends with the same arithmetic panic: what do I need on the final? This calculator answers it exactly — current grade, the final's weight in the syllabus, and your target produce the required score. It also tells you the two honest edge cases: when the grade you want is mathematically impossible, and when you have already locked it in.
The most-Googled student question every December and May: "what do I need on the final?" Students use it to triage finals week — which course needs an all-nighter and which grade is already locked. Knowing a target is impossible is valuable too: it redirects the study time.
Then the target is mathematically out of reach on the final alone — the honest answer this calculator gives you. Options: extra credit, a lower target (run it again), or talking to the professor now rather than after the exam.
Congratulations — your target is locked in even if you score zero. That information is valuable too: it tells you which of your finals deserves your study time and which is already safe.
It works when your current grade is already computed as a single number. If your course uses weighted categories (homework 20%, tests 40%…), compute the current standing first — your LMS usually shows it — then use this for the final.