How the final grade calculator works
The formula
A course grade is a weighted average. If the final is worth w% of the course, your current work is already worth (100 − w)% of it:
Course grade = current grade × (1 − w) + final score × w
Rearranging to solve for the final score:
Score needed = (desired grade − current grade × (1 − w)) ÷ w
Reading the answer
A needed score between 0% and 100% is achievable — aim a little above it for safety. Above 100% means the target is out of reach this term; the tool tells you the best finish still possible. Below 0% means the grade is already guaranteed by your coursework.
Worked example
Current grade 80%, final worth 30%, target 85%: (85 − 80 × 0.70) ÷ 0.30 = (85 − 56) ÷ 0.30 = 96.67% needed on the final. Tough but possible — and scoring 70% on the final would still finish the course at 77%.
Frequently asked questions
How is the score I need calculated?
Your current grade counts for (100 - final weight)% of the course and the final counts for the rest. Needed score = (desired grade - current grade x (1 - weight)) / weight. With a current grade of 80%, a final worth 30%, and a target of 85%: (85 - 80 x 0.70) / 0.30 = 96.67%.
What if the calculator says I need more than 100%?
Then the target grade is mathematically out of reach, because even a perfect final cannot lift the average enough. The tool shows the highest course grade still possible so you can pick a realistic new target.
What if I need less than 0%?
Good news: your coursework has already locked in the grade you want. Even scoring zero on the final leaves you at or above your target.
Where do I find the final exam weight?
It is in your course syllabus, usually in the grading or assessment section. If the syllabus lists points instead of percentages, divide the final exam points by the total course points and multiply by 100.
Does this work for a midterm or a single test too?
Yes. Treat the test as the 'final': enter your grade before the test, the test's weight in the course, and the grade you are aiming for.
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