See your final course grade before grades drop
Enter your current grade, how much the final is worth, and the score you expect to get — we'll calculate the grade you'll finish the class with.
Before the final
Final's weight
What you scored
Final course grade
85.6%
88% counts for 70%, the final for 30%
Letter grade
B
What does the final exam grade calculator do?
This tool answers a simple question: if I score X on my final, what grade will I finish the class with? It blends the grade you already have with the score you expect on the final, using the final's weight to balance the two.
Your existing grade only counts for the part of the course the final doesn't cover. If the final is worth 25%, your current grade carries the other 75% — so a strong semester cushions a shaky final, and vice versa.
Try a few different exam scores to see your best, likely, and worst-case outcomes. If you instead want to know the score you need to hit a target grade, use the “What grade do I need on my final?” calculator.
How to calculate your final grade
You need three numbers, all of which are usually in your syllabus or gradebook.
Enter your current grade
Your overall percentage in the class right now, before the final exam is counted.
Enter the final's weight
How much the final exam is worth as a percentage of your total grade (check the syllabus).
Enter your exam score
The score you got — or expect to get — on the final. Your overall grade appears instantly.
Final grade formula
Here w is the final's weight written as a decimal — a 25% final is 0.25. The term (1 − w) is the share of your grade that your current work already covers.
Multiply your current grade by (1 − w), multiply your final score by w, and add the two together to get your overall course grade.
Because the weights add up to 1, the result is always a properly balanced average — not a simple midpoint of the two numbers.
Worked examples
A typical final
With an 88% going into a final worth 25%, scoring 76% gives 88 × 0.75 + 76 × 0.25 = 85% — a B. Your semester work carries three-quarters of the weight.
A heavy final
A 70% current grade with a 50% final and a 90% exam score yields 70 × 0.5 + 90 × 0.5 = 80% — the final pulls the grade up sharply because it's worth half the course.
A light final
A 92% with a 10% final and a 70% exam score barely moves: 92 × 0.9 + 70 × 0.1 = 89.8%. A small-weight final can't rescue or sink you much.
Bombing the final
An 84% with a 30% final and a 50% exam score lands at 84 × 0.7 + 50 × 0.3 = 73.8% — a one-letter drop, showing why high-weight finals deserve the most prep.
Why your gradebook number might differ
This calculator assumes your current grade and the final are the only moving pieces. If your course drops your lowest test, curves the final, or has multiple weighted categories, the real result can shift slightly.
For courses with several weighted categories (homework, quizzes, midterms, final), use the weighted grade calculator instead — it lets you enter each category separately.
FAQ
Final Exam Grade Calculator — FAQ
Answers to the questions students ask most about this tool.
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