Calculate your current grade, find what you need on the final exam, and run what-if grade scenarios. Supports weighted and unweighted grading. Free, no signup.
How Final Grade Calculators Work
A final grade calculator uses a weighted average formula. Your current grade represents the portion of the course already completed, and the final exam represents the remaining weight. The formula finds the score needed on the final to hit your target:
Required Final Score =
(Target Grade − Current Grade × Current Weight) / Final Weight
Example: Current 78%, worth 70%. Final worth 30%. Want 80%:
= (80 − 78×0.70) / 0.30 = (80 − 54.6) / 0.30 = 84.7%
Understanding weighted grades
Most courses assign different weights to different components. A typical structure might be: Homework 20%, Quizzes 20%, Midterm 25%, Final 35%. Your overall grade is a weighted average — not a simple average of all scores. Earning 100% on homework (20% weight) contributes only 20 percentage points to your final grade.
Frequently Asked Questions
What grade do I need to pass?
Most US high schools and colleges require a 60–70% (D or D+) to pass a course, though standards vary by institution and course level. Many graduate programs require a B (80%) minimum to count a course toward the degree. Enter your target in the Final Grade Needed tab to see exactly what score you need on the final.
Can I still pass if my final exam is worth 40%?
It depends on your current grade. If you currently have 50% and the final is worth 40%, you need to score (60 − 50×0.60) / 0.40 = 75% on the final to pass at 60%. Our calculator handles all these scenarios instantly — just enter your numbers and it shows whether passing is still possible.
My weights don't add up to 100% — what do I do?
Some professors don't finalize all weights until the end of semester, or drop lowest scores. In the Weighted Average tab, we display a warning if your weights don't sum to 100%. In that case, enter the weights as given and interpret the result as a partial-course average.