How Final Exam Math Works
Your course grade is a weighted average: (current grade x its weight) + (exam score x exam weight). Because the final often carries 20–40% of the grade, a strong (or weak) exam performance moves the needle far more than a single homework ever could.
Two Ways to Use This Tool
- Required score mode: enter your current grade, target grade, and exam weight to find the exact exam score you need — including a verdict on whether it is achievable.
- Project my grade mode: enter the score you expect on the exam to see your projected final course grade before you walk in.
The Formula
Required exam score = (target grade − current grade x (1 − exam weight)) ÷ exam weight. Example: at 85% with a 90% target and a 30%-weight final, you need (90 − 85 x 0.70) ÷ 0.30 = 101.7% — mathematically impossible, which means the target needs adjusting or extra credit.
Study Smarter
If the required score is above 100%, talk to your instructor about extra credit early — not after the exam. Track assignment grades with our grade calculator and plan your semester GPA with the GPA calculator.