Accurate reverse math
Uses the weighted-average formula to find the needed score.
Study Calculator
期末成绩计算器 — 期末需要多少分
输入当前成绩、期末考试占比和目标总成绩，计算达到目标所需的期末分数。提示无法达到或已锁定的情况。
期末需要得分
100.0%
即使期末100%也无法达到 — 需要额外加分。
What is the final grade calculator?
If you know your grade so far and how much the final exam is worth, you can work backward to the score you need on the final to hit your target. It solves: final grade = current × (1 − weight) + final score × weight.
How to use
- 1 Enter your current grade (%).
- 2 Enter the final exam's weight (%).
- 3 Enter your target overall grade and read the score you need.
Highlights
Reality check
Tells you if the target needs over 100% or is already secured.
Instant
Results update as you type.
常见问题
What if the needed score is over 100%?+
Even a perfect final won't reach your target. Without extra credit, adjust the goal.
What if it's negative?+
You've already secured the target — even a 0% final keeps your grade at or above it.
How do I enter the weight?+
Enter the percentage the final counts toward your grade (e.g. 30%); the rest (70%) uses your current grade.
Related tools
Grading schemes (weights, rounding, extra credit) vary by school and course. Confirm the actual rules in your syllabus.