Enter your current grade, your target course grade, and the final's weight. The calculator returns the exam score you need.
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Enter your current grade, your target course grade, and the final's weight. The formula: needed = (goal - (1 - weight) x current) / weight. The calculator runs it so you do not have to.
Worked example. You have an 88 in the class, want to finish at 90, and the final is worth 30 percent. The 70 percent already locked in contributes 0.70 x 88 = 61.6 points. To reach 90 overall, the final must supply 90 - 61.6 = 28.4 points through its 30 percent share: 28.4 / 0.30 = 94.7. You need about 94.7 on the final to land at 90 overall.
Related tools: the final exam calculator frames the same math around a passing threshold, the grade calculator tracks your weighted average, and the GPA calculator converts finished courses into a GPA.
It back-solves the weighted-average formula to tell you what final-exam score you need to hit a target course grade.
The percentage of your total course grade the final exam is worth. Your syllabus lists it.
You have already secured your target. Even a score of 0 on the final keeps you at or above your goal.
It is exact given the inputs you enter. Your instructor's grading is authoritative if there is any discrepancy.