Final grade calculator

This solver answers: “What do I need on the final exam to end the term at my target grade?” Provide your current percentage, the grade you want, and the portion of the course the final exam is worth.

• Current grade should reflect everything already in the gradebook before the final.
• Final weight must match the decimal or percent stated on the syllabus (for example, 30% → 0.30).

1. Gather your standing percent after the last graded assignment prior to finals.
2. Enter the target course percentage you are aiming for (often the minimum for an A or B letter band).
3. Input the final exam weight exactly as written—double-check whether the syllabus lists it as a percent of the total course.
4. Read the required final score. If it exceeds 100%, the target may be unreachable without extra credit or policy changes.
5. Algebra recap: let C be your current grade percent, D the desired final percent, and w the final weight as a decimal. Required final F satisfies D = C·(1−w) + F·w, so F = (D − C·(1−w)) ÷ w.

• If your instructor drops a low exam, recalculate C after that policy is applied.
• When the final includes a written and lab portion, combine their weights before typing them in.
• Cross-check projections with the Grade calculator if you still have assignments left before the exam.