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Final Grade Calculator

Find the score you need on your final exam.

Enter your current grade, the grade you want to end up with, and how much your final exam is worth, to find out exactly what score you need on that final.

Score Needed on Final Exam

62.5%

You need at least 62.5% on the final exam to reach your target grade.

How to Use This Tool

  1. Enter your current grade in the class as a percentage.
  2. Enter the final overall grade you want to achieve.
  3. Enter how much the final exam counts toward your overall grade.
  4. The score you need on the final updates automatically.

How It Works

Your final overall grade is a blend of your current grade and your final exam score, weighted by how much the exam counts. The formula is:

needed score = (desired grade − current grade × (1 − weight)) / weight

where weight is the final exam’s weight written as a decimal (20% becomes 0.2).

Example

Your current grade is 85%, you want to finish with a 90%, and the final exam is worth 20% of your grade.

needed score = (90 − 85 × 0.8) / 0.2 = (90 − 68) / 0.2 = 110% — not achievable, since it is above 100%.

Benefits

  • Know exactly what to aim for before finals week.
  • Instantly see if a target grade is realistic.
  • No sign-up — recalculate as many times as you like.

Important Notes

This tool gives an informational estimate based on the numbers you enter. It does not know your school’s specific grading policies, curves, or extra credit rules. Always confirm your required score with your instructor or course syllabus before making study decisions.


Frequently Asked Questions

How do I find my final exam weight?

Your course syllabus usually lists how much the final exam counts toward your overall grade, often as a percentage like 20% or 30%. If you are unsure, ask your instructor — this calculator cannot look that up for you.

What does it mean if the needed score is over 100%?

It means reaching your desired grade is not mathematically possible with a normal exam score, given your current grade and the exam’s weight. You would need to talk to your instructor about extra credit or another way to raise your grade.

What if the needed score is negative or very low?

A needed score at or below 0% means your current grade already guarantees your target grade, even with a 0 on the final. The calculator will tell you this directly rather than showing a negative number.

Does this account for extra credit?

No. This calculator only uses your current grade, desired grade, and the final exam’s weight. Extra credit, curves, or dropped assignments are not factored in and should be applied separately based on your instructor’s policy.

Can I use this for a final project instead of an exam?

Yes. The math is the same for any single, heavily-weighted final assessment — just use that assessment’s weight in place of the exam weight.