? Final Exam Calculator

What do you need on the final? Free, no signup.

Your class

Your current grade should already account for the final's weight - i.e. your average on everything graded so far.

What you need on the final

What-if predictor

Predicted course grade
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Grade cutoffs used: A = 90+, B = 80+, C = 70+, D = 60+. Check your syllabus - your professor's scale may differ. This is an estimate, not your official grade.

How to use it

Finals week math is stressful, so this calculator makes it simple. Enter your current grade, which should be your average on everything graded so far, already accounting for the final's weight rather than your raw total, and the final exam's weight as a percent of the course grade. The tool shows a table: for each letter grade from A to D, the exact score you need on the final to finish there. If the needed score is over 100%, it says Not possible. If it is below zero, it says Already locked in, because you hold that grade no matter what happens on the final. The what-if predictor runs the other direction: type the score you expect on the final and it shows your predicted course grade and letter instantly. Grade cutoffs are A = 90, B = 80, C = 70, D = 60, but your professor's scale may differ, so check your syllabus before trusting the letters. No signup, instant answers, and it works on your phone while you should be studying.

Worked example

Example only, not typical grades. Current grade 82, final worth 30%. To finish with an A you need (90 - 82 x 0.7) / 0.3 = 108.7%, so the table says Not possible. To finish with a B you need (80 - 82 x 0.7) / 0.3 = 75.3%. In the what-if predictor, scoring 85 on the final gives 82 x 0.7 + 85 x 0.3 = 82.9%, which is a B.

FAQs

What should I enter as my current grade?

Your average on everything graded so far, with the final's weight already removed. If the final is worth 30% and your coursework average is 82, enter 82, not a number that mixes the final in.

Why does it say Not possible?

The score you would need on the final is over 100%. The math is honest: no grade on the final can get you there. Aim at the next grade down.

Why does it say Already locked in?

The score needed is below zero, which means your grade is safe even with the worst possible final. Good news: take the pressure off that class and study for another one.

Do grade cutoffs vary by professor?

Yes. The tool uses 90, 80, 70, 60, but many syllabi curve, drop grades, or use different scales. Check yours before treating the letters as final.

Is this my official grade?

No. This is an estimate based on what you entered, not your official grade. Rounding, extra credit, and syllabus quirks can all shift the real number.

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