Final Grade Calculator

What grade do I need on my final?

Enter your current grade, the grade you want, and how much the final is worth. We'll tell you the exact score you need on the final — and whether it's possible.

Grade needed on your final

97.5%

The minimum score to hit your goal

Score 97.5% or higher on your final to finish the course with at least 90%.

How this final grade calculator works

This is the classic “what do I need on my final” calculator. You tell it where you stand and where you want to end up, and it works backward to the exact exam score that gets you there.

The key idea is that your current grade only fills the part of the course the final doesn't. If the final is worth 40%, your existing work scales up to cover the remaining 60% of your grade — and the final has to make up the rest.

We also flag the two outcomes students most want to know: when a target is out of reach (you'd need more than 100%) and when it's already locked in (you'd pass even with a zero).

How to find the grade you need

Three quick inputs from your syllabus and gradebook are all it takes.

1

Enter your current grade

Your overall percentage in the class right now, before the final.

2

Enter the grade you want

The overall course grade you're aiming for — an 80% for a B, 90% for an A, and so on.

3

Enter the final's weight

What percentage of your grade the final is worth. The required score appears instantly.

The formula behind it

Required final = (Goal − Current × (1 − w)) ÷ w

w is the final's weight as a decimal (a 40% final is 0.40). Current × (1 − w) is how much your existing grade contributes once it scales to fill the non-final portion of the course.

Subtract that contribution from your goal to find what's left for the final to cover, then divide by w to convert it into a required exam score.

If the result is above 100%, the goal isn't reachable through the final alone. If it's zero or negative, you've already secured the grade.

Examples

Reaching for an A

Sitting at 85% with the final worth 40%, an A (90%) needs (90 − 85 × 0.6) ÷ 0.4 = 97.5% on the final — tough but possible.

Just need to pass

At 68% with a 25% final, a 70% target needs (70 − 68 × 0.75) ÷ 0.25 = 76% on the final.

Out of reach

At 74% with a 20% final, aiming for 90% needs (90 − 74 × 0.8) ÷ 0.2 = 154% — impossible without extra credit, and the calculator says so.

Already locked in

At 96% with a 15% final, keeping an A (90%) only needs 56% on the final — you could have an off day and still finish with an A.

What the results mean

  • A number between 0 and 100 is your target score — aim for that or higher.
  • Above 100% means the grade can't be reached through the final alone; look into extra credit or talk to your professor.
  • Zero or below means the grade is already guaranteed, even if you score nothing on the final.
  • Convert the required percentage to a letter using the standard scale (90 = A, 80 = B, 70 = C).

FAQ

Final Grade Needed Calculator — FAQ

Answers to the questions students ask most about this tool.

Hit the number you need on your final

Cramberry builds flashcards, quizzes, and practice tests from your course material so you can earn the exact score this calculator shows.

Start studying free