Final Grade Calculator

Enter your current class grade, target average, and exam weight details.

Current Grade (%)

Target Class Grade (%)

Final Exam Weight (%)

Required Final Exam Score

Impossible

Warning: You need a score of 110.0% which is higher than 100%. You cannot achieve your target grade in this course unless extra credit is offered.

Quick Answer & AI Summary

I have an 85% in my class. What score do I need on the final exam (weighted 20%) to get a 90%?

To get a 90% overall grade in the class when your current score is 85% and the final represents 20% of your grade, you would need to score a 110% on the final exam. Since this exceeds 100%, it is impossible without extra credit.

Calculation Formula

Exam Score = \frac{Target Grade - (Current Grade \times (1 - Weight))}{Weight}

Compute the contribution of your current coursework grades (Current Grade * (1 - Weight)). Subtract this from your target class percentage to determine points needed, and divide by the final exam weight.

Worked Examples & Scenarios

Scenario 1

"My current class grade is 85%, my target overall grade is 90%, and the final exam represents 20% of my total grade. What do I need on the final?"

Formula: Exam Score = [Target - Current * (1 - Weight)] / Weight. Plugging in: [90 - 85 * (1 - 0.20)] / 0.20 = [90 - 85 * 0.80] / 0.20 = [90 - 68] / 0.20 = 22 / 0.20 = 110.0%. (Impossible without extra credit).

Steps:

Find the current grade percentage contribution: Grade * (1 - Final Weight).

Subtract this contribution from the target grade.

Divide the difference by the final exam weight to find the target score.

Scenario 2

"My class grade is 78%, my target is 80%, and final exam is weighted at 25%. What score is needed?"

Points accumulated = 78 * 0.75 = 58.5. Points needed on final = 80 - 58.5 = 21.5. Final exam score needed = 21.5 / 0.25 = 86.0%.

Steps:

Score at least an 86.0% on the final to secure a B (80%) average.

Frequently Asked Questions

Use the final grade formula: Exam Score = [Target Grade - Current Grade * (1 - Final Weight)] / Final Weight. This reveals the percentage grade required on the test.

If the calculator gives a negative result or 0%, it means your current grade is high enough that you have already secured your target grade, even if you fail the final exam.

In a weighted class, grades are split into categories (like tests, homework, and finals). The final exam category weight represents the percentage it counts towards your total final class grade.

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Final Grade Calculator

Enter your current class grade, target average, and exam weight details.

Current Grade (%)

Target Class Grade (%)

Final Exam Weight (%)

Required Final Exam Score

Impossible

Warning: You need a score of 110.0% which is higher than 100%. You cannot achieve your target grade in this course unless extra credit is offered.

Quick Answer & AI Summary

I have an 85% in my class. What score do I need on the final exam (weighted 20%) to get a 90%?

Calculation Formula

Exam Score = \frac{Target Grade - (Current Grade \times (1 - Weight))}{Weight}

Worked Examples & Scenarios

Scenario 1

"My current class grade is 85%, my target overall grade is 90%, and the final exam represents 20% of my total grade. What do I need on the final?"

Steps:

Find the current grade percentage contribution: Grade * (1 - Final Weight).

Subtract this contribution from the target grade.

Divide the difference by the final exam weight to find the target score.

Scenario 2

"My class grade is 78%, my target is 80%, and final exam is weighted at 25%. What score is needed?"

Points accumulated = 78 * 0.75 = 58.5. Points needed on final = 80 - 58.5 = 21.5. Final exam score needed = 21.5 / 0.25 = 86.0%.

Steps:

Score at least an 86.0% on the final to secure a B (80%) average.

Frequently Asked Questions

Use the final grade formula: Exam Score = [Target Grade - Current Grade * (1 - Final Weight)] / Final Weight. This reveals the percentage grade required on the test.

If the calculator gives a negative result or 0%, it means your current grade is high enough that you have already secured your target grade, even if you fail the final exam.

In a weighted class, grades are split into categories (like tests, homework, and finals). The final exam category weight represents the percentage it counts towards your total final class grade.