Free Grade Calculator 2025 - Calculate GPA, Final Scores & Letter Grades

How the Grade Calculator Works

This calculator determines the minimum grade you need on your final exam to achieve your desired course grade.

The calculation uses the following formula:

Required Final Exam Grade = (Desired Grade - (100% - Final Weight) × Current Grade) / Final Weight

If you have an 85% current grade, want a 90% overall grade, and your final exam is worth 30%:

(90 - (70% × 85)) / 30% = (90 - 59.5) / 0.3 = 101.67%

In this case, you would need 101.67% on your final, which is impossible (maximum is 100%).