Final Grade Calculator

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Current grade:

Grade you want:

Final exam weight:

Answer:

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Calculator Use

Find what grade you need on the final exam to reach a target grade for the course.

If you know your current grade and the weight of the final exam, you can calculate the grade you need on the final to reach your target course grade.

Final Exam Grade Calculation

This calculator uses the formula:

\( F = \dfrac{G - ((1 - w) \times C)}{w} \)

Where:

F = Final exam grade
G = Grade you want for the class
w = Weight of the final exam, divided by 100 (put weight in decimal form vs. percentage form)
C = Your current grade

Final Class Grade Calculation

Sometimes you'll get your final exam grade but the instructor hasn't yet posted final class grades. You can use this calculator to find your final class grade once you know your final exam score. Use the formula:

\( G = Fw + ((1 - w) \times C) \)

Where:

G = Grade you'll receive for the class
F = Final exam grade
w = Weight of the final exam, divided by 100 (put weight in decimal form vs. percentage form)
C = Your class grade going into the final

Example Final Exam Grade Calculation

My grade in Statistics class is 85%. I want to get at least an A- or 90% in the class for the term. What score do I need on the final exam if it is worth 40% of my grade?

Using the Final Exam Grade formula above, I want a 90 in the class and I currently have an 85. The final is worth 40% of the term grade.

First, convert the weight of the final exam from percent to decimal: 40 ÷ 100 = 0.40

\( F = \dfrac{90 - ((1 - 0.4) \times 85)}{0.4} \)

\( F = \dfrac{90 - ((0.6) \times 85)}{0.4} \)

\( F = \dfrac{90 - 51}{0.4} \)

\( F = \dfrac{39}{0.4} \)

\( F = 97.5 \)

So if I have an 85 in the class, I want a 90, and the final exam is worth 40%, I need a 97.5 to get a 90 in the class.

Example Final Course Grade Calculation

Going into finals my grade in Economics was 91%. My final exam score was 88.6% and it was worth 15% of my grade for the course. What is my final grade in the course?

Using the Final Class Grade formula above, F = 88.6, w = 15, and C = 91.

First, convert the weight of the final exam from percent to decimal: 15 ÷ 100 = 0.15

\( G = 88.6 \times 0.15 + ((1 - 0.15) \times 91) \)

\( G = 88.6 \times 0.15 + (0.85 \times 91) \)

\( G = 88.6 \times 0.15 + 77.35 \)

\( G = 13.29 + 77.35 \)

\( G = 90.64 \)

So I went into the final with a class grade of 91. I got 88.6 on the final which was worth 15% of the course grade. My final grade in the class was 90.64.