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SnapCalculations

Final Grade Calculator

Enter your current grade, the grade you want and how much the final is worth to see exactly what you need on the exam.

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%
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How much the final counts toward your course grade.

Score you need

108%

More than 100%: not reachable without extra credit

To finish with A (90%)
Not reachable
To finish with B (80%)
68%
To finish with C (70%)
28%
To finish with D (60%)
0%

Step-by-step solution

Worked out with your numbers. Change any value above and the steps update.

  1. 1

    Your current grade counts for the rest of the course

    84 × (1 − 0.25) = 63

  2. 2

    Points still needed for your target

    90 − 63 = 27

  3. 3

    Divide by the final's weight

    27 ÷ 0.25 = 108%

How it works

  • Your final course grade = current grade × (1 − final weight) + final exam score × final weight.
  • Rearranged: score needed = (target − current × (1 − weight)) ÷ weight.
  • A result above 100% means the target can't be reached without extra credit; 0% or less means you've already secured it.

Worked examples

Aiming for an A

You have 84% and want 90%. The final is worth 25%. What do you need on it?

  1. Your 84% counts for 75% of the course: 84 × 0.75 = 63.
  2. You need 90 − 63 = 27 more points from the final.
  3. 27 ÷ 0.25 = 108%.

Answer: 108%: not reachable without extra credit (a B needs 68%)

Try this example

Holding on to a B−

You have 78% and want to finish with 80%. The final counts for 30%. What score do you need?

  1. 78 × 0.7 = 54.6 points already locked in.
  2. 80 − 54.6 = 25.4 points needed.
  3. 25.4 ÷ 0.3.

Answer: 84.67% on the final

Try this example

Frequently asked questions

What is the final exam weight?

The percentage of your course grade that the final counts for, usually listed in the syllabus. For example, a final worth 25% of the grade has a weight of 25.

Results are estimates for general information and are not financial, medical or professional advice.