PlainTools

Final Grade Calculator

Enter your current grade, the grade you want and the final's weight and get the score you need on the final exam.

Math & StudyWorldwideSource: Weighted-average arithmeticFree, no sign-up

A = 90, B = 80 on many scales.

From the syllabus.

The result updates as you type.

To finish with 80% when the final is worth 25%

You need 68% on the final

Score on finalFinal course grade
50%75.5%
60%78%
70%80.5%
80%83%
90%85.5%
100%88%

What this page cannot tell you

This assumes your current grade already counts everything except the final, and that the course uses a simple weighted average. Curves, dropped scores, points-based grading and minimum-score rules on the final change the answer; check the syllabus.

Method: needed = (target − current × (1 − w)) ÷ w, where w is the final's weight as a fraction. Calculated in your browser.

How to work out the score you need on a final

  1. Enter your current grade. Your percentage before the final.
  2. Enter the grade you want. For example 90 for an A on many scales.
  3. Enter the final's weight. From the syllabus, as a percentage.
  4. Read the score needed. Plus your final grade for a range of exam scores.

10 reasons students check what they need on a final

Keeping an A

A student at 92% sees how low they can score and keep a 90.

Passing a course

A student at 65% sees what they need to reach 70.

Study planning

Someone decides which final needs the most study time.

Scholarship GPA

A student protects a grade that a scholarship depends on.

Nursing and pre-med prerequisites

A student needs a B in a prerequisite.

High school finals

A parent helps a teen see what score keeps a B.

Heavy final weights

A final worth 40% changes the answer a lot; the page shows how.

Out-of-reach targets

A student sees when a target needs more than 100%.

Group study

Friends compare what each needs.

Teacher explanations

A teacher shows students how weighting works.

How the needed score is calculated

With the final worth w (as a fraction), your course grade = current × (1 − w) + final × w. Solving for the final: needed = (target − current × (1 − w)) ÷ w.

The table shows your course grade for final scores from 50% to 100%.

Limits: this assumes your current grade already reflects everything except the final and that the course uses a weighted average. Curves, dropped scores, points-based grading and minimum final-exam rules change the answer.

Frequently asked questions

What do I need on my final to get an A?

Enter your current grade, 90 as the target and the final's weight; the page shows the score.

How do I calculate my final grade?

Current grade × (1 − final weight) + final score × final weight.

What if I need more than 100%?

The target cannot be reached without extra credit.

Where do I find the final's weight?

In the course syllabus.

Does it work for points-based classes?

Convert your points to percentages first; weighting by points works differently.

What if my current grade includes the final?

Use your grade before the final for this calculation.

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