Final Grade Calculator

About this calculator

This calculator tells you the exact score you need on your final exam to finish the course with a target grade. Enter your current grade, your target course grade, and how much the final is worth — and the result is instant. If the required score exceeds 100%, the target is mathematically out of reach, which is itself useful to know before the exam.

How to read your results

The headline figure is the score you must earn on the final exam, shown with a verdict badge — reachable, out of reach, or already secured. The outcome track plots the band the final controls on a 0–100 scale: it starts at your lowest guaranteed grade (a 0 on the final) and fills up to your best possible grade (a 100 on the final), with a marker for your target. When your target sits inside that band, the score you need is reachable; when it sits beyond the band ceiling, no exam result gets you there and the track is shown at risk; when it sits below the band start, your target is already secured.

How it's calculated

The required final score is derived from the weighted-average course grade formula: course grade = current × (1 − w) + final × w, where w = finalWeight / 100. Rearranging to isolate the final exam score gives: required = (target − current × (1 − w)) / w. The best-case course grade assumes a perfect 100 on the final; the worst-case assumes 0. Both are computed from the same formula with the final score substituted in. Sources: Northern Arizona University, How to Calculate Grades (https://www.cefns.nau.edu/~edo/Classes/HowtoCalcGrades.html); University of Arizona CS120 Grading Information (https://www2.cs.arizona.edu/classes/cs120/fall17/grading-info.html); Weighted arithmetic mean (https://en.wikipedia.org/wiki/Weighted_arithmetic_mean).

Worked example

Current course grade 78, target course grade 80, final worth 40% of the course.

Required final score: 83. Best possible course grade: 86.8. Worst case (score 0 on final): 46.8.

Frequently asked questions

What is the formula behind this calculator?

Course grade = current × (1 − w) + final × w, where w is the final weight expressed as a decimal. Solving for the final score gives: required = (target − current × (1 − w)) / w. This is the standard weighted-average grading model used by universities.

What does it mean when the required score is above 100?

It means your current grade is too low to reach the target no matter how well you do on the final. The maximum possible course grade is shown in the outcome chart — if that maximum is still below your target, the target is out of reach. Use this as early warning to adjust your target or speak with your instructor.

What if the required score is negative or zero?

A negative or zero required score means you have already secured the target grade even if you skip the final (score 0). You still need to sit the exam if attendance is required, but your course grade is safe.

How do I find my current grade and the final weight?

Your current grade is the cumulative score for all coursework completed so far, usually shown in your learning management system. The final weight is listed in the course syllabus — common values are 20%, 30%, or 40%.

Does the calculator account for extra credit or dropped scores?

No. Enter your current grade after any drops or extra credit have already been applied by your instructor. The calculator uses a single current-grade value and a single final weight.

Sources

• www.cefns.nau.edu/~edo/Classes/HowtoCalcGrades.html
• www2.cs.arizona.edu/classes/cs120/fall17/grading-info.html
• en.wikipedia.org/wiki/Weighted_arithmetic_mean

Reviewed by the YouCalc Team · Last reviewedJune 11, 2026