Final Grade Calculator

Find the exact score you need on your final exam — or final project — to reach a target course grade.

Current grade (%)Target grade (%)Final exam weight (% of course grade)

You need on the final

108.67%

A score above 100% would be required. Lower your target or seek extra credit.

Results update as you type

What-if table — final score required for different target grades
Target grade	Score needed on final	Status
60%	8.7%	Achievable
65%	25.3%	Achievable
70%	42.0%	Achievable
75%	58.7%	Achievable
80%	75.3%	Achievable
85%	92.0%	Achievable
90%	108.7%	Not reachable
95%	125.3%	Not reachable

What this calculator does

This calculator tells you the minimum score required on your final exam (or any single remaining graded item) to hit a target grade in the course. It also shows a what-if table for several common target grades.

Formula

needed = (target − current × (1 − w)) ÷ w

where w is the final exam weight as a decimal (e.g. 0.30 for 30%).

Variable definitions

current — Your current grade in the course before the final, as a percentage.
target — The overall course grade you want, as a percentage.
w — The final exam's share of the course grade as a decimal.

Step-by-step calculation

Convert the final exam weight to a decimal (divide percent by 100).
Multiply your current grade by (1 − weight) — this is the part of the course grade already locked in.
Subtract that locked-in amount from your target grade.
Divide the result by the final exam weight to get the score you need.

Worked example

You currently have an 82 in the class. You want a final grade of 90. The final exam is worth 30% of the course grade.

Weight = 0.30, locked-in = 82 × 0.70 = 57.4
Needed = (90 − 57.4) ÷ 0.30 = 32.6 ÷ 0.30 = 108.7

108.7 is above 100, so a 90 is not reachable unless extra credit is offered. A more realistic target might be 86, which needs about 95.3 on the final.

How to use this calculator

Enter your current grade in the course (before the final).
Enter the grade you want to end the course with.
Enter the percent weight of the final exam from your syllabus.
Read the score you need on the final, plus a what-if table for other target grades.

Common mistakes

Weight vs points: the weight is a percentage of the course grade, not the point value of the exam.
Using earned points vs weighted average: enter your weighted average so far, not raw points earned.
Forgetting locked-in work: if other graded items are still pending, treat their combined weight as a single 'final' for the same math.

Frequently asked questions

›How do I calculate the grade I need on the final?

Take your target grade, subtract the part already earned (current grade × (1 − final weight)), then divide by the final exam weight. The result is the score you need on the final.

›What if the required score is over 100%?

It means your target grade is no longer reachable with the current numbers. Aim for a lower target, or ask if extra credit is available.

›What is the final exam weight?

It's the share of your overall grade that comes from the final exam. If the syllabus says the final is 30% of the course grade, the weight is 30.

›Does this work for any grading scale?

Yes. The formula works in percentages, points, or any consistent scale. Just make sure all three inputs (current grade, target grade, final weight) use the same units.

›What's the difference between this and a GPA calculator?

A final-grade calculator finds what you need on one final exam to reach a target in one course. A GPA calculator combines grades across many courses.

›Can I use this for a final project or paper instead of an exam?

Yes. The 'final exam weight' is really the weight of any single remaining graded item. Enter that weight and the math is identical.

›What if I just want to pass the course?

Set your target to the school's pass threshold (often 60 or 70). The calculator returns the minimum score on the final needed to pass.