Final Grade Calculator
Find the score you need on your final exam to reach the course grade you want, or work out your weighted grade so far.
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Two ways to calculate
Enter your current grade, a target and the final exam weight to see the score you need. Or list assignments with their weights to get your weighted grade so far and the score you need on the rest.
An answer in plain words
The result says whether your target is within reach. If you would need more than 100%, it shows the best course grade you can still get. If you need 0% or less, it shows the grade you keep even with a zero.
Letter scale and what-if table
Pick a target by letter, edit the cutoffs to match your syllabus, and read course grades for final scores from 50% to 100% in steps of 5, with the rows that reach your target marked.
How to calculate the grade you need on a final
- 1
Choose "What do I need on the final?" or "Weighted course grade".
- 2
Enter your current grade and the final exam weight, or add a row for each assignment or category with its score and weight.
- 3
Enter a target course grade as a percentage, or pick a letter from the scale.
- 4
Read the result and the what-if table, then copy the result as text.
What people use this tool for
- Decide before finals week which exam needs the most study time.
- See whether a higher letter grade is still within reach.
- Work out where you stand from homework, quiz and midterm scores with different weights.
- Test how a low or high final exam score would change your course grade.
Frequently Asked Questions
How do I calculate what I need on my final exam?
Multiply your current grade by the share of the course that is not the final, subtract that from your target grade, then divide by the final exam weight. As a formula: required score = (target − current × (1 − weight)) ÷ weight, with the weight written as a decimal, so 30% is 0.30.
Can you show a worked example?
With a current grade of 88%, a target of 90% and a final worth 30%, the other 70% of the course gives you 88 × 0.70 = 61.6 points. You need 90 − 61.6 = 28.4 more from the final, and 28.4 ÷ 0.30 = 94.67, so you need 94.67% on the final. Results are worked out exactly and rounded half up to two decimals once, at the end.
What does it mean if I need more than 100%?
The target cannot be reached without extra credit. The calculator says so and shows the best course grade you can still reach, which is your grade with 100% on the final. With a current grade of 70% and a final worth 20%, a 90% target would need 170%, and the best reachable grade is 76%.
What if the score I need is zero or negative?
Your target is already secured: you would reach it even with a zero on the final. The calculator says so and shows the course grade you would finish with after a 0%.
How does the weighted course grade mode work?
Add a row for each assignment or category, up to 40, with a score and its weight. A score can be a percentage or points earned out of points possible, up to 200% for extra credit. The weighted grade is the sum of score × weight divided by the sum of the weights entered. For example, 92% on homework worth 20% and 17 out of 20 on a midterm worth 30% give (92 × 20 + 85 × 30) ÷ 50 = 87.80%. A row with a weight but no score counts as work still to come.
What if my weights do not add up to 100%?
Under 100%, the rest is treated as work still to come, and with a target entered you see the average score you need on it. Over 100%, a warning appears, because a weight is probably wrong. If the rows that have scores pass 100% on their own, the calculator still shows their weighted average but not a needed score.
Which letter grade scale does it use?
The default is a common US-style scale: A from 90%, B from 80%, C from 70%, D from 60% and F below that. A plus and minus scale, from A+ at 97% down to D- at 60%, is built in too. Schools and instructors vary, so edit any cutoff to match your syllabus. Letters use the grade rounded to two decimals, so check how your school treats borderline grades.
Are my grades saved or uploaded?
Nothing is uploaded; every calculation runs in your browser. Your last entries and letter scale are kept in this browser's local storage, under the key zutilium:final-grade-calculator, so they are still there when you come back. Select Clear to erase them.