Final Grade Calculator
Final grade calculator: the score you need on the final for every letter grade Free, no sign-up, and it runs in your browser.
Dedicated page: /en/final-grade-calculator
From your syllabus, often 20% to 40%.
Your grade so far, without the final. Or build it below from categories.
Build my current grade from weighted categories
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Quick answer
A final grade calculator works out the score you need on your final exam to reach the grade you want. Enter your current grade and how much the final is worth, and it solves the weighted average backwards: with 87% now and a final worth 30%, you need 97% to finish with 90%.
About this Final Grade Calculator
Final grade calculator: the score you need on the final for every letter grade It is one of the Work and School on ToolUstad, and like every tool here it runs entirely in your browser: nothing you type, paste or open is uploaded to a server, and there is no sign-up or usage limit.
What is a final grade calculator?
A final grade calculator answers the most common question in December and May: what do I need on the final? You know your current grade, and you know how much the final is worth from your syllabus. The calculator solves the weighted average backwards and tells you the score you need. With 87% going into a final worth 30%, you need 97% to finish with an A minus at 90%, but only 87% to keep your B plus, and even a zero leaves you at 60.9%. The exact score depends on your class weights and grading scale, and the calculator shows every letter at once so you can pick a realistic target.
The formula is one line. Your course grade blends your current grade and the final score: course grade equals current grade times one minus the weight, plus final score times the weight. Solving for the score needed to reach a target gives: needed equals target minus current grade times one minus the weight, all divided by the weight. The calculator shows the working with your own numbers, so the answer is not a black box: 87 times 0.7 is 60.9 points locked in, 90 minus 60.9 is 29.1 points still needed, and 29.1 divided by 0.3 is 97%.
The letter table and the grading scales
The table on the page runs the same calculation for every letter grade, so you can see the trade-offs in one glance: what an A costs, what a B costs, and what is already secured. Two scales are built in, because schools do not agree. The 10-point scale sets A at 90, B at 80, C at 70 and D at 60.
Building your current grade from categories
Many students do not know their current grade as a single number: they know homework, quizzes, a midterm and participation. The weighted category builder on the page takes up to five categories, each with a score and a weight, and works out the current grade. Homework 88% at 20%, quizzes 82% at 15%, midterm 85% at 25% and participation 95% at 10% give 86.4% on 70% of the course.
Best practices
- Check the weights first: a wrong weight moves the answer more than a wrong current grade does, so read the syllabus, not the gradebook summary.
- Pick a realistic target: if an A needs 108%, aim for the B and spend the study time where it pays off.
Common mistakes to avoid
- Forgetting that the locked-in part is already decided: with 87% and a 30% final, 60.9 points are already yours, and only 30 points are still in play.
- Assuming the scale: plus-and-minus and 10-point cut-offs give different answers for the same percentage.
Who is the final grade calculator for?
High school and college students heading into finals, teachers working out what a student needs, and parents helping a student plan study time across several subjects with different stakes.
Related terms: what do I need on my final, final exam grade calculator, weighted grade calculator, grade calculator, letter grade scale, GPA points, course grade calculator.
Results are estimates for planning and education, not a guarantee: your teacher's scale, curves and policies decide the final grade.
Learn: how to use the Final Grade Calculator
- Enter your current grade and how much the final is worth, from your syllabus.
- Pick the grade you want, or switch to the grade-after-the-final mode.
- Read the score you need, the table for every letter grade, and the what-if scenarios.
Features
- Score needed on the final for any target grade
- Letter table: A to F, with plus-and-minus or 10-point scales
- What-if scenarios: course grade for final scores from 0 to 100
- Course grade after the final, with letter and GPA points
- Weighted category builder for your current grade
- Formula shown with every step worked
- Impossible and already-secured verdicts, not just a number
Worked example
Current grade 87%, final worth 30%, target 90%: the locked-in part is 87 times 0.7, which is 60.9 points. You still need 29.1 points from the final, and 29.1 divided by 0.3 is 97%. A perfect final gives 90.9%, and even a zero leaves you at 60.9%. For a B at 80%, you need only 63.7% on the final.
Frequently asked questions
What do I need on the final to get an A?
It depends on your current grade and the final's weight. With 87% now and a final worth 30%, you need 97% for an A minus at 90%. The formula is target minus current grade times one minus the weight, all divided by the weight.
What if the score I need is over 100%?
Your target is out of reach on the final alone, without extra credit or a curve. With 84% now, a final worth 25% and a goal of 90%, you would need 108%. Drop the target a letter, or ask your teacher about extra credit.
What if the score I need is zero or less?
You have already secured the grade: even a zero on the final leaves you above your target. With 87% now and a final worth 30%, a target of 60% is already secured, because the locked-in part alone is 60.9%.
How is my current grade calculated from categories?
Each category score is multiplied by its weight and the results are added, then divided by the total weight. Homework 88% at 20%, quizzes 82% at 15%, midterm 85% at 25% and participation 95% at 10% give a weighted grade of 86.4% on 70% of the course.
What is the difference between the two grading scales?
The plus-and-minus scale sets A at 93, A minus at 90, B plus at 87, B at 83 and so on. The 10-point scale sets A at 90, B at 80, C at 70 and D at 60. Your syllabus wins: schools use different cut-offs.
Does the final grade calculator work for points-based classes?
Yes. In a points class the final's weight is its points divided by the course total: a 200-point final in a 1,000-point course is worth 20%. Enter 20 as the weight and use percentages for your current grade.
How does my final grade affect my GPA?
Each letter is worth grade points on a 4.0 scale: A is 4.0, A minus is 3.7, B plus is 3.3, B is 3.0, C is 2.0 and F is 0.
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