Grade calculator — points, weighted categories and required final-exam score
Work out your grade from points or from weighted categories, drop the lowest score, and find the final-exam mark you would need for a target grade. Nothing you enter is saved or sent anywhere.
Runs in your browser — your input is not uploaded to ToolsNow.
Nothing you enter is saved or sent anywhere — the calculation happens in this page and reloading clears it. There is no universal grading system, so treat every default here as a starting point and check it against your syllabus. Three things in particular differ between institutions and change the answer: whether a weighted average is taken over all categories or only the graded ones (this tool uses only the graded ones, so an empty category is not counted as a zero), whether the lowest score is dropped by percentage or by raw points (this tool uses percentage), and how the final figure is rounded before a letter is assigned. Points mode weights each assignment by its size, so a 100-point exam moves your grade far more than a 5-point quiz — it is not the average of the individual percentages.
How to use
- Pick a mode. Points for a simple total, Weighted when your syllabus assigns percentages to categories, Final exam to work backwards from a target.
- Enter what you have. Points earned and points possible for each assignment. Add as many rows or categories as you need.
- Set the weights, if any. The tool checks that they add to 100% and tells you when they do not, rather than quietly normalising them.
- Try the options. Drop the lowest score, or enter a what-if exam mark to see where you would finish.
- Adjust the boundaries. The letter grades default to a common US-style scale. Change them to whatever your institution actually uses.
Questions
How is a weighted grade calculated?
Each category gets a percentage from its own assignments, that percentage is multiplied by the category’s weight, the results are added, and the total is divided by the weight that has actually been graded. The last step is the one that matters early in a term.
What happens to a category with no marks yet?
It is excluded, and the tool says so. The alternative — treating it as a zero — is a genuine bug that makes a student with one good homework score look like they are failing, because a 60%-weighted final they have not sat yet counts against them. What you get here is your standing across the portion that has been graded, which is a different and more useful number than a prediction of your final grade.
Is points mode just the average of my percentages?
No. Points mode divides total points earned by total points possible, so each assignment counts in proportion to its size. A 100-point exam moves your grade twenty times as much as a 5-point quiz. Averaging the percentages instead would treat them as equal, which is a different scheme and gives a different answer.
How does dropping the lowest score work?
The lowest is chosen by percentage, not by raw points. Dropping by raw points would discard a 4-out-of-5 ahead of a 40-out-of-100, which is not what anyone means by it. The dropped assignment stays visible and is named, so you can see what the improvement came from.
Why does it say my target is impossible?
Because the arithmetic says the exam would need a score above full marks. If the exam is worth 20% and you are at 85%, the most it can move you is a few points — the other 80% of your grade is already fixed. The required figure is still shown so you can see how far out it is, and a low-weighted exam simply cannot rescue a large gap.
Are these results official?
No. There is no universal grading system, and the details that differ between institutions all change the answer: whether ungraded work counts as zero, how the lowest score is dropped, and how the final figure is rounded before a letter is assigned. Use this to understand your position and plan; check the number that counts against your syllabus and your institution’s own system.
Is my data saved?
No. Everything stays in the page, nothing is written to storage, and reloading clears it. That is deliberate — grades are exactly the sort of thing that should not be sitting in a browser profile or on somebody else’s server.