Weighted grade calculator
Enter each category from the syllabus — its weight and your average in it — and read the grade they add up to.
| Category | Your average % | Weight % | Remove |
|---|---|---|---|
Each category needs both numbers: your average and its weight.
How to use it
- Step 1Copy the categories out of your syllabus — homework, quizzes, tests, the final — and type what each one is worth in the weight column.
- Step 2Put your average in each category in the other column, as a percentage. The rows that are empty are simply left out.
- Step 3The grade under the table is worked out over the weights you have filled in, and it says whether those weights add up to a whole class yet.
Reading the weights off your syllabus
A weighted class says something like: homework 20 %, quizzes 20 %, tests 40 %, final exam 20 %. Those percentages are the weights, and they should add up to 100. Your grade is each category average multiplied by its weight, all added together — so a 95 % homework average in a category worth 20 % puts 19 points into the final grade, while the same 95 % on a final worth 20 % puts in exactly the same 19 points.
Inside a category, the ordinary rules apply: your homework average is the homework points you earned over the homework points available. Work that out first — the grade calculator on this site does it — then bring the percentage here.
When the categories are not complete yet
In the middle of a term some categories have no grades in them at all. Leaving those rows empty is the right thing to do, and the page then works your grade out over the weights that are filled in: if homework and quizzes cover 40 % of the class, the answer is your standing in that 40 %, not your standing in the class.
That number is honest but optimistic or pessimistic depending on what is missing. To see where the class is heading, type the score you expect in the empty categories; the weights then add up to 100 and the page says so.
Weights that do not add up to 100
Sometimes they genuinely do not: a syllabus with extra credit can reach 105, and a badly copied one can land on 95. The page does not silently rescale it — it tells you the total you entered, so that you can go back and check the syllabus rather than trust a grade built on a typo.
Questions and answers
How do weighted grades work?
Each category counts for a set share of the course. Multiply your average in a category by its weight, add those products together, and divide by the weights you used. Homework 90 % at 20 %, tests 80 % at 50 % and a final of 100 % at 30 % make 18 + 40 + 30 = 88 %.
What if my weights do not add up to 100 %?
The page works the grade out over what you entered and shows the total. If the total is not 100, either a category is missing or the syllabus has extra credit in it — worth checking before you trust the letter.
What do I put in for a category with no grades yet?
Leave it empty to see where you stand today, or type the score you expect to see where the class would end up. Both are useful; they answer different questions.
Does dropping my lowest quiz change the calculation?
Only inside that category. Work out your quiz average without the dropped score, then bring that percentage here — the weights themselves do not change.