Almost no course grade is a simple average. An assignment worth 10% and a final exam worth 50% do not count equally, so averaging your scores gives a number that is wrong — usually flattering, occasionally alarming, always misleading.
Enter each assessment with its score and its weight and this calculator does the weighted arithmetic: every score is multiplied by its weight, the results are added, and the total is divided by the weight you have entered. It works whether your weights cover the whole course or only the parts marked so far.
Multiply each score by its weight, add those products together, then divide by the total weight. For a course with coursework at 40% and an exam at 60%, scoring 75 and 62 gives (75 × 40 + 62 × 60) ÷ 100 = 67.2%.
The plain average of 75 and 62 is 68.5% — close here, but the gap widens fast as weights diverge. With coursework at 10% and an exam at 90%, the same two scores give 63.3% weighted against the same 68.5% average: a five-point error, and often the difference between two classifications.
Enter only the assessments already marked and this calculator divides by the weight you entered rather than by 100. The result answers a precise question: given what has been marked so far, what is your average across that portion?
That is genuinely useful, but it is not a prediction. It assumes the remaining assessments go as the earlier ones did, and it says nothing about whether the final exam is harder than the midterm. Treat it as a snapshot of where you are, and use the required marks calculator to find out what you need next.
Take the weights from your course outline or syllabus, not from memory. They are the numbers next to each assessment, and they should add to 100 across the whole course. Where a category is split — "quizzes: 20% total" across four quizzes — either enter each quiz at 5%, or average the quizzes first and enter the category once at 20%.
Watch for hurdle requirements: some courses require a minimum mark on the final exam or on a practical component regardless of your weighted total. A weighted grade cannot capture a hurdle, so check your outline for one before relying on the number.
The letter shown here follows the common scheme where 90 and above is an A, the 80s are B grades, the 70s are B− to C+, and 50 is the usual pass mark. Institutions vary, and some apply different boundaries per faculty.
Check your own institution's scale before drawing conclusions from the letter, particularly near a boundary. A percentage is portable; a letter grade is local.
This calculator shows two decimal places so you can see exactly where you sit. Institutions differ on what happens next: some round to the nearest whole number, some round up at the half, and some do not round at all.
If you are within a point of a grade boundary, do not assume rounding will carry you over. Find the rule in your assessment regulations, and where it matters enough, ask the course coordinator rather than guessing.
An average treats every score equally. A weighted grade multiplies each score by how much that assessment counts, which is how courses are actually graded when assignments and exams carry different weights.
Not for the calculator to work. If they add to less than 100, the result is your average across the assessments you entered — useful for checking where you stand mid-semester.
Either enter each quiz separately with an equal share of the 20%, or average the quiz scores yourself and enter one row at 20%. Both give the same answer.
Convert them to percentages first — 15 out of 20 is 75. Mixing raw marks with percentages in the same calculation produces a meaningless result.
No. The calculation runs in your browser and nothing is transmitted or stored.