Grade Calculator
See exactly where you stand, and what the final exam needs to be, with weighted grades that match how your course actually counts things.
Last updated: August 5, 2026
How weighted grades work
Most courses do not treat every assignment equally. The final is worth more than a homework, and the syllabus spells out the weights. A weighted average is your true course standing: each grade multiplied by its weight, summed, then divided by the total weight.
The third result answers the classic exam-week question. If you know your current average, the percentage you want overall, and how much the final counts, the formula solves for the exact score you need — a number that is often more achievable than feared.
The formulas
Worked example
Homework 85% (20%), midterm 90% (30%), final worth 50%.
Average so far = (85×20 + 90×30) ÷ 50 = 88%.
The final swaps that 88% in: to keep a 90 overall, you'd need 90 = 88×(1−0.5) + final×0.5, so the final must be 92%.
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Frequently asked questions
What if my weights don't add to 100%?
The calculator divides by the total weight you entered, so it stays correct for any weighting — including rounds where a syllabus's weights come to 90% and 10% is left for participation you haven't entered yet.
Is this the same as my transcript GPA?
No. This calculator finds a percentage within one class. GPA combines letter grades across all your courses onto the 4.0 scale — see the GPA Calculator for that.
What if a score is impossible to reach?
If the needed final comes out above 100%, that target is mathematically out of reach for the desired letter grade — useful to know early so you can adjust expectations or set a realistic goal.
A maths tool, not your syllabus. Letter-grade boundaries vary by school and course, so confirm the scale used before relying on it.