Enter each assignment’s score and weight to get your weighted course grade and letter.
The method behind this calculator
Add a row for each graded item with its percentage score and its weight in the course, and this calculator returns your overall weighted grade and the letter it corresponds to.
It handles any set of weights, so it works whether or not they add to 100%.
How to fill it in
- Add each assignment with its score % and weight %.
- Add as many items as you need.
- Read the weighted grade and letter.
How the number is calculated
grade = Σ(score × weight) ÷ Σ(weight)
The default scenario, worked through
On the values this calculator opens with, the weighted grade is 84.9%. Underneath, Total weight comes out at 100% and Letter at B. Change any field and every figure updates as you type.
FAQ
How is a weighted grade calculated?
Multiply each score by its weight, add those up, and divide by the total weight. Heavier items count more.
Do the weights need to add to 100%?
No — the calculator divides by the total weight, so any consistent weighting works.
How is the letter grade decided?
Using a common US scale (A = 93+, A- = 90+, and so on). Your school’s cutoffs may differ.