Enter your assignment scores and their weight percentages to compute your overall grade.
| Assignment | Score (%) | Weight (%) |
|---|
Homework 88 percent at weight 20, midterm 74 percent at weight 30, final 91 percent at weight 50.
85.30 percent, which this calculator reports as a B.
Because the total is divided by the sum of the weights rather than by 100, you can enter weights as any consistent scale — 1, 2 and 5 work exactly as well as 20, 30 and 50 if they are in the same proportion. That also means the calculator can handle a partial term honestly: enter only the items already graded and the result is your current standing among completed work, rather than a figure dragged down by assignments that do not exist yet.
The score field expects a percentage. Entering raw points from assignments marked out of different totals silently weights them by their point value on top of the weight you set, which is not usually what anyone intends. Divide points by the possible total and multiply by 100 first.
Rearrange the formula. If graded work so far totals a weight of W with a weighted sum of S, and you want an overall grade of G with a final worth F, the score you need is (G × (W + F) − S) ÷ F. In the example, if only the homework and midterm were done and you wanted an 85 overall: (85 × 100 − 3,980) ÷ 50 = 92.4. If that number comes out above 100, the grade is not reachable from where you are, which is more useful to know early than late.
This tool uses a straight 90/80/70/60 cut-off with no plus or minus grades, no curving and no rounding rules. Many courses use something different — a scaled curve, a lower A threshold, or a policy on where 89.5 lands. The percentage is the reliable output; check the letter against your own syllabus before treating it as final.
Multiply each score by its weight, add all of those products together, then divide by the total of the weights. The division by the weight total is what makes the result correct even when your weights do not sum to 100.
Take the overall grade you want, multiply it by the total weight of all work including the final, subtract the weighted sum of everything already graded, and divide by the final’s weight. A result above 100 means the target is out of reach; a negative one means you have already secured it.
Yes — enter only the graded items. Since the calculation divides by the weights you actually entered, the result is your standing across completed work rather than an artificially low figure that assumes zeros for everything still to come.
Yes, in your browser on the device you are using. The rows come back the next time you open the page, so you can add each assignment as it is returned. Nothing is uploaded, and clearing your browser data removes the saved rows.
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