Weighted Grade Calculator — Scores and Weights to Your Course Grade

Real-world use cases

• Check your real course grade mid-semester

  Your syllabus says homework 20%, two midterms 20% each, a project 15%, the final 25%. Halfway through you have homework, both midterms, and the project graded but not the final. Type those four rows with their weights, leave the final out, and read "current grade" — that is your standing on graded work right now. "Banked / 100" tells you that 75 of the 100 final points are already locked in, so the worst the final can do is cost you the last 25.

• Decide how hard to study for the final

  You have 84% banked across everything except the 30%-weight final. Paste your gradebook, then add a final row and try different scores: a 70 on the final drops you to a B; a 90 keeps you at an A-. Watching the letter flip as you change one number tells you exactly where the cliff is, so you study to the grade you actually need instead of guessing.

• Reconcile a grade that does not match the LMS

  Canvas shows 88 but your own math said 91. Enter every item exactly as the syllabus weights them and compare. Usually the gap is that the LMS is dividing by the weight of graded items only (current standing) while you divided by 100, or an ungraded item is silently counting as zero. Seeing both "current grade" and "banked / 100" side by side shows which assumption each system is making.

• Plan a fair weighting as a teacher

  You are building a syllabus and want a representative student to land around a B. Drop in plausible scores — strong homework, a shaky midterm, a solid final — and nudge the weights until the overall grade and letter feel right. Because the tool normalizes by the actual weight sum, you can test a partial scheme before you have decided every component.

• Combine sub-grades into one component

  Your "participation" grade is itself three things: attendance, discussion posts, and a reflection. Put those three as rows with their internal weights, read the current grade, and that single number is your participation score — which you can then feed as one weighted row into your full course gradebook.

Common pitfalls

• Dividing by 100 instead of by the sum of weights before the term is over. With only 75% of weights graded, dividing the weighted sum by 100 understates your grade — that number is "banked / 100", not your current standing. The current grade divides by the actual 75.

• Treating a missing item as a zero. Leaving the final out of the gradebook is not the same as entering it as 0. An empty row (or no row) means "not graded yet" and is excluded; a 0 means you scored nothing and tanks the average. Only enter scores that actually happened.

• Mixing weight units. If your syllabus lists points (homework 200 pts, final 400 pts) rather than percents, you can enter the raw point values as weights — the normalization handles it — but do not mix points and percents in the same gradebook, or the bigger unit silently dominates.

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