Weighted Grade Calculator
Your overall course grade from assessments with different weights — and what each one contributed.
A course grade is a weighted average of its assessments.
How the weighted grade calculator works
A course grade is a weighted average of its assessments. Each mark counts in proportion to its weight, so a 50% exam moves the grade five times as much as a 10% quiz scored equally well.
The contribution column is the useful one. It shows the percentage points each assessment actually put into your final grade, which is usually more informative than the mark itself — a 95% on something worth 5% contributes 4.75 points, while a 60% on something worth 40% contributes 24.
If the weights do not sum to 100%, the page says so and normalises rather than silently returning a wrong number.
Formula: grade = Σ(mark × weight) / Σ weight
Worked examples
| Inputs | Course grade | Note |
|---|---|---|
| Four assessments totalling 100% | 78.1% | 77.9% |
| Partway through a course | 78.667% | normalised over 30% |
| Equal weights | 85% | 85% |
FAQFrequently asked questions
How do I calculate a weighted grade?
Multiply each mark by its weight, add them up, and divide by the total weight.
What if my weights do not add to 100?
The grade is normalised over what you entered, and the page tells you. That is the right answer partway through a course.
Why does a small assessment barely move my grade?
Because its weight is what counts. A 95% on something worth 5% adds 4.75 points; a 60% on something worth 40% adds 24.
Which assessment should I focus on?
The one with the most weight still ahead of you — that is where the remaining variance is.
Does this handle dropped lowest scores?
No. If your course drops the lowest mark, leave it out of the lists.
Where these figures come from
- Brysbaert (2019), Journal of Memory and Language — How many words do we read per minute? — the 238 wpm silent reading rate, from 190 studies
- Office for Students — the regulator for English higher education
Last checked: September 2026. Reading and writing rates are from published meta-analyses, cited on the page.