Weighted grade calculator
Calculator
The calculator needs JavaScript. The tables below give the same numbers for common cases.
How it is worked out
- Weighted grade = Σ(score × weight) ÷ Σ(weights) = 8,640 ÷ 100 = 86.4.
- The weights add up to the whole grade.
| Inputs | Answer |
|---|---|
| One item per line: score then weight (%), like 92 20: 92 20 85 30 78 15 88 35 | The weighted grade is 86.4% (weights add up to 100%). |
| One item per line: score then weight (%), like 92 20: 70 50 90 50 | The weighted grade is 80% (weights add up to 100%). |
| One item per line: score then weight (%), like 92 20: 100 10 80 40 60 20 | The weighted grade is 77.14% (weights add up to 70%). |
How to use it
A weighted grade multiplies each score by its weight and divides by the total weight: Σ(score × weight) ÷ Σ(weight). With scores 92, 85, 78 and 88 weighted 20%, 30%, 15% and 35% the grade is 86.4%.
If the weights add up to less than 100% you get your grade on the work graded so far.
Frequently asked questions
How do I calculate a weighted grade?
Multiply each score by its weight, add the results and divide by the total weight.
What if the weights do not add up to 100?
The result is your grade on what has been graded.
How is it different from a plain average?
Items with higher weights count more.
Method: standard arithmetic shown step by step; no outside data is used. Checked 2026-11-12.
About · How we verify this · Editorial policy · Corrections
General information only. Results are plain arithmetic on the numbers you enter; check anything important (money, health, school work) against your own records or the official source.