Weighted Average Calculator
Find an average where some values count more than others, such as a course grade.
Weighted Average
Find an average where some values count more than others.
Weighted average
83
- Total weight: 100
- Pairs used: 2
How it works
Enter each value with its weight. A weight can be a percentage, a number of credits, a quantity — any consistent measure of how much that value counts.
Each value is multiplied by its weight, the results are added together, and the total is divided by the sum of the weights.
Weights cannot be negative, and they cannot all be zero. Weights do not need to add up to 100 — only their proportions matter.
Formula
weighted average = (v₁×w₁ + v₂×w₂ + …) ÷ (w₁ + w₂ + …)
Worked example: A score of 90 weighted 30 and a score of 80 weighted 70 gives a weighted average of 83