Math & Conversion
Weighted Average Calculator
Pair each value with a weight to calculate an average that reflects the relative importance of each item.
How to use
Enter the values requested above. Pair each value with a weight to calculate an average that reflects the relative importance of each item. The result is calculated in your browser.
Formula
Weighted average = Σ(value × weight) ÷ Σ(weights).
Example
What is the weighted average of 80 at weight 2 and 90 at weight 3?
(80 × 2 + 90 × 3) ÷ 5 = 86.
Frequently asked questions
- Do the weights need to add up to 100?
- No. Any non-negative weights work as long as their total is greater than zero.
- Are my entries stored?
- No. The calculation runs in your browser, and this page does not save the values you enter.