Unit Converter
Weighted Average Calculator
Calculate a weighted average from three values and their weights.
Formula and usage notes
weighted average = sum(value x weight) / sum(weights).
Calculate a weighted average from three values and their weights.
Practical examples
Scores 85, 92, 78 with weights 30, 50, 20 average to 87.1.
Weights can be percentages or points as long as they use one scale.
A zero total weight cannot produce a weighted average.
Frequently asked questions
What inputs does this calculator need?
Value A, Weight A, Value B, Weight B, Value C, Weight C.
How should I round the result?
Keep extra digits while comparing values, then round for the final decision or report.
Can I reuse the result in another calculation?
Yes, but preserve the original inputs and units so the next calculation stays traceable.