Weighted average
Combine two values with their relative weights.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
x̄ = (a × w₁ + b × w₂) ÷ (w₁ + w₂)
Variables & units
- First value
- Numeric value · minimum -1000000000000
- First weight
- Numeric value · minimum 0
- Second value
- Numeric value · minimum -1000000000000
- Second weight
- Numeric value · minimum 0
Worked example
80 weighted at 40 and 90 weighted at 60 gives 86.
Assumptions
Weights are relative and do not need to add up to 100.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
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