Statistics calculator
Weighted Average Calculator
Calculate a weighted average from three values and their weights.
Formula
Weighted average
Weighted average = sum(value x weight) / sum(weights)
Scores weighted 40, 35, and 25 percent combine into one weighted score.
FAQs
Do weights need to add to 100?+
No. The calculator divides by the total weight entered.
Can weights be zero?+
Yes. A zero-weight value does not affect the average.
How does the Weighted Average Calculator calculate the result?+
It uses the Weighted average: Weighted average = sum(value x weight) / sum(weights). Scores weighted 40, 35, and 25 percent combine into one weighted score.
What information do I need to use the Weighted Average Calculator?+
Calculate a weighted average from three values and their weights.
How accurate is the Weighted Average Calculator?+
Weighted Average Calculator applies the formula and assumptions shown on this page. Results may be rounded for readability, so verify changing rates, thresholds, medical guidance, or legal rules with the cited source or a qualified professional.
What should I check before using the Weighted Average Calculator result?+
Check that the units, dates, rates, and assumptions match your situation. Change one input at a time to understand which values have the largest effect on the result.
Statistics guide
How to use the Weighted Average Calculator
Calculate a weighted average from three values and their weights. The page also explains the weighted average and shows a practical example: Scores weighted 40, 35, and 25 percent combine into one weighted score.
- 1
Enter your details
Enter three values and their weights, then complete any other fields shown in the calculator.
- 2
Check the calculation
Review the result alongside the weighted average: Weighted average = sum(value x weight) / sum(weights).
- 3
Compare scenarios
Change one or more inputs to see how they affect the weighted Average Calculator result before you use the estimate.
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