Weighted Average Calculator
Calculate the weighted average of values with different weights.
What Is the Weighted Average Calculator?
Assigns different importance to values using weights. Used for GPA, portfolio returns, and grading.
Formula
WA = Σ(value × weight) / Σ(weights)
How to Use
Enter values and weights as comma-separated lists of equal length.
Example Calculation
Values: 85, 90, 78 with weights 3, 2, 5: WA = (255+180+390)/10 = 82.5.
Understanding Weighted Average
Weighted averages are standard in academic grading (GPA), financial portfolio returns, and index calculations like the S&P 500.
Frequently Asked Questions
How is this different from simple average?
Simple average treats all values equally. Weighted average gives more influence to higher-weighted values.