Weighted Average Calculator combines values that should not count equally. Use it for grades, portfolio returns, survey means with unequal sample sizes, or any mix of numbers with different weights. In this article you will learn how to add value and weight rows and compare the weighted mean to a simple average.
The tool is at form.ms/tools/weighted-average-calculator.
1. Open the calculator
Go to the Weighted Average Calculator. Weighted average is the sum of (value times weight) divided by the sum of the weights.
2. Add rows
Type a Value and Weight on each row. Weights can be percents, credits, dollars, or counts. Click Add row if you need more. If every weight is equal, the result matches a simple average.
3. Compare the two means
The page shows the weighted average next to the unweighted mean. For one class from assignment percentages, letter, and GPA points, use the Class Grade Calculator.
Nothing is stored. For a course gradebook, prefer the class grade tool.
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