Weighted Average Calculator

Calculate the weighted average of values that don’t all count equally, such as grades with credits or prices with quantities.

What is the Weighted Average Calculator?

In a weighted average, each value is multiplied by its weight, so values with more weight influence the result more.

How does it work?

Enter each value and its weight on a line. The calculator divides the sum of value × weight by the total weight.

Formula

Weighted average = Σ(value × weight) ÷ Σweight

Example

Marks 85 (4 credits), 72 (3), 90 (2) and 65 (1) give a weighted average of 80.1, while the simple average is 78.

Frequently asked questions

Do weights need to add up to 100?

No. Any positive weights work; they are normalised by their total.

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