math calculator

Weighted Average Calculator

Use this weighted average calculator for worksheet math, quick review, and self-checking when you want a direct answer without rewriting the formula by hand.

Important Use Notice

Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.

Estimate

Enter job values, review the estimate, then use the decision hints before ordering or quoting.

Estimate Results

Enter values to see the result.

Example

80, 0. 2, 90, 0. 3, 95, 0. 5 gives Weighted Average 90. 5.

Formula

weighted average = sum(value x weight) / sum(weights)

Multiply each value by its weight, add the products, then divide by the total weight.

This is useful when some inputs count more than others.

Check

Mixing units or scales across value 1, weight 1, value 2, weight 2, value 3, weight 3 before calculating weighted average.
Confirm that all inputs use the same unit system expected by the formula.

Next Step

FAQ

When should I keep extra decimals for weighted average calculator?

Keep more decimal places when the result will be reused in another formula, drawing, or comparison rather than read once and rounded.

Is weighted average calculator a stable evergreen formula?

Yes. The formula is stable and this tool only covers straightforward calculation.