Weighted Average Calculator

Use our free weighted average calculator to find the weighted mean. Each value can have a different weight reflecting its importance.

Math

Values

Weights

Formula

A weighted average assigns different weights to values based on their importance. It is calculated by multiplying each value by its weight, summing the results, then dividing by the total weight.

Weighted Avg = Σ(Value × Weight) / Σ(Weight)

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

How It Works

1Enter your values separated by commas.
2Enter the corresponding weights separated by commas.
3Each value is multiplied by its weight.
4The weighted sum is divided by the total weight.
5The result shows each weighted product and the final average.

Examples

Weighted average of grades

1.Enter values: 85, 90, 78, 92
2.Enter weights: 20, 30, 25, 25
3.Weighted sum: (85×20) + (90×30) + (78×25) + (92×25) = 1700 + 2700 + 1950 + 2300 = 8650
4.Total weight: 20 + 30 + 25 + 25 = 100
5.Weighted average: 8650 ÷ 100 = 86.5

Result: 86.5

Frequently Asked Questions

Weighted averages are commonly used for calculating course grades (where assignments have different weights), investment portfolio returns, and survey data analysis.

Yes, decimal weights are fully supported. For example, you can use weights like 0.2, 0.3, 0.5.

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CalculateMe Team

Last updated: 2026-07-13

Weighted Average Calculator

Formula

How It Works

Examples

Weighted average of grades

Frequently Asked Questions

What are common uses for weighted averages?

Can I use decimal weights?

Related Calculators

Weighted Average Calculator

Formula

How It Works

Examples

Weighted average of grades

Frequently Asked Questions

What are common uses for weighted averages?

Can I use decimal weights?

Related Calculators