CALCULATOR TOOL

Average Calculator — Mean, Median & Weighted Average

Calculate arithmetic or weighted averages, median, sum, count and range. Enter numbers and optional weights with calculation steps.

Average Calculator — Mean, Median & Weighted Average

FREE ONLINE TOOL

STEP BY STEP

How to use average calculator — mean, median & weighted average

  1. Read the result and calculation method.
  2. Compare the example and check the assumptions.

IN PRACTICE

Example

2, 4 and 6 have a mean and median of 4. Weights 1, 1 and 2 give a weighted mean of 4.5.

GOOD TO KNOW

What should I check?

All entries must be finite numbers.

Weights must be nonnegative with a positive total. Median is unweighted. This is not a geometric mean or compound return calculator.

Formula and method

Mean = sum / count. Weighted mean = Σ(value × weight) / Σweights. Median is the middle sorted value, or the mean of the two middle values.

Worked example

2, 4 and 6 have a mean and median of 4. Weights 1, 1 and 2 give a weighted mean of 4.5.

Limits and assumptions

Weights must be nonnegative with a positive total. Median is unweighted. This is not a geometric mean or compound return calculator.

Frequently asked questions

How is the result calculated?

Mean = sum / count. Weighted mean = Σ(value × weight) / Σweights. Median is the middle sorted value, or the mean of the two middle values.

What should I check before using it?

Weights must be nonnegative with a positive total. Median is unweighted. This is not a geometric mean or compound return calculator.