Calculate the geometric mean of positive values

Analysts and students use it to summarize positive rates or growth factors without letting the largest values dominate the result.

Calculate the geometric mean of positive values. Everything runs in your browser, so the values you enter are never uploaded, shared, or stored.

How to use

Enter your positive values in the input field, separating them with spaces or commas.
Check that no value is zero or negative, because the geometric mean here expects positive numbers.
Run the calculation to get the geometric mean of the series.
Review the result by comparing it with the general scale of the values you entered.
Clear the field to work on another series or to fix a value that was separated incorrectly.

Example

With the series 2, 8 and 32, the tool multiplies the values together before extracting the corresponding root. See whether the result sits within the range of the numbers you entered, then compare it with an arithmetic mean if your analysis calls for that.

Input

2, 8, 32

Limits and formats

The tool is not suitable for series containing zero or negative numbers, because the requested calculation relies on positive values.
It does not replace a full statistical analysis: it gives no median, standard deviation or hypothesis test.
Values must be separated clearly; a missing separator can merge two numbers or leave one out.
For rates, check that percentages have been converted into multiplicative factors if your method requires it.

Where processing happens

The geometric mean calculation runs in your browser. The values you enter do not leave your device and are not stored by the tool. You can work on test series, growth rates or comparison factors without an account.

Frequently asked questions

When should I use the geometric mean?

It is useful for summarising rates, multiplicative factors or positive growth, because it treats values as successive multiplications. For additive data or independent amounts, the arithmetic mean is often more appropriate.

Can I enter percentages?

The tool expects positive values. If your data is in percentages, convert it into multiplicative factors that fit your calculation, for example by adding 1 when the figure represents a change.

What happens if I forget a comma?

The separator helps the tool tell values apart. If two numbers are joined together, the result may be based on a different series than intended. Read the list again and separate each value before rerunning.