Geometric Mean Calculator

Find the geometric, harmonic and arithmetic mean of a list of positive numbers, with the count and product shown.

Geometric mean of your numbers

Geometric mean: —

Harmonic mean: —

Arithmetic mean: —

Count: — · Product: —

The geometric mean is only defined for positive numbers. Everything is calculated locally in your browser.

Type or paste your positive numbers into the box, separated by commas or spaces.
Read the geometric, harmonic and arithmetic means in the result panel.
Check the count and product to confirm every value was picked up.

Common questions about the free online geometric mean calculator.

Type your positive numbers into the box and the geometric mean appears instantly as you type.

It is used for growth rates, averages of ratios, index numbers and any data measured on a multiplicative scale.

The geometric mean is the nth root of the product, which only stays a real number when every value is positive.

The harmonic mean divides the count by the sum of the reciprocals, and it suits rates such as speed over equal distances.

The arithmetic mean adds the values and divides by the count, while the geometric mean multiplies them and takes the nth root.

It is 6, because 4 times 9 is 36 and the square root of 36 is 6.

Yes. Paste a column of numbers and the tool splits them on commas, spaces, tabs and new lines.

It is the result of multiplying every value together, which is the number the geometric mean takes the root of.

No. Every calculation runs locally in your browser, so your numbers never leave your device.

Yes. It is completely free and unlimited, with no account, no sign-up and no usage caps.

Last updated: October 10, 2026