Geometric Mean Calculator
Find the geometric mean of positive numbers.
The average for growth
The geometric mean multiplies all the values and takes the nth root, which makes it the correct average for things that compound — investment returns, growth rates, and ratios.
The geometric mean of 2, 8, 4, 16 is about 5.66, notably lower than their arithmetic mean of 7.5. For multiplicative data, the geometric mean tells the honest story.
Correct and private
The calculation runs in your browser, so your data is never uploaded.
Frequently Asked Questions
What is the geometric mean?
The nth root of the product of n numbers. It is the right average for rates, ratios, and growth factors.
When should I use it?
For values that multiply, like investment returns or population growth, where the arithmetic mean overstates the average.
Why must values be positive?
The product and its root are only well-defined for positive numbers.
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