What the tool does, how to run it, and what to expect from the result.
The geometric mean is the nth root of the product of n numbers. For compounding it is the right average: returns of +10%, +25%, −5% and +5% are factors 1.10, 1.25, 0.95 and 1.05, whose geometric mean is 1.0822, an average 8.22% per year. The arithmetic mean, 1.0875, overstates it; the harmonic mean, 1.0770, is lower still.
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Students, teachers, analysts and researchers working with data.
Using the geometric mean calculator without installing anything or signing up.
Short answers for the questions people usually have before trying a utility like this.
The product-and-root definition needs positive values. Convert percentage changes to factors first: −5% becomes 0.95.
Yes, for yearly growth factors: CAGR = geometric mean − 1.
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For growth factors (1.10 = +10%), the geometric mean minus 1 is the average growth rate per period.