Geometric Mean Calculator
Find the multiplicative average of positive observations using a logarithmic calculation.
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How to use Geometric Mean Calculator
The geometric mean is exp(sum(log(value)) ÷ count). Working in logarithms avoids multiplying the entire list into an overflowing product.
- Enter positive numbers.
- Check that the input follows the stated limits and uses consistent units.
- Run the calculator, review the result, then copy or download it.
Good to know
- Every observation must be strictly positive. For returns, enter positive growth factors such as 1.05 rather than percentage changes such as 5.
- Decimal inputs have at most 120 characters and magnitude from 1e-100 to 1e15, or zero. Floating-point results are rounded to 12 significant digits; extreme derived results may underflow or be rejected. Exact integer results are identified separately.
Common questions
What calculation does Geometric Mean Calculator perform?
The geometric mean is exp(sum(log(value)) ÷ count). Working in logarithms avoids multiplying the entire list into an overflowing product.
Can I average positive and negative values?
This real-valued geometric-mean tool accepts only positive observations. It does not implement complex roots or signed conventions.
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