✳️ Geometric Mean Calculator
Ideal for growth rates and ratios. Paste positive numbers to compute the geometric mean, geometric standard deviation, and product of values using log-safe methods that avoid overflow.
Dataset Input
Values must be positive (> 0)
Paste directly from spreadsheets. Negative or zero values are ignored to keep the geometric mean valid.
Geometric Mean
—
Geometric Std. Dev.
—
Log Mean
—
Count
—
Summary
No values analysed yet.
Insights
- No values analysed yet.
How to Use
- Paste positive values into the input box.
- Click Calculate Geometric Mean. Zero or negative entries are ignored because they invalidate the geometric mean.
- Review the geometric standard deviation to understand multiplicative spread.
- Use the insights section to check for ignored values and ratio-style interpretation (e.g., ±GSD boundaries).
- Clean or reset when evaluating another dataset.
Formula Reference
Geometric mean \( G = \exp\left( \frac{1}{n} \sum \ln x_i \right) \). Geometric standard deviation \( GSD = \exp\left( \sqrt{\frac{1}{n} \sum (\ln x_i - \overline{\ln x})^2} \right) \). Only defined for \( x_i > 0 \).