Geometric Mean Table: Geometric mean by First number
Reference table of geometric mean for Geometric Mean across a range of first number values — exact, engine-computed figures you can read off at a glance.
Geometric Mean Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Geometric mean
6.0000
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Geometric Mean Calculator
The Geometric Mean Calculator works out your geometric mean in an instant. Enter first number and second number and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the first number.
- Enter the second number.
- Read off your geometric mean — the calculator updates automatically, with no button to press.
Formula
The Geometric Mean Calculator uses the formula:
Geometric mean = √(First number × Second number)
Worked example
For example, with first number of 4 and second number of 9, the geometric mean is 6.0000.
| First number | 4 |
|---|---|
| Second number | 9 |
| Geometric mean | 6.0000 |
|---|
Results are estimates for educational use, not professional advice.
Key terms explained
- Mean
- The average of a set of numbers — their sum divided by how many there are.
Frequently asked questions
For two numbers it is the square root of their product. The geometric mean of 4 and 9 is 6.
It suits averaging growth rates, ratios and percentages, where values multiply rather than add.
The arithmetic mean adds and divides; the geometric mean multiplies and takes a root, and is never larger than the arithmetic mean.
The standard geometric mean needs non-negative numbers, since the product must not be negative under the square root.
The Geometric Mean Calculator uses the formula: Geometric mean = √(First number × Second number). For example, with first number of 4 and second number of 9, the geometric mean is 6.0000.
Enter the first number. Enter the second number. Read off your geometric mean — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Geometric Mean: Formula, Steps & Examples
Learn how to calculate Geometric Mean — the formula explained step by step, with worked examples and a free calculator to check your answer.