Arithmetic Mean Calculator
Calculate the arithmetic mean, sum, and other basic statistics for a list of numbers.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter a list of numbers separated by commas or spaces to calculate their arithmetic mean — the sum divided by the count.
Enter numbers separated by commas or spaces.
Your result
30
Arithmetic mean
Sum150
Count of numbers5
AI explanation
Formula
Arithmetic mean = Sum of all numbers / Count of numbersWorked example
10, 20, 30, 40, 50
| Field | Value |
|---|---|
| Numbers | 10, 20, 30, 40, 50 |
| Arithmetic mean | 30 |
| Sum | 150 |
| Count of numbers | 5 |
Assumptions
- Enter at least one number, separated by commas, spaces, or both.
- The arithmetic mean is one of several types of "average" — see the Geometric Mean and Harmonic Mean calculators for others used in specific contexts.
Frequently asked questions
What is the arithmetic mean?
It's the sum of a set of numbers divided by how many numbers there are — the most common type of "average" used in everyday contexts.
When would I use geometric or harmonic mean instead?
Geometric mean is used for compounding growth rates or ratios; harmonic mean is used for averaging rates like speed. For a general list of values, arithmetic mean is the standard choice.
Is arithmetic mean sensitive to outliers?
Yes — a single very large or very small value can significantly pull the arithmetic mean. The median (see the Mean, Median & Mode Calculator) is more resistant to outliers.