What is the Average Calculator?
The average, or arithmetic mean, adds up all your numbers and divides by how many there are.
How to use the Average tool
- Enter Numbers (separated by commas or spaces).
- The result updates instantly as you type, or press Calculate.
- Use Try an example to see how it works, and Reset to start again.
Formula
Average = sum of the numbers ÷ how many numbers there are.
Worked example
With numbers (separated by commas or spaces) 12, 15, 9, 20, 4, the average (mean) comes to 12. Sum: 60; Count: 5; Minimum: 4; Maximum: 20.
Frequently asked questions
Is average the same as mean?
Yes. In everyday use, average means the arithmetic mean.
How do I enter the numbers?
Separate them with commas, spaces or new lines.
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Checked by Calcovate · Formula tested against worked examples · Updated 9 Nov 2026 · How we check our calculators.