Average Calculator
Calculate the arithmetic mean, sum, and count for a list of numbers separated by commas or spaces.
Enter your details
Your result
Enter your details to calculate.
Worked example
Sample inputs
- Numbers
- 12, 18, 24, 30
Arithmetic mean: 21
- Sum: 84
- Number of values: 4
How this average calculator works
The arithmetic mean is the sum of all valid values divided by the number of values. Every value is weighted equally.
Frequently asked questions
Can I enter negative or decimal values?
Yes. The average calculator accepts positive, negative, and decimal numbers.
Are repeated values counted more than once?
Yes. Every entered value contributes once to the total and the count.