Average Calculator
Enter a list of numbers, separated by commas or line breaks, to instantly calculate their average (mean).
About this average calculator
A quick way to find the mean of any set of numbers, test scores, monthly expenses, survey ratings, or any dataset where you need a central value fast.
How average calculator works
The formula is: Average = Sum of all values ÷ Number of values. For example, the average of 4, 8, and 15 is (4 + 8 + 15) ÷ 3 = 9.
Common uses
- Finding the average of a set of test scores
- Calculating average monthly spending from several months of data
- Getting a quick mean from a small dataset
How to use this tool
- Enter your numbers, separated by commas or new lines.
- See the average and count instantly.
What to know before using it
This calculates the arithmetic mean. A dataset with extreme outliers may be better represented by the median, which this tool does not calculate.
Privacy and browser-first processing
This tool runs entirely in your browser using JavaScript. Nothing you enter is uploaded or stored.
Frequently asked questions
What is the formula for average?
Average = Sum of all the values ÷ Number of values.
Does this handle decimal numbers?
Yes, you can enter whole numbers or decimals, separated by commas or line breaks.