How Average Calculator Works
The mean is the sum of all numbers divided by how many there are. The median is the middle value once the numbers are sorted (or the average of the two middle values, for an even count). The mode is the most frequently occurring value or values. The range is the difference between the highest and lowest values.
How to Use This Tool
- Type or paste a list of numbers into the text box, separated by commas, spaces or line breaks.
- Select Calculate to see the mean, median, mode, range, sum and count.
- Edit the list and recalculate as needed — invalid entries are ignored automatically.
Example
For the list 4, 8, 6, 5, 3, 8: mean = 5.67, median = 5.5, mode = 8, range = 5, sum = 34, count = 6.
Helpful Tips
- You can mix separators freely — commas, spaces and new lines are all treated the same way.
- If every value appears exactly once (or all values appear equally often), the tool reports "No mode" rather than guessing.
- For a quick sanity check, the sum divided by the count should always equal the mean shown.
Frequently Asked Questions
What counts as a valid number in the list?
Any comma-, space-, or newline-separated token that parses as a number, including negatives and decimals. Non-numeric text is skipped.
What does it mean if there's no mode?
It means no value repeats more often than any other — for example, in a list where every number is different, there's no single most common value.
How is the median calculated for an even number of values?
The list is sorted, and the median is the average of the two middle values.
Can I paste numbers copied from a spreadsheet column?
Yes — spreadsheet columns are usually newline- or tab-separated, both of which this tool accepts.
This tool runs entirely in your browser. Your input is not uploaded to any server.