Find the mean, median, mode, sum and range of a list of numbers.
Calculated live in your browser.
How do you calculate mean, median, mode and range?
Mean = sum ÷ count. Median = the middle value when sorted (the average of the two middle values for an even count). Mode = the most frequent value. Range = max − min. The mean is sensitive to outliers while the median is more robust. For 10, 20, 30, 40 the mean is 25, the median is 25, and the range is 30.
Understanding your result
The mean is sensitive to outliers, while the median is more robust. The mode highlights the most common value, if any.
Formula and method
Mean = sum ÷ count. Median = the middle value when sorted (average of the two middle values for an even count). Mode = the most frequent value. Range = max − min.
Assumptions and limitations
This tool reports the mean, median, mode, sum and range from the list you enter; it treats every value as an ungrouped data point and ignores blanks or non-numeric text. A dataset can have no mode, one mode or several. The mean can be skewed by outliers, so pair it with the median for lists containing extreme values.
Worked example
For 10, 20, 30, 40 the mean is 25, the median is 25, the sum is 100 and the range is 30.
How to use this tool
- Type or paste your numbers separated by commas, spaces or new lines.
- The statistics update instantly.
Common mistakes to avoid
- Including stray text — only valid numbers are counted.
About the Average Calculator
Enter a list of numbers to get the mean, median, mode and other key statistics at once.
Who should use this tool
Students, teachers, analysts and anyone who needs to summarise a set of numbers without opening a spreadsheet.
Benefits
- Returns mean, median, mode, sum, count, min, max and range together.
- Accepts numbers separated by commas, spaces or new lines.
- Updates live and runs entirely in your browser.
Practical use cases
- Averaging test scores or grades.
- Summarising survey or measurement data quickly.
- Checking statistics homework with the working shown.
Frequently asked questions
What if there is no repeated value?
Then there is no single mode, and the tool reports that no value repeats.
Can a list of numbers have more than one mode?
Yes. When two or more values share the highest frequency, the data is bimodal or multimodal and every tied value is a mode. If all numbers appear equally often, there is effectively no mode. The tool reports each most-frequent value rather than choosing one arbitrarily.
Should I use the mean or the median?
The mean uses every value and suits roughly symmetric data, but a few very large or small numbers can pull it away from the centre. The median, the middle value once sorted, resists such outliers and better represents skewed data like incomes or house prices. Comparing both is often the clearest approach.