Average Calculator
Calculate mean, median, mode, range, and standard deviation from any list of numbers.
About this tool
The word average hides several different measures. The mean is the familiar sum divided by count, the median is the middle value and resists outliers, and the mode is the most frequent value. Which one is right depends on the question, and this calculator reports them all at once from a single pasted list.
It also reports the range, the sample standard deviation, and the sum and count, covering everything a typical statistics assignment or data sanity check needs. Numbers can be separated by spaces, commas, semicolons, or line breaks, so pasting a spreadsheet column works directly.
Frequently asked questions
When is the median better than the mean?
When the data has outliers or is skewed. One billionaire in a room moves the mean income enormously but barely touches the median.
Is the standard deviation here sample or population?
Sample standard deviation, dividing by n minus 1, which is the correct choice when your numbers are a sample rather than an entire population.