Statistics Calculator
Calculate mean, median, mode, range and standard deviation from a list of numbers.
What is the Statistics Calculator?
Paste any list of numbers and this tool instantly calculates the core descriptive statistics used to summarize a dataset — no spreadsheet required.
What each value means
- Mean: the arithmetic average (sum ÷ count).
- Median: the middle value when sorted (average of the two middle values if the count is even).
- Mode: the most frequently occurring value(s).
- Range: the difference between the highest and lowest value.
- Standard deviation: how spread out the values are from the mean, calculated here as the sample standard deviation (dividing by n−1), the standard choice when your numbers are a sample rather than an entire population.
How to use it
- Paste or type your numbers, separated by commas, spaces or line breaks.
- Read the results instantly as you type.
Want the "why" behind this tool? Read Mean vs. Median: Why One Outlier Changes the Whole Story.