Free statistics calculator
Paste a column of numbers and get the full descriptive summary — mean, median, mode, standard deviation, quartiles and more. Runs in your browser; your data never leaves your device.
How it works
No black box — here's exactly what the calculator does.
Paste any column of numbers — one per line or comma-separated. It parses everything finite and ignores the rest.
It works out the centre (mean, median, mode), the spread (range, variance, standard deviation) and the first and third quartiles with the interquartile range.
Variance and standard deviation use the sample formulas (divided by n − 1), which is the right choice when your numbers are a sample of a larger group.
Use it to sanity-check a dataset before deeper analysis — spotting an odd minimum, a wide range or a surprising median early saves time later.
FAQ
What does this statistics calculator compute?
It gives the full descriptive summary of a set of numbers: count, sum, mean, median, mode, minimum, maximum, range, sample variance, sample standard deviation, and the first and third quartiles with the interquartile range.
Does it use sample or population standard deviation?
Sample statistics — variance and standard deviation are divided by n − 1. This is the right choice when your numbers are a sample of a larger group, which is the most common case.
How is the median different from the mean?
The mean is the arithmetic average and is pulled around by extreme values. The median is the middle value when the numbers are sorted, so it is more robust to outliers and skew.
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