Column statistics — sum, average, median, outliers
Paste a column of numbers and get instant statistics: count, sum, mean, median, min, max, standard deviation and outliers. It computes entirely in your browser (0 uploads, works offline).
How to use it
- Paste one value per line (or the first column of a CSV).
- The summary appears live, with any outliers flagged separately.
- Copy or Download the report.
FAQ
How do I get the average and median of a column for free?
Paste the values, one per line, and this page reports the sum, mean, median, range and standard deviation immediately — on your device with no upload. Currency symbols and thousands separators are ignored so pasted amounts just work.
How are outliers detected?
Values more than two standard deviations from the mean are flagged as outliers. They are worth a closer look but are not necessarily errors — the flag is a prompt, not a verdict.
Is my data uploaded anywhere?
No. The statistics are computed entirely in your browser and nothing is transmitted or stored, which you can confirm by turning off your Wi-Fi.
What happens with non-numeric values?
They are counted toward the total and the distinct count but skipped for the numeric measures, so a mixed column still gives you a useful summary.
Limits
Reads a single column; for multi-column analysis, split the columns first or paste them one at a time.
Related
The CSV cleaner tidies data first; the mock data generator creates sample columns to test with.
Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.