Free online data analyzer — statistics, charts and correlation from CSV or Excel

Drop a CSV or Excel file, or paste a table, to get descriptive statistics (mean, median, standard deviation), distribution charts, Pearson correlation with regression line and p-value, and group comparisons. Nothing is uploaded.

We're not interested in your data. A platform built free from surveillance.

Drop a CSV or Excel file

Choose file

CSV · TSV · XLSX · TXT

…or paste a table (copy cells from Excel or Google Sheets)

Your data is read and analyzed in this browser only. Nothing is uploaded.

Summarise data for coursework

Each column is detected as numbers or text. Number columns get count, missing, mean, median, standard deviation, min and max in one table — copy it straight into Excel, Word or Google Docs.

Paste cells from Excel or Google Sheets, or try the sample data first.

Correlation and regression

Pick two number columns for a scatter plot with regression line, Pearson r, R² and a p-value, plus a plain-language reading of strength and significance at the 5% level.

Correlation isn't causation — in a report, say the variables are associated.

Compare groups

Group by a text column such as major, region or condition to compare the mean of a number column across groups.

Frequently asked questions

Which standard deviation is used?

The sample standard deviation (divides by n−1), the same as Excel's STDEV.S.

Which Excel sheet is read?

The first sheet. To analyse another one, copy its cells and paste them.

Is my data sent to a server?

No. Reading and calculating all happen in your browser, so survey data with personal details stays private.

Can numbers contain commas or %?

Yes. Values like 1,234, 12% or $3,000 are read as numbers.