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CSV Numeric Column Summary
Summarize selected CSV columns with exact medians, means and variances.
Pasted CSV, One UTF-8 CSV file
numeric-column-summary.json
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
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How to use this tool
- Paste CSV or select one UTF-8 file; the file takes precedence.
- Choose the delimiter and explicit one-based column positions, or automatic numeric eligibility.
- Choose whether empty numeric cells refuse or are omitted independently per column.
- Select Summarize numeric columns and download the complete JSON report.
Examples
Values1,2,3 have median2, mean2, population variance2/3 and sample variance1.
Limitations
- At most1MiB input,10000 data rows,100columns,100000cells including headers and20selected columns;20MiB report and30seconds.
- Numeric fields use an optional sign,1–18 total digits and up to6fraction digits. Spaces, exponents and coercions are refused.
- Empty means exactly zero-length. Singleton sample variance is null. No deviation, charts, outliers or source-table changes.
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