#230 · Table Analysis & Summaries Tool

Spreadsheet Quartile Report

Summarize numeric spreadsheet columns with count, minimum, quartiles, median, maximum, mean, and interquartile range.

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Choose exactly one file
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How to use this office tool

  1. Select the required spreadsheet file.
  2. Choose the worksheet and adjust the available options.
  3. Select Build quartile report and inspect the bounded preview.
  4. Download the newly generated result file.

What this tool does

Summarize numeric spreadsheet columns with count, minimum, quartiles, median, maximum, mean, and interquartile range.

Numeric values are sorted per column. Quartiles use linear interpolation at the 25th, 50th, and 75th percentiles.

Files remain on this device. Keep a backup of the source file and review generated reports before acting on them.

Supported formats

Reads XLSX, XLS, CSV, and TSV. Blank and nonnumeric cells are excluded; dates are not treated as numeric measurements.

FormatSupport
XLSX / XLSBrowser parsing with SheetJS CE
CSV / TSVDelimited table input
OutputNew XLSX, CSV, JSON, or YAML report

Tips for better results

  • Use a clear header row and unique column names.
  • Keep identifiers such as postal codes stored as text.
  • Check dates, large integers, and formula results in the preview.
  • For sensitive workbooks, close the tab after downloading the result.

FAQ

Does the quartile report upload my file?

No. The selected file is read and processed locally by JavaScript in your browser. This page does not send its contents to a processing server.

What happens to formulas and formatting in this quartile report?

Reads XLSX, XLS, CSV, and TSV. Blank and nonnumeric cells are excluded; dates are not treated as numeric measurements.

How large a file can I process with the quartile report?

The page enforces a 50 MB per-file and 1,000,000-cell safety limit. Practical capacity also depends on your device memory and browser.

Can I review the quartile report result before downloading?

Yes. A bounded preview and summary statistics appear after processing. The full newly generated result is available from the Download button.

Why might the quartile report result differ from Excel?

Browser libraries read stored workbook data but do not reproduce the complete Microsoft Excel calculation and rendering engine, VBA, Power Query, or every advanced workbook object.

Processing notes

AreaBehavior
PrivacyLocal browser processing
PreviewLimited rows and columns
SafetyCSV formula-prefix protection option

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