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Pivot Tool

Summarize and reshape CSV data with a client-side pivot table builder.

100% Secure - your files are processed in your browser and never sent to a server.
Drop your file hereor click to browseSupports CSV, TSV, or TXT files (.csv, .tsv, .txt) (Max 100MB)

Pivot tables summarize and reshape CSV data, allowing you to aggregate rows by category, calculate sums or averages, and restructure data for analysis. This tool provides a client-side pivot table builder that lets you select row groups, value columns, and aggregation functions (sum, count, average, min, max) without requiring Excel or a database. The pivot operation groups rows by one or more key columns and applies the selected aggregation function to the value columns. The result is a summary table that shows aggregated values for each group. You can configure the input delimiter, select which columns to use as groups and values, and choose the aggregation function. All processing happens in your browser using a custom aggregation engine, making it safe for pivoting sensitive financial, medical, or business data. The output is a clean CSV ready for reporting, charting, or further analysis.

How to use the Pivot CSV tool

  1. Load your CSV data: Drag and drop your CSV file, choose a file from your file explorer, or paste CSV data directly into the paste area.
  2. Configure input settings: Select the CSV delimiter to correctly parse your data.
  3. Define pivot fields: Enter the Row Grouping field (Y-axis), Column Grouping field (X-axis), and Aggregation Value Field to summarize.
  4. Choose aggregation metric: Select the calculation to apply: Sum, Count, Average, Minimum, or Maximum.
  5. Build and export: Click the "Build Pivot Table" button to generate the summary, then copy or download the result.

Frequently asked questions

What aggregation functions are available?
The tool supports sum, count, average (mean), minimum, and maximum aggregation functions. Select the function that matches your analysis needs.
Can I group by multiple columns?
Yes. You can select multiple columns as group keys. The pivot groups rows by the combination of all selected key columns.
Does the tool handle large CSV files for pivoting?
Yes. The pivot engine processes files up to 100 MB using streaming aggregation in a Web Worker, keeping the browser responsive.
Can I pivot without aggregation (just reshaping)?
The current version focuses on aggregation. For simple reshaping without aggregation, use the Transpose tool instead.
Is the pivoted output properly formatted CSV?
Yes. The output is RFC 4180 compliant CSV with proper headers, delimiters, and quoting. It is ready for import into spreadsheets or databases.

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