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Parquet to CSV

Open Apache Parquet files and export their rows to CSV for spreadsheets, sharing, and inspection. Process locally in your browser with HappyCSV.

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How to use this tool

Quick start

Built for inspecting or sharing a parquet dataset in spreadsheet-friendly form.

Everything runs in your browser, so you can test the workflow with sample data when available before using production files.

Output: A CSV containing the decoded Parquet rows.

  1. 1Upload a Parquet file.
  2. 2Review the decoded table.
  3. 3Download a CSV for inspection or handoff.

How to Parquet to CSV

  1. 1Upload a Parquet file.
  2. 2Review the decoded table.
  3. 3Download a CSV for inspection or handoff.

Why Use This Tool?

  • ✓Open Apache Parquet files and export their rows to CSV for spreadsheets, sharing, and inspection.
  • ✓A CSV containing the decoded Parquet rows.
  • ✓Files are processed locally in this browser.
  • ✓Keep the source file and review the result before importing it elsewhere.

Frequently Asked Questions

What does this tool support?

A CSV containing the decoded Parquet rows.

What are the processing limits?

Up to 100 MB per CSV, 20 MB per complex document; 250,000 rows, 1,000 columns, 2 million cells, and 128 MB output. Jobs stop after two minutes. Large files may need splitting.

Are my files uploaded?

No. File processing stays in your browser. Files are not automatically saved for the next visit.

Can I process multiple files?

This tool processes one file at a time.