PARQUET to CSV
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convert parquet files to csv in your browser with batch processing, column selection, and zip export powered.

how to use

  • 1. drop or choose parquet files (up to 10 MB each).
  • 2. review detected columns and keep only what you need.
  • 3. download csvs individually or export all as a zip.
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parquet to csv converter - client only, multiple and free

Turn Parquet files into clean, shareable CSVs in seconds. This Parquet to CSV converter runs locally in your browser, supports multiple files, and keeps your data on your device.

What is Parquet

Parquet is a columnar storage format optimized for analytics. It stores data by column, which makes it efficient for compression and fast column-based queries.

What is CSV

CSV (Comma-Separated Values) is a plain-text table format. It is widely supported by spreadsheets, databases, and data tools, making it easy to share and inspect.

Why use this Parquet to CSV tool

  • Client-side conversion with DuckDB WASM for fast, accurate results.
  • Batch processing with per-file progress and a clear queue view.
  • Column selection so you only export the fields you need.
  • One-click ZIP export for multiple CSVs.

Use cases

  • Quick data inspection for analytics and BI workflows.
  • Sharing data with teams that prefer CSV.
  • Preparing datasets for spreadsheets and downstream tools.

FAQ

Is my data secure?

Yes. All data is processed locally in your browser and never sent to a server.

Is this an online Parquet to CSV converter?

Yes. It runs in the browser and processes files locally on your device.

Is there a file size limit?

Currently, each file is limited to 10 MB.

Can I choose specific columns?

Yes. Toggle any columns before exporting.

Do I need to create an account?

No. This tool is completely free.