Parquet to CSV Converter (Free • In-Browser)
Convert Parquet datasets to CSV in seconds with DuckDB running locally. Supports Snappy, Gzip, and Zstd without uploads — data stays private.
Advantages of CSV Format
CSV (Comma-Separated Values) is a simple, widely supported file format for storing tabular data. Here are some key benefits of converting Parquet to CSV:
- Universal compatibility with spreadsheet software and data analysis tools
- Human-readable format, making it easy to view and edit
- Smaller file size compared to some other formats, ideal for sharing
- Simple structure that's easy to parse and generate programmatically
How to convert Parquet to CSV
DuckDB runs inside your browser, so conversions stay fast and private.
- 1
Add your Parquet file
Drop a Parquet file or browse to load it locally — no uploads required.
- 2
Choose CSV options
Pick delimiter and output settings to match your spreadsheet or BI tool.
- 3
Convert in your browser
WASM DuckDB extracts rows with Snappy, Gzip, and Zstd support directly on your device.
- 4
Download the CSV
Export clean CSV instantly and keep working — data never leaves your machine.
Parquet to CSV FAQ
Is the Parquet to CSV converter private?
Yes. Conversion runs entirely in your browser using WebAssembly, so your Parquet files never touch our servers.
What is the maximum Parquet file size?
You can load files up to about 1 GB depending on available browser memory. Larger files may require trimming row groups first.
Does this converter work offline?
Once the page finishes loading you can go offline and keep converting — every operation happens locally.
How do I use the converter?
Drop a Parquet file, adjust CSV options if needed, click convert, then download the CSV — all in a few seconds.