Parquet Dataset to CSV for Tools That Need It

Some tools, reviewers and teams cannot read Parquet. CSV works everywhere.

Open the Parquet to CSV converter, drop the file and download the CSV. Everything is read in your browser.

CSV is larger and loses the column types, so dates and numbers must be read again by whatever opens the file. Keep the Parquet as the source of truth and treat the CSV as a copy for sharing.

Check the row count against the Parquet file. For very large datasets, use large file mode or take a sample with the SQL tool and a LIMIT.

Everything runs in your browser and nothing is uploaded.

Open the Parquet to CSV converter

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How to use the Parquet to CSV converter: step by step

Open the Parquet to CSV converter.
Drop the file.
Check the row count.
Download CSV.

When to use the Parquet to CSV converter

Share a dataset with someone without Parquet tools
Inspect a sample in a spreadsheet
Load data into a tool that needs CSV
Check what is inside a file

Example

Input: A Parquet file with the columns id, name and age.

Output: id,name,age 1,Ada,36 2,Alan,41

Frequently asked questions

How do I convert Parquet to CSV?

Drop your Parquet file (or paste the data), check the options, click Convert and download the CSV result.

How big can a file be?

It depends on your device. A few hundred MB usually works.

Which conversions does the Format Converter support?

Any direction between JSON, CSV, Parquet and Excel (.xlsx), for one file or a whole folder. Nested JSON is flattened into columns such as address.city. For Excel, the first sheet is read; old .xls files are not supported.

Why did my number or date change after converting?

Types are detected from the values. Turn off "Detect types" to keep everything as text, which also keeps leading zeros in IDs and phone numbers.

Tip: Keep the Parquet as the source. The CSV is a copy and loses the types.