Free · Multiple files · No signup
Convert CSV to Parquet
Turn large CSV files into compact Parquet files. Choose a batch to start converting immediately. Follow each file’s progress and download each result automatically.
Choose CSV files, get Parquet downloads
1. Choose files → 2. Conversion starts immediately → 3. Download or view your results.
Each file becomes a separate Parquet.
Checking conversion availability and current file limits...
Choosing files starts conversion immediately. Files are sent for processing and automatically deleted after 24 hours. No signup needed.
Three simple steps
How to convert CSV to Parquet
- 1. Choose your files
Add one CSV or a whole batch. The first row supplies the column names.
- 2. Convert together
Conversion starts as soon as you choose or drop files. Follow each file in the list, and use Add more files to keep adding files.
- 3. Save your results
Each file downloads when ready. Use View for a quick look or Download to save it again.
Ready for analysis
Keep your data, change the format
Create real Apache Parquet files for your data tools. CSV values stay as text, preserving identifiers, leading zeroes and dates as written.
Your files are sent for conversion and automatically deleted after 24 hours. No signup is needed.
Plain answers
CSV to Parquet questions
Can I convert multiple CSV files?+
Yes. Add as many files as you need. Each CSV becomes a separate Parquet file, with its own progress, View and Download buttons.
How large can my CSV files be?+
The current per-file limit appears beside the file picker. Choose your files and follow their progress in the list.
Will the download include every row?+
Yes. Downloads include the complete converted file. View shows a short preview to help you check the result.