Free, privacy-first Excel to Parquet converter. Compress .xlsx files into columnar Parquet format directly in your browser. No uploads, no servers.
Parquet stores data by column, not by row. This means dramatically smaller files and faster reads for analytical queries compared to .xlsx.
Your Excel file stays on your device. No data is sent to any server. Everything runs locally in your browser using DuckDB WASM.
Drop any modern or legacy Excel file. ExploreMyData parses both formats and converts them to Parquet with correct column types.
Filter rows, rename columns, add calculations, or aggregate data before converting. Clean your data on the way to Parquet.
No sign-up, no trial, no watermarks. Convert as many Excel files to Parquet as you need, completely free.
Once loaded, ExploreMyData works without an internet connection. Convert Excel to Parquet anywhere, even without Wi-Fi.
Drag a .xlsx or .xls file onto the page. It loads instantly.
Filter rows, fix columns, or add calculations before export.
Click Export, choose Parquet, and download your compressed file.
Open exploremydata.com/app, drag your .xlsx file onto the page, then click Export and choose Parquet. The conversion runs entirely in your browser using DuckDB WASM.
Parquet files are significantly smaller than Excel files because of columnar compression. They also load faster in data tools like Pandas, Spark, and DuckDB, making them ideal for analytical workloads.
ExploreMyData reads the first sheet of your Excel file. If you need data from a different sheet, you can select it after loading the file.
Yes. You can filter rows, sort columns, remove columns, add calculated fields, and apply 32+ transformations before exporting to Parquet.
No sign-up, no upload, no tracking. Just drop your file and export.
Convert Excel to Parquet Free