Convert CSV files to DuckDB database format in your browser. Preserves types, fast re-import. No upload, no server, free forever.
DuckDB stores column types natively. No more date parsing issues or numbers read as strings. Types are auto-detected from your CSV and preserved in the database.
DuckDB files load orders of magnitude faster than CSV. Once converted, re-opening your data takes milliseconds instead of seconds.
The output is a standard DuckDB database file compatible with the DuckDB CLI, Python duckdb package, R duckdb, and any DuckDB client.
Clean columns, filter rows, fix types, and apply transformations before converting to DuckDB. Get exactly the data you need.
Your CSV file stays on your device. Nothing is sent to any server. All processing runs locally in your browser using DuckDB WASM.
No sign-up, no subscription, no limits. Convert as many CSV files to DuckDB as you need, completely free.
Drag a .csv file onto the page. Column types are auto-detected.
Clean columns, filter rows, or fix types before converting.
Click Export, choose DuckDB, and download your database file.
DuckDB stores data in a typed, columnar format that loads much faster than CSV. Column types are preserved natively, so you never lose date formats or have numbers read as strings. DuckDB files also support SQL queries directly.
Open exploremydata.com/app, drag your CSV file onto the page, then click Export and choose DuckDB. The conversion runs entirely in your browser using DuckDB WASM. No Python, no command line, no installation.
Yes. ExploreMyData produces standard DuckDB database files that you can open with the DuckDB CLI, Python duckdb package, R duckdb package, or any other DuckDB client.
Yes. Your CSV file never leaves your device. Everything runs locally in your browser using DuckDB WASM. No data is uploaded to any server, and there is no tracking or analytics on your files.
Typed columns, faster loading, SQL-ready. No sign-up required.
Convert CSV to DuckDB Free